2022-09-06 12:48:16 +08:00
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/*
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* Copyright (c) 2021 - 2022 hpmicro
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Change Logs:
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* Date Author Notes
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* 2022-05-08 hpmicro the first version
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include <rthw.h>
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#include "board.h"
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#include "hpm_can_drv.h"
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#define CAN_SEND_WAIT_MS_MAX (1000U) /* CAN maximum wait time for transmission */
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#define CAN_SENDBOX_NUM (1U) /* CAN Hardware Transmission buffer number */
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#define CAN_FILTER_NUM_MAX (16U) /* CAN Hardware Filter number */
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#ifdef RT_USING_CAN
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typedef struct _hpm_can_struct
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{
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CAN_Type *can_base; /**< CAN Base address */
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const char *name; /**< CAN device name */
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int32_t irq_num; /**< CAN IRQ index */
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uint32_t fifo_index; /**< FIFO index, it is a fake value to satisfy the driver framework */
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can_config_t can_config; /**< CAN configuration for IP */
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struct rt_can_device can_dev; /**< CAN device configuration in rt-thread */
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uint32_t filter_num; /**< Filter number */
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can_filter_config_t filter_list[CAN_FILTER_NUM_MAX]; /**< Filter list */
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} hpm_can_t;
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/**
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* @brief Configure CAN controller
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* @param [in/out] can CAN device pointer
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* @param [in] cfg CAN configuration pointer
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* @retval RT_EOK for valid configuration
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* @retval -RT_ERROR for invalid configuration
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*/
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static rt_err_t hpm_can_configure(struct rt_can_device *can, struct can_configure *cfg);
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/**
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* @brief Control/Get CAN state
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* including:interrupt, mode, priority, baudrate, filter, status
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* @param [in/out] can CAN device pointer
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* @param [in] cmd Control command
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* @param [in/out] arg Argument pointer
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* @retval RT_EOK for valid control command and arg
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* @retval -RT_ERROR for invalid control command or arg
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*/
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static rt_err_t hpm_can_control(struct rt_can_device *can, int cmd, void *arg);
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/**
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* @brief Send out CAN message
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* @param [in] can CAN device pointer
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* @param [in] buf CAN message buffer
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* @param [in] boxno Mailbox number, it is not used in this porting
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* @retval RT_EOK No error
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* @retval -RT_ETIMEOUT timeout happened
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* @retval -RT_EFULL Transmission buffer is full
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*/
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static int hpm_can_sendmsg(struct rt_can_device *can, const void *buf, rt_uint32_t boxno);
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/**
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* @brief Receive message from CAN
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* @param [in] can CAN device pointer
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* @param [out] buf CAN receive buffer
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* @param [in] boxno Mailbox Number, it is not used in this porting
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* @retval RT_EOK no error
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* @retval -RT_ERROR Error happened during reading receive FIFO
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* @retval -RT_EMPTY no data in receive FIFO
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*/
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static int hpm_can_recvmsg(struct rt_can_device *can, void *buf, rt_uint32_t boxno);
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/**
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* @brief Common Interrupt Service routine
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* @param [in] hpm_can HPM CAN pointer
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*/
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static void hpm_can_isr(hpm_can_t *hpm_can);
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/**
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* @brief Decode data bytes from DLC
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* @param [in] dlc Data Length Code
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* @return decoded data bytes
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*/
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static uint8_t can_get_data_bytes_from_dlc(uint32_t dlc);
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#if defined(HPM_CAN0_BASE) && defined(BSP_USING_CAN0)
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static hpm_can_t dev_can0 =
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{
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.can_base = HPM_CAN0,
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.name = "can0",
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.irq_num = IRQn_CAN0,
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.fifo_index = 0,
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};
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void can0_isr(void)
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{
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hpm_can_isr(&dev_can0);
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}
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SDK_DECLARE_EXT_ISR_M(IRQn_CAN0, can0_isr);
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#endif
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#if defined(HPM_CAN1_BASE) && defined(BSP_USING_CAN1)
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static hpm_can_t dev_can1 =
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{
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.can_base = HPM_CAN1,
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.name = "can1",
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.irq_num = IRQn_CAN1,
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.fifo_index = 1,
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};
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void can1_isr(void)
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{
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hpm_can_isr(&dev_can1);
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}
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SDK_DECLARE_EXT_ISR_M(IRQn_CAN1, can1_isr);
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#endif
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#if defined(HPM_CAN2_BASE) && defined(BSP_USING_CAN2)
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static hpm_can_t dev_can2 =
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{
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.can_base = HPM_CAN2,
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.name = "can2",
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.irq_num = IRQn_CAN2,
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.fifo_index = 2,
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};
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void can2_isr(void)
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{
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hpm_can_isr(&dev_can2);
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}
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SDK_DECLARE_EXT_ISR_M(IRQn_CAN2, can2_isr);
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#endif
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#if defined(HPM_CAN3_BASE) && defined(BSP_USING_CAN3)
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static hpm_can_t dev_can3 =
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{
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.can_base = HPM_CAN3,
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.name = "can3",
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.irq_num = IRQn_CAN3,
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.fifo_index = 3,
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};
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void can3_isr(void)
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{
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hpm_can_isr(&dev_can3);
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}
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SDK_DECLARE_EXT_ISR_M(IRQn_CAN3, can3_isr);
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#endif
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static hpm_can_t *hpm_cans[] = {
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#if defined(HPM_CAN0_BASE) && defined(BSP_USING_CAN0)
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&dev_can0,
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#endif
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#if defined(HPM_CAN1_BASE) && defined(BSP_USING_CAN1)
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&dev_can1,
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#endif
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#if defined(HPM_CAN2_BASE) && defined(BSP_USING_CAN2)
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&dev_can2,
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#endif
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#if defined(HPM_CAN3_BASE) && defined(BSP_USING_CAN3)
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&dev_can3,
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#endif
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};
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static const struct rt_can_ops hpm_can_ops = {
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.configure = hpm_can_configure,
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.control = hpm_can_control,
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.sendmsg = hpm_can_sendmsg,
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.recvmsg = hpm_can_recvmsg,
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};
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static void hpm_can_isr(hpm_can_t *hpm_can)
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{
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uint8_t tx_rx_flags = can_get_tx_rx_flags(hpm_can->can_base);
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uint8_t error_flags = can_get_error_interrupt_flags(hpm_can->can_base);
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/* High-priority message transmission done */
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if ((tx_rx_flags & CAN_EVENT_TX_PRIMARY_BUF) != 0U)
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{
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rt_hw_can_isr(&hpm_can->can_dev, RT_CAN_EVENT_TX_DONE | (0UL << 8));
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}
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/* Normal priority message transmission done */
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if ((tx_rx_flags & CAN_EVENT_TX_SECONDARY_BUF) != 0U)
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{
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rt_hw_can_isr(&hpm_can->can_dev, RT_CAN_EVENT_TX_DONE | (0UL << 8));
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}
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/* Data available in FIFO */
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if ((tx_rx_flags & CAN_EVENT_RECEIVE) == CAN_EVENT_RECEIVE)
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{
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rt_hw_can_isr(&hpm_can->can_dev, RT_CAN_EVENT_RX_IND | (hpm_can->fifo_index << 8));
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}
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/* RX FIFO overflow */
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if ((tx_rx_flags & CAN_EVENT_RX_BUF_OVERRUN) != 0U)
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{
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rt_hw_can_isr(&hpm_can->can_dev, RT_CAN_EVENT_RXOF_IND | (hpm_can->fifo_index << 8));
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}
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/* Error happened on CAN Bus */
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if (((tx_rx_flags & CAN_EVENT_ERROR) != 0U) || (error_flags != 0U))
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{
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uint8_t err_kind = can_get_last_error_kind(hpm_can->can_base);
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switch(err_kind)
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{
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case CAN_KIND_OF_ERROR_ACK_ERROR:
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hpm_can->can_dev.status.ackerrcnt++;
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break;
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case CAN_KIND_OF_ERROR_BIT_ERROR:
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hpm_can->can_dev.status.biterrcnt++;
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break;
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case CAN_KIND_OF_ERROR_CRC_ERROR:
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hpm_can->can_dev.status.crcerrcnt++;
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break;
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case CAN_KIND_OF_ERROR_FORM_ERROR:
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hpm_can->can_dev.status.formaterrcnt++;
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break;
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case CAN_KIND_OF_ERROR_STUFF_ERROR:
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hpm_can->can_dev.status.bitpaderrcnt++;
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break;
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}
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hpm_can->can_dev.status.rcverrcnt = can_get_receive_error_count(hpm_can->can_base);
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hpm_can->can_dev.status.snderrcnt = can_get_transmit_error_count(hpm_can->can_base);
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hpm_can->can_dev.status.lasterrtype = can_get_last_error_kind(hpm_can->can_base);
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hpm_can->can_dev.status.errcode = 0;
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if ((error_flags & CAN_ERROR_WARNING_LIMIT_FLAG) != 0U)
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{
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hpm_can->can_dev.status.errcode |= ERRWARNING;
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}
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if ((error_flags & CAN_ERROR_PASSIVE_INT_FLAG) != 0U)
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{
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hpm_can->can_dev.status.errcode |= ERRPASSIVE;
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}
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if (can_is_in_bus_off_mode(hpm_can->can_base))
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{
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hpm_can->can_dev.status.errcode |= BUSOFF;
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}
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}
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can_clear_tx_rx_flags(hpm_can->can_base, tx_rx_flags);
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can_clear_error_interrupt_flags(hpm_can->can_base, error_flags);
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}
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static rt_err_t hpm_can_configure(struct rt_can_device *can, struct can_configure *cfg)
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{
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RT_ASSERT(can);
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RT_ASSERT(cfg);
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hpm_can_t *drv_can = (hpm_can_t*) can->parent.user_data;
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RT_ASSERT(drv_can);
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#ifdef RT_CAN_USING_CANFD
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drv_can->can_config.enable_canfd = (cfg->enable_canfd != 0) ? true : false;
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if (cfg->use_bit_timing != 0U)
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{
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drv_can->can_config.use_lowlevel_timing_setting = true;
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drv_can->can_config.can_timing.prescaler = cfg->can_timing.prescaler;
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drv_can->can_config.can_timing.num_seg1 = cfg->can_timing.num_seg1;
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drv_can->can_config.can_timing.num_seg2 = cfg->can_timing.num_seg2;
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drv_can->can_config.can_timing.num_sjw = cfg->can_timing.num_sjw;
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drv_can->can_config.canfd_timing.prescaler = cfg->canfd_timing.prescaler;
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drv_can->can_config.canfd_timing.num_seg1 = cfg->canfd_timing.num_seg1;
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drv_can->can_config.canfd_timing.num_seg2 = cfg->canfd_timing.num_seg2;
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drv_can->can_config.canfd_timing.num_sjw = cfg->canfd_timing.num_sjw;
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}
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else
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#endif
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{
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drv_can->can_config.use_lowlevel_timing_setting = false;
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drv_can->can_config.baudrate = cfg->baud_rate;
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#ifdef RT_CAN_USING_CANFD
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drv_can->can_config.baudrate_fd = cfg->baud_rate_fd;
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#endif
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}
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switch (cfg->mode)
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{
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case RT_CAN_MODE_NORMAL:
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drv_can->can_config.mode = can_mode_normal;
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break;
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case RT_CAN_MODE_LISTEN:
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drv_can->can_config.mode = can_mode_listen_only;
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break;
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case RT_CAN_MODE_LOOPBACK:
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drv_can->can_config.mode = can_mode_loopback_internal;
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break;
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default:
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return -RT_ERROR;
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break;
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}
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drv_can->can_config.enable_tx_buffer_priority_mode = (cfg->privmode != 0U) ? true : false;
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init_can_pins(drv_can->can_base);
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|
uint32_t can_clk = board_init_can_clock(drv_can->can_base);
|
|
|
|
|
drv_can->can_config.filter_list_num = drv_can->filter_num;
|
|
|
|
|
drv_can->can_config.filter_list = &drv_can->filter_list[0];
|
|
|
|
|
hpm_stat_t status = can_init(drv_can->can_base, &drv_can->can_config, can_clk);
|
|
|
|
|
if (status != status_success)
|
|
|
|
|
{
|
|
|
|
|
return -RT_ERROR;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return RT_EOK;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static rt_err_t hpm_can_control(struct rt_can_device *can, int cmd, void *arg)
|
|
|
|
|
{
|
|
|
|
|
RT_ASSERT(can);
|
|
|
|
|
|
|
|
|
|
hpm_can_t *drv_can = (hpm_can_t*) can->parent.user_data;
|
|
|
|
|
RT_ASSERT(drv_can);
|
|
|
|
|
|
|
|
|
|
uint32_t arg_val;
|
|
|
|
|
rt_err_t err = RT_EOK;
|
|
|
|
|
|
|
|
|
|
uint32_t temp;
|
|
|
|
|
|
|
|
|
|
switch (cmd)
|
|
|
|
|
{
|
|
|
|
|
case RT_DEVICE_CTRL_CLR_INT:
|
|
|
|
|
arg_val = (uint32_t) arg;
|
|
|
|
|
intc_m_disable_irq(drv_can->irq_num);
|
|
|
|
|
if (arg_val == RT_DEVICE_FLAG_INT_RX)
|
|
|
|
|
{
|
|
|
|
|
uint8_t irq_txrx_mask = CAN_EVENT_RECEIVE | CAN_EVENT_RX_BUF_ALMOST_FULL | CAN_EVENT_RX_BUF_FULL | CAN_EVENT_RX_BUF_OVERRUN;
|
|
|
|
|
drv_can->can_config.irq_txrx_enable_mask &= (uint8_t)~irq_txrx_mask;
|
|
|
|
|
can_disable_tx_rx_irq(drv_can->can_base, irq_txrx_mask);
|
|
|
|
|
}
|
|
|
|
|
else if (arg_val == RT_DEVICE_FLAG_INT_TX)
|
|
|
|
|
{
|
|
|
|
|
uint8_t irq_txrx_mask = CAN_EVENT_TX_PRIMARY_BUF | CAN_EVENT_TX_SECONDARY_BUF;
|
|
|
|
|
drv_can->can_config.irq_txrx_enable_mask &= (uint8_t)~irq_txrx_mask;
|
|
|
|
|
can_disable_tx_rx_irq(drv_can->can_base, irq_txrx_mask);
|
|
|
|
|
}
|
|
|
|
|
else if (arg_val == RT_DEVICE_CAN_INT_ERR)
|
|
|
|
|
{
|
|
|
|
|
uint8_t irq_txrx_mask = CAN_EVENT_ERROR;
|
|
|
|
|
uint8_t irq_error_mask = CAN_ERROR_ARBITRAITION_LOST_INT_ENABLE | CAN_ERROR_PASSIVE_INT_ENABLE | CAN_ERROR_BUS_ERROR_INT_ENABLE;
|
|
|
|
|
drv_can->can_config.irq_txrx_enable_mask &= (uint8_t)~irq_txrx_mask;
|
|
|
|
|
drv_can->can_config.irq_error_enable_mask &= (uint8_t)~irq_error_mask;
|
|
|
|
|
can_disable_tx_rx_irq(drv_can->can_base, irq_txrx_mask);
|
|
|
|
|
can_disable_error_irq(drv_can->can_base, irq_error_mask);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
err = -RT_ERROR;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case RT_DEVICE_CTRL_SET_INT:
|
|
|
|
|
arg_val = (uint32_t) arg;
|
|
|
|
|
if (arg_val == RT_DEVICE_FLAG_INT_RX)
|
|
|
|
|
{
|
|
|
|
|
uint8_t irq_txrx_mask = CAN_EVENT_RECEIVE | CAN_EVENT_RX_BUF_ALMOST_FULL | CAN_EVENT_RX_BUF_FULL | CAN_EVENT_RX_BUF_OVERRUN;
|
|
|
|
|
drv_can->can_config.irq_txrx_enable_mask |= irq_txrx_mask;
|
|
|
|
|
can_enable_tx_rx_irq(drv_can->can_base, irq_txrx_mask);
|
|
|
|
|
intc_m_enable_irq_with_priority(drv_can->irq_num, 1);
|
|
|
|
|
}
|
|
|
|
|
else if (arg_val == RT_DEVICE_FLAG_INT_TX)
|
|
|
|
|
{
|
|
|
|
|
uint8_t irq_txrx_mask = CAN_EVENT_TX_PRIMARY_BUF | CAN_EVENT_TX_SECONDARY_BUF;
|
|
|
|
|
drv_can->can_config.irq_txrx_enable_mask |= irq_txrx_mask;
|
|
|
|
|
can_enable_tx_rx_irq(drv_can->can_base, irq_txrx_mask);
|
|
|
|
|
intc_m_enable_irq_with_priority(drv_can->irq_num, 1);
|
|
|
|
|
}
|
|
|
|
|
else if (arg_val == RT_DEVICE_CAN_INT_ERR)
|
|
|
|
|
{
|
|
|
|
|
uint8_t irq_txrx_mask = CAN_EVENT_ERROR;
|
|
|
|
|
uint8_t irq_error_mask = CAN_ERROR_ARBITRAITION_LOST_INT_ENABLE | CAN_ERROR_PASSIVE_INT_ENABLE | CAN_ERROR_BUS_ERROR_INT_ENABLE;
|
|
|
|
|
drv_can->can_config.irq_txrx_enable_mask |= irq_txrx_mask;
|
|
|
|
|
drv_can->can_config.irq_error_enable_mask |= irq_error_mask;
|
|
|
|
|
can_enable_tx_rx_irq(drv_can->can_base, irq_txrx_mask);
|
|
|
|
|
can_enable_error_irq(drv_can->can_base, irq_error_mask);
|
|
|
|
|
intc_m_enable_irq_with_priority(drv_can->irq_num, 1);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
err = -RT_ERROR;
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case RT_CAN_CMD_SET_FILTER:
|
|
|
|
|
{
|
|
|
|
|
/* Convert the RT-Thread Filter format to the filter format supported by HPM CAN */
|
|
|
|
|
struct rt_can_filter_config *filter = (struct rt_can_filter_config*)arg;
|
|
|
|
|
if (filter != NULL)
|
|
|
|
|
{
|
|
|
|
|
drv_can->filter_num = filter->count;
|
|
|
|
|
RT_ASSERT(filter->count <= CAN_FILTER_NUM_MAX);
|
|
|
|
|
for (uint32_t i=0; i<filter->count; i++)
|
|
|
|
|
{
|
2022-11-22 10:45:51 +08:00
|
|
|
drv_can->filter_list[i].index = (filter->items[i].hdr_bank == -1) ? i : filter->items[i].hdr_bank;
|
2022-09-06 12:48:16 +08:00
|
|
|
drv_can->filter_list[i].enable = (filter->actived != 0U) ? true : false;
|
|
|
|
|
drv_can->filter_list[i].code = filter->items[i].id;
|
|
|
|
|
drv_can->filter_list[i].id_mode = (filter->items[i].ide != 0U) ? can_filter_id_mode_extended_frames : can_filter_id_mode_standard_frames;
|
|
|
|
|
drv_can->filter_list[i].mask = (~filter->items[i].mask) & ~(7UL <<29);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
drv_can->filter_num = 0;
|
|
|
|
|
}
|
|
|
|
|
err = hpm_can_configure(can, &drv_can->can_dev.config);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case RT_CAN_CMD_SET_MODE:
|
|
|
|
|
arg_val = (uint32_t) arg;
|
|
|
|
|
if ((arg_val != RT_CAN_MODE_NORMAL) && (arg_val != RT_CAN_MODE_LISTEN) && (arg_val != RT_CAN_MODE_LOOPBACK))
|
|
|
|
|
{
|
|
|
|
|
err = -RT_ERROR;
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
if (arg_val != drv_can->can_dev.config.mode)
|
|
|
|
|
{
|
|
|
|
|
drv_can->can_dev.config.mode = arg_val;
|
|
|
|
|
err = hpm_can_configure(can, &drv_can->can_dev.config);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
break;
|
|
|
|
|
case RT_CAN_CMD_SET_BAUD:
|
|
|
|
|
arg_val = (uint32_t) arg;
|
|
|
|
|
if (arg_val != drv_can->can_dev.config.baud_rate)
|
|
|
|
|
{
|
|
|
|
|
drv_can->can_dev.config.baud_rate = arg_val;
|
|
|
|
|
}
|
|
|
|
|
err = hpm_can_configure(can, &drv_can->can_dev.config);
|
|
|
|
|
break;
|
|
|
|
|
#ifdef RT_CAN_USING_CANFD
|
|
|
|
|
case RT_CAN_CMD_SET_CANFD:
|
|
|
|
|
arg_val = (uint32_t) arg;
|
|
|
|
|
if (arg_val != drv_can->can_dev.config.enable_canfd)
|
|
|
|
|
{
|
|
|
|
|
drv_can->can_dev.config.enable_canfd = arg_val;
|
|
|
|
|
err = hpm_can_configure(can, &drv_can->can_dev.config);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case RT_CAN_CMD_SET_BAUD_FD:
|
|
|
|
|
arg_val = (uint32_t) arg;
|
|
|
|
|
if (arg_val != drv_can->can_dev.config.baud_rate_fd)
|
|
|
|
|
{
|
|
|
|
|
drv_can->can_dev.config.baud_rate_fd = arg_val;
|
|
|
|
|
err = hpm_can_configure(can, &drv_can->can_dev.config);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case RT_CAN_CMD_SET_BITTIMING:
|
|
|
|
|
{
|
|
|
|
|
struct rt_can_bit_timing_config *timing_configs = (struct rt_can_bit_timing_config*)arg;
|
|
|
|
|
if ((timing_configs == RT_NULL) || (timing_configs->count < 1) || (timing_configs->count > 2))
|
|
|
|
|
{
|
|
|
|
|
return -RT_ERROR;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (timing_configs->count != 0U)
|
|
|
|
|
{
|
|
|
|
|
drv_can->can_dev.config.can_timing = timing_configs->items[0];
|
|
|
|
|
}
|
|
|
|
|
if (timing_configs->count == 2)
|
|
|
|
|
{
|
|
|
|
|
drv_can->can_dev.config.canfd_timing = timing_configs->items[1];
|
|
|
|
|
}
|
|
|
|
|
err = hpm_can_configure(can, &drv_can->can_dev.config);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
#endif
|
|
|
|
|
case RT_CAN_CMD_SET_PRIV:
|
|
|
|
|
arg_val = (uint32_t)arg;
|
|
|
|
|
if ((arg_val != RT_CAN_MODE_PRIV) && (arg_val != RT_CAN_MODE_NOPRIV))
|
|
|
|
|
{
|
|
|
|
|
return -RT_ERROR;
|
|
|
|
|
}
|
|
|
|
|
if (arg_val != drv_can->can_dev.config.privmode)
|
|
|
|
|
{
|
|
|
|
|
drv_can->can_dev.config.privmode = arg_val;
|
|
|
|
|
err = hpm_can_configure(can, &drv_can->can_dev.config);
|
|
|
|
|
}
|
|
|
|
|
break;
|
|
|
|
|
case RT_CAN_CMD_GET_STATUS:
|
|
|
|
|
drv_can->can_dev.status.rcverrcnt = can_get_receive_error_count(drv_can->can_base);
|
|
|
|
|
drv_can->can_dev.status.snderrcnt = can_get_transmit_error_count(drv_can->can_base);
|
|
|
|
|
drv_can->can_dev.status.lasterrtype = can_get_last_error_kind(drv_can->can_base);
|
|
|
|
|
temp = can_get_error_interrupt_flags(drv_can->can_base);
|
|
|
|
|
drv_can->can_dev.status.errcode = 0;
|
|
|
|
|
if ((temp & CAN_ERROR_WARNING_LIMIT_FLAG) != 0U)
|
|
|
|
|
{
|
|
|
|
|
drv_can->can_dev.status.errcode |= ERRWARNING;
|
|
|
|
|
}
|
|
|
|
|
if ((temp & CAN_ERROR_PASSIVE_INT_FLAG) != 0U)
|
|
|
|
|
{
|
|
|
|
|
drv_can->can_dev.status.errcode |= ERRPASSIVE;
|
|
|
|
|
}
|
|
|
|
|
if (can_is_in_bus_off_mode(drv_can->can_base))
|
|
|
|
|
{
|
|
|
|
|
drv_can->can_dev.status.errcode |= BUSOFF;
|
|
|
|
|
}
|
|
|
|
|
rt_memcpy(arg, &drv_can->can_dev.status, sizeof(drv_can->can_dev.status));
|
|
|
|
|
break;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static int hpm_can_sendmsg(struct rt_can_device *can, const void *buf, rt_uint32_t boxno)
|
|
|
|
|
{
|
|
|
|
|
RT_ASSERT(can);
|
|
|
|
|
|
|
|
|
|
hpm_can_t *drv_can = (hpm_can_t*) can->parent.user_data;
|
|
|
|
|
RT_ASSERT(drv_can);
|
|
|
|
|
|
|
|
|
|
struct rt_can_msg *can_msg = (struct rt_can_msg *) buf;
|
|
|
|
|
|
|
|
|
|
can_transmit_buf_t tx_buf = { 0 };
|
|
|
|
|
tx_buf.id = can_msg->id;
|
|
|
|
|
if (can_msg->ide == RT_CAN_STDID)
|
|
|
|
|
{
|
|
|
|
|
tx_buf.extend_id = false;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
tx_buf.extend_id = true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (can_msg->rtr == RT_CAN_DTR)
|
|
|
|
|
{
|
|
|
|
|
tx_buf.remote_frame = false;
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
tx_buf.remote_frame = true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
#ifdef RT_CAN_USING_CANFD
|
|
|
|
|
if (can_msg->fd_frame != 0)
|
|
|
|
|
{
|
|
|
|
|
tx_buf.canfd_frame = 1;
|
|
|
|
|
tx_buf.bitrate_switch = 1;
|
|
|
|
|
|
|
|
|
|
RT_ASSERT(can_msg->len <= 15);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
#endif
|
|
|
|
|
{
|
|
|
|
|
RT_ASSERT(can_msg->len <= 8);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
uint32_t msg_len = can_get_data_bytes_from_dlc(can_msg->len);
|
|
|
|
|
for (uint32_t i = 0; i < msg_len; i++)
|
|
|
|
|
{
|
|
|
|
|
tx_buf.data[i] = can_msg->data[i];
|
|
|
|
|
}
|
|
|
|
|
tx_buf.dlc = can_msg->len;
|
|
|
|
|
|
|
|
|
|
uint32_t delay_cnt = 0;
|
|
|
|
|
|
|
|
|
|
if (can_msg->priv != 0U)
|
|
|
|
|
{
|
|
|
|
|
while (can_is_primary_transmit_buffer_full(drv_can->can_base))
|
|
|
|
|
{
|
|
|
|
|
rt_thread_mdelay(1);
|
|
|
|
|
delay_cnt++;
|
|
|
|
|
if (delay_cnt >= CAN_SEND_WAIT_MS_MAX)
|
|
|
|
|
{
|
|
|
|
|
return -RT_ETIMEOUT;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
hpm_stat_t status = can_send_message_nonblocking(drv_can->can_base, &tx_buf);
|
|
|
|
|
if (status != status_success)
|
|
|
|
|
{
|
|
|
|
|
return -RT_EFULL;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
while (can_is_secondary_transmit_buffer_full(drv_can->can_base))
|
|
|
|
|
{
|
|
|
|
|
rt_thread_mdelay(1);
|
|
|
|
|
delay_cnt++;
|
|
|
|
|
if (delay_cnt >= CAN_SEND_WAIT_MS_MAX)
|
|
|
|
|
{
|
|
|
|
|
return -RT_ETIMEOUT;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
hpm_stat_t status = can_send_message_nonblocking(drv_can->can_base, &tx_buf);
|
|
|
|
|
if (status != status_success)
|
|
|
|
|
{
|
|
|
|
|
return -RT_EFULL;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return RT_EOK;
|
|
|
|
|
}
|
|
|
|
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static int hpm_can_recvmsg(struct rt_can_device *can, void *buf, rt_uint32_t boxno)
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{
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RT_ASSERT(can);
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hpm_can_t *drv_can = (hpm_can_t*) can->parent.user_data;
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RT_ASSERT(drv_can);
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rt_can_msg_t can_msg = (rt_can_msg_t)buf;
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if (can_is_data_available_in_receive_buffer(drv_can->can_base)) {
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can_receive_buf_t rx_buf;
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hpm_stat_t status = can_read_received_message(drv_can->can_base, &rx_buf);
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if (status != status_success) {
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return -RT_ERROR;
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}
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if (rx_buf.extend_id != 0) {
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can_msg->ide = RT_CAN_EXTID;
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}
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else {
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can_msg->ide = RT_CAN_STDID;
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}
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can_msg->id = rx_buf.id;
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if (rx_buf.remote_frame != 0) {
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can_msg->rtr = RT_CAN_RTR;
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}
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else {
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can_msg->rtr = RT_CAN_DTR;
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}
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can_msg->len = rx_buf.dlc;
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uint32_t msg_len = can_get_data_bytes_from_dlc(can_msg->len);
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for(uint32_t i = 0; i < msg_len; i++) {
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can_msg->data[i] = rx_buf.data[i];
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}
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}
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else {
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return -RT_EEMPTY;
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}
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return RT_EOK;
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}
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static uint8_t can_get_data_bytes_from_dlc(uint32_t dlc)
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{
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uint32_t data_bytes = 0;
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dlc &= 0xFU;
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if (dlc <= 8U) {
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data_bytes = dlc;
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} else {
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switch (dlc) {
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case can_payload_size_12:
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data_bytes = 12U;
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break;
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case can_payload_size_16:
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data_bytes = 16U;
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break;
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case can_payload_size_20:
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data_bytes = 20U;
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break;
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case can_payload_size_24:
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data_bytes = 24U;
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break;
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case can_payload_size_32:
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data_bytes = 32U;
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break;
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case can_payload_size_48:
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data_bytes = 48U;
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break;
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case can_payload_size_64:
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data_bytes = 64U;
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break;
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default:
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/* Code should never touch here */
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break;
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}
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}
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return data_bytes;
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}
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int rt_hw_can_init(void)
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{
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struct can_configure config = CANDEFAULTCONFIG;
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config.privmode = RT_CAN_MODE_NOPRIV;
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config.sndboxnumber = CAN_SENDBOX_NUM;
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config.ticks = 50;
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for (uint32_t i = 0; i < ARRAY_SIZE(hpm_cans); i++)
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{
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hpm_cans[i]->can_dev.config = config;
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hpm_cans[i]->filter_num = 0;
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can_get_default_config(&hpm_cans[i]->can_config);
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rt_hw_can_register(&hpm_cans[i]->can_dev, hpm_cans[i]->name, &hpm_can_ops, hpm_cans[i]);
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}
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return RT_EOK;
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}
|
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|
|
INIT_BOARD_EXPORT(rt_hw_can_init);
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#endif
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