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rt-thread-official/bsp/essemi/es32f369x/drivers/drv_uart.c

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/*
* Copyright (C) 2018 Shanghai Eastsoft Microelectronics Co., Ltd.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Change Logs:
* Date Author Notes
* 2020-01-14 wangyq the first version
* 2021-04-20 liuhy the second version
* 2021-09-17 shiwa add uart dma
*/
#include <rthw.h>
#include <rtthread.h>
#include <rtdevice.h>
#include "board.h"
#include "es_conf_info_uart.h"
#include "es_conf_info_dma.h"
#ifdef RT_USING_SERIAL
#define UART_DMA_BUF_SECTIONS 4
/*
* To use UART DMA,
* 1. select 'DMA->DMA0'
* 2. select 'UART->UARTx->DMATX(or DMARX)'
* 3. add RT_DEVICE_FLAG_DMA_TX(or RT_DEVICE_FLAG_DMA_RX) flag when open serial device
*/
#ifdef BSP_UART0_TX_USING_DMA
#define UART0_DMATX_CHANNEL ES_UART0_DMATX_CHANNEL
#define UART0_DMATX_FLAG RT_DEVICE_FLAG_DMA_TX
#else
#define UART0_DMATX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART0_DMATX_FLAG 0
#endif
#ifdef BSP_UART0_RX_USING_DMA
#define UART0_DMARX_CHANNEL ES_UART0_DMARX_CHANNEL
#define UART0_DMARX_FLAG RT_DEVICE_FLAG_DMA_RX
#else
#define UART0_DMARX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART0_DMARX_FLAG 0
#endif
#ifdef BSP_UART1_TX_USING_DMA
#define UART1_DMATX_CHANNEL ES_UART1_DMATX_CHANNEL
#define UART1_DMATX_FLAG RT_DEVICE_FLAG_DMA_TX
#else
#define UART1_DMATX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART1_DMATX_FLAG 0
#endif
#ifdef BSP_UART1_RX_USING_DMA
#define UART1_DMARX_CHANNEL ES_UART1_DMARX_CHANNEL
#define UART1_DMARX_FLAG RT_DEVICE_FLAG_DMA_RX
#else
#define UART1_DMARX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART1_DMARX_FLAG 0
#endif
#ifdef BSP_UART2_TX_USING_DMA
#define UART2_DMATX_CHANNEL ES_UART2_DMATX_CHANNEL
#define UART2_DMATX_FLAG RT_DEVICE_FLAG_DMA_TX
#else
#define UART2_DMATX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART2_DMATX_FLAG 0
#endif
#ifdef BSP_UART2_RX_USING_DMA
#define UART2_DMARX_CHANNEL ES_UART2_DMARX_CHANNEL
#define UART2_DMARX_FLAG RT_DEVICE_FLAG_DMA_RX
#else
#define UART2_DMARX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART2_DMARX_FLAG 0
#endif
#ifdef BSP_UART3_TX_USING_DMA
#define UART3_DMATX_CHANNEL ES_UART3_DMATX_CHANNEL
#define UART3_DMATX_FLAG RT_DEVICE_FLAG_DMA_TX
#else
#define UART3_DMATX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART3_DMATX_FLAG 0
#endif
#ifdef BSP_UART3_RX_USING_DMA
#define UART3_DMARX_CHANNEL ES_UART3_DMARX_CHANNEL
#define UART3_DMARX_FLAG RT_DEVICE_FLAG_DMA_RX
#else
#define UART3_DMARX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART3_DMARX_FLAG 0
#endif
#ifdef BSP_UART4_TX_USING_DMA
#define UART4_DMATX_CHANNEL ES_UART4_DMATX_CHANNEL
#define UART4_DMATX_FLAG RT_DEVICE_FLAG_DMA_TX
#else
#define UART4_DMATX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART4_DMATX_FLAG 0
#endif
#ifdef BSP_UART4_RX_USING_DMA
#define UART4_DMARX_CHANNEL ES_UART4_DMARX_CHANNEL
#define UART4_DMARX_FLAG RT_DEVICE_FLAG_DMA_RX
#else
#define UART4_DMARX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART4_DMARX_FLAG 0
#endif
#ifdef BSP_UART5_TX_USING_DMA
#define UART5_DMATX_CHANNEL ES_UART5_DMATX_CHANNEL
#define UART5_DMATX_FLAG RT_DEVICE_FLAG_DMA_TX
#else
#define UART5_DMATX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART5_DMATX_FLAG 0
#endif
#ifdef BSP_UART5_RX_USING_DMA
#define UART5_DMARX_CHANNEL ES_UART5_DMARX_CHANNEL
#define UART5_DMARX_FLAG RT_DEVICE_FLAG_DMA_RX
#else
#define UART5_DMARX_CHANNEL ES_DMA_INVAILD_CHANNEL
#define UART5_DMARX_FLAG 0
#endif
#define UART_INVAILD_DMA_CHANNEL (ES_DMA_INVAILD_CHANNEL)
/* es32 uart driver */
struct es32_uart
{
uart_handle_t huart;
struct rt_serial_device *serial;
IRQn_Type irq;
#ifdef RT_SERIAL_USING_DMA
uint16_t dma_tx_channel;
uint16_t dma_rx_channel;
uint32_t last_rx_count;
uint32_t buf_select;
#endif /* RT_SERIAL_USING_DMA */
};
#ifdef RT_SERIAL_USING_DMA
static void _dma_recv_timeout(struct es32_uart *uart, uint32_t dma_end);
#endif /* RT_SERIAL_USING_DMA */
static void uart_int_handler(struct es32_uart*uart)
{
if ((ald_uart_get_mask_flag_status(&uart->huart, UART_IF_RFTH)) != RESET)
{
ald_uart_clear_flag_status(&uart->huart, UART_IF_RFTH);
rt_hw_serial_isr(uart->serial, RT_SERIAL_EVENT_RX_IND);
}
#ifdef RT_SERIAL_USING_DMA
if ((ald_uart_get_mask_flag_status(&uart->huart, UART_IF_RXTO)) != RESET)
{
ald_uart_clear_flag_status(&uart->huart, UART_IF_RXTO);
_dma_recv_timeout(uart, 0);
}
if ((ald_uart_get_mask_flag_status(&uart->huart, UART_IF_TBC)) != RESET)
{
uint32_t cnt = 1000;
ald_uart_clear_flag_status(&uart->huart, UART_IF_TBC);
ald_uart_interrupt_config(&uart->huart, UART_IT_TBC, DISABLE);
CLEAR_BIT(uart->huart.state, UART_STATE_TX_MASK);
while ((uart->huart.perh->STAT & UART_STATUS_TSBUSY) && (cnt--));
ald_uart_clear_flag_status(&uart->huart, UART_IF_TBC);
if (uart->huart.tx_cplt_cbk)
uart->huart.tx_cplt_cbk(&uart->huart);
}
#endif /* RT_SERIAL_USING_DMA */
}
#ifdef BSP_USING_UART0
struct rt_serial_device serial0;
/* UART0 device driver structure */
struct es32_uart uart0 =
{
{UART0},
&serial0,
UART0_IRQn,
#ifdef RT_SERIAL_USING_DMA
UART0_DMATX_CHANNEL,
UART0_DMARX_CHANNEL
#endif /* RT_SERIAL_USING_DMA */
};
void UART0_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_int_handler(&uart0);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART0 */
#ifdef BSP_USING_UART1
struct rt_serial_device serial1;
/* UART1 device driver structure */
struct es32_uart uart1 =
{
{UART1},
&serial1,
UART1_IRQn,
#ifdef RT_SERIAL_USING_DMA
UART1_DMATX_CHANNEL,
UART1_DMARX_CHANNEL
#endif /* RT_SERIAL_USING_DMA */
};
void UART1_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_int_handler(&uart1);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
#ifdef BSP_USING_UART2
struct rt_serial_device serial2;
/* UART2 device driver structure */
struct es32_uart uart2 =
{
{UART2},
&serial2,
UART2_IRQn,
#ifdef RT_SERIAL_USING_DMA
UART2_DMATX_CHANNEL,
UART2_DMARX_CHANNEL
#endif /* RT_SERIAL_USING_DMA */
};
void UART2_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_int_handler(&uart2);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART2 */
#ifdef BSP_USING_UART3
struct rt_serial_device serial3;
/* UART3 device driver structure */
struct es32_uart uart3 =
{
{UART3},
&serial3,
UART3_IRQn,
#ifdef RT_SERIAL_USING_DMA
UART3_DMATX_CHANNEL,
UART3_DMARX_CHANNEL
#endif /* RT_SERIAL_USING_DMA */
};
void UART3_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_int_handler(&uart3);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART3 */
#ifdef BSP_USING_UART4
struct rt_serial_device serial4;
/* UART4 device driver structure */
struct es32_uart uart4 =
{
{UART4},
&serial4,
UART4_IRQn,
#ifdef RT_SERIAL_USING_DMA
UART4_DMATX_CHANNEL,
UART4_DMARX_CHANNEL
#endif /* RT_SERIAL_USING_DMA */
};
void UART4_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_int_handler(&uart4);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART4 */
#ifdef BSP_USING_UART5
struct rt_serial_device serial5;
/* UART5 device driver structure */
struct es32_uart uart5 =
{
{UART5},
&serial5,
UART5_IRQn,
#ifdef RT_SERIAL_USING_DMA
UART5_DMATX_CHANNEL,
UART5_DMARX_CHANNEL
#endif /* RT_SERIAL_USING_DMA */
};
void UART5_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_int_handler(&uart5);
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART5 */
static rt_err_t es32f3x_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
gpio_init_t gpio_initstructure;
struct es32_uart *uart;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
uart = (struct es32_uart *)serial->parent.user_data;
/* Initialize tx pin */
gpio_initstructure.mode = GPIO_MODE_OUTPUT;
gpio_initstructure.odos = GPIO_PUSH_PULL;
gpio_initstructure.pupd = GPIO_PUSH_UP;
gpio_initstructure.podrv = GPIO_OUT_DRIVE_6;
gpio_initstructure.nodrv = GPIO_OUT_DRIVE_6;
gpio_initstructure.flt = GPIO_FILTER_DISABLE;
gpio_initstructure.type = GPIO_TYPE_TTL;
#ifdef BSP_USING_UART0
if (uart == (&uart0))
{
#if defined(ES_UART0_TX_GPIO_FUNC)&&defined(ES_UART0_TX_GPIO_PORT)&&defined(ES_UART0_TX_GPIO_PIN)
gpio_initstructure.func = ES_UART0_TX_GPIO_FUNC;
ald_gpio_init(ES_UART0_TX_GPIO_PORT, ES_UART0_TX_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_UART0_RX_GPIO_FUNC)&&defined(ES_UART0_RX_GPIO_PORT)&&defined(ES_UART0_RX_GPIO_PIN)
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
gpio_initstructure.func = ES_UART0_RX_GPIO_FUNC;
ald_gpio_init(ES_UART0_RX_GPIO_PORT, ES_UART0_RX_GPIO_PIN, &gpio_initstructure);
#endif
ald_cmu_perh_clock_config(CMU_PERH_UART0, ENABLE);
}
#endif /* uart0 gpio init */
#ifdef BSP_USING_UART1
if (uart == (&uart1))
{
#if defined(ES_UART1_TX_GPIO_FUNC)&&defined(ES_UART1_TX_GPIO_PORT)&&defined(ES_UART1_TX_GPIO_PIN)
gpio_initstructure.func = ES_UART1_TX_GPIO_FUNC;
ald_gpio_init(ES_UART1_TX_GPIO_PORT, ES_UART1_TX_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_UART1_RX_GPIO_FUNC)&&defined(ES_UART1_RX_GPIO_PORT)&&defined(ES_UART1_RX_GPIO_PIN)
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
gpio_initstructure.func = ES_UART1_RX_GPIO_FUNC;
ald_gpio_init(ES_UART1_RX_GPIO_PORT, ES_UART1_RX_GPIO_PIN, &gpio_initstructure);
#endif
ald_cmu_perh_clock_config(CMU_PERH_UART1, ENABLE);
}
#endif /* uart1 gpio init */
#ifdef BSP_USING_UART2
if (uart == (&uart2))
{
#if defined(ES_UART2_TX_GPIO_FUNC)&&defined(ES_UART2_TX_GPIO_PORT)&&defined(ES_UART2_TX_GPIO_PIN)
gpio_initstructure.func = ES_UART2_TX_GPIO_FUNC;
ald_gpio_init(ES_UART2_TX_GPIO_PORT, ES_UART2_TX_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_UART2_RX_GPIO_FUNC)&&defined(ES_UART2_RX_GPIO_PORT)&&defined(ES_UART2_RX_GPIO_PIN)
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
gpio_initstructure.func = ES_UART2_RX_GPIO_FUNC;
ald_gpio_init(ES_UART2_RX_GPIO_PORT, ES_UART2_RX_GPIO_PIN, &gpio_initstructure);
#endif
ald_cmu_perh_clock_config(CMU_PERH_UART2, ENABLE);
}
#endif /* uart2 gpio init */
#ifdef BSP_USING_UART3
if (uart == (&uart3))
{
#if defined(ES_UART3_TX_GPIO_FUNC)&&defined(ES_UART3_TX_GPIO_PORT)&&defined(ES_UART3_TX_GPIO_PIN)
gpio_initstructure.func = ES_UART3_TX_GPIO_FUNC;
ald_gpio_init(ES_UART3_TX_GPIO_PORT, ES_UART3_TX_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_UART3_RX_GPIO_FUNC)&&defined(ES_UART3_RX_GPIO_PORT)&&defined(ES_UART3_RX_GPIO_PIN)
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
gpio_initstructure.func = ES_UART3_RX_GPIO_FUNC;
ald_gpio_init(ES_UART3_RX_GPIO_PORT, ES_UART3_RX_GPIO_PIN, &gpio_initstructure);
#endif
ald_cmu_perh_clock_config(CMU_PERH_UART3, ENABLE);
}
#endif /* uart3 gpio init */
#ifdef BSP_USING_UART4
if (uart == (&uart4))
{
#if defined(ES_UART4_TX_GPIO_FUNC)&&defined(ES_UART4_TX_GPIO_PORT)&&defined(ES_UART4_TX_GPIO_PIN)
gpio_initstructure.func = ES_UART4_TX_GPIO_FUNC;
ald_gpio_init(ES_UART4_TX_GPIO_PORT, ES_UART4_TX_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_UART4_RX_GPIO_FUNC)&&defined(ES_UART4_RX_GPIO_PORT)&&defined(ES_UART4_RX_GPIO_PIN)
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
gpio_initstructure.func = ES_UART4_RX_GPIO_FUNC;
ald_gpio_init(ES_UART4_RX_GPIO_PORT, ES_UART4_RX_GPIO_PIN, &gpio_initstructure);
#endif
ald_cmu_perh_clock_config(CMU_PERH_UART4, ENABLE);
}
#endif /* uart4 gpio init */
#ifdef BSP_USING_UART5
if (uart == (&uart5))
{
#if defined(ES_UART5_TX_GPIO_FUNC)&&defined(ES_UART5_TX_GPIO_PORT)&&defined(ES_UART5_TX_GPIO_PIN)
gpio_initstructure.func = ES_UART5_TX_GPIO_FUNC;
ald_gpio_init(ES_UART5_TX_GPIO_PORT, ES_UART5_TX_GPIO_PIN, &gpio_initstructure);
#endif
#if defined(ES_UART5_RX_GPIO_FUNC)&&defined(ES_UART5_RX_GPIO_PORT)&&defined(ES_UART5_RX_GPIO_PIN)
/* Initialize rx pin ,the same as txpin except mode */
gpio_initstructure.mode = GPIO_MODE_INPUT;
gpio_initstructure.func = ES_UART5_RX_GPIO_FUNC;
ald_gpio_init(ES_UART5_RX_GPIO_PORT, ES_UART5_RX_GPIO_PIN, &gpio_initstructure);
#endif
ald_cmu_perh_clock_config(CMU_PERH_UART5, ENABLE);
}
#endif /* uart5 gpio init */
ald_uart_tx_fifo_config(&uart->huart, UART_TXFIFO_EMPTY);
ald_uart_rx_fifo_config(&uart->huart, UART_RXFIFO_1BYTE);
uart->huart.init.mode = UART_MODE_UART;
uart->huart.init.baud = cfg->baud_rate;
uart->huart.init.word_length = (uart_word_length_t)(8 - cfg->data_bits);
uart->huart.init.parity = (uart_parity_t)(cfg->parity == PARITY_EVEN ? UART_PARITY_EVEN : cfg->parity);
uart->huart.init.fctl = UART_HW_FLOW_CTL_DISABLE;
uart->huart.init.stop_bits = UART_STOP_BITS_1;
ald_uart_init(&uart->huart);
if (cfg->bit_order == BIT_ORDER_MSB)
{
UART_MSB_FIRST_ENABLE(&uart->huart);
}
else
{
UART_MSB_FIRST_DISABLE(&uart->huart);
}
if (cfg->invert == NRZ_INVERTED)
{
UART_DATA_INV_ENABLE(&uart->huart);
}
else
{
UART_DATA_INV_DISABLE(&uart->huart);
}
return RT_EOK;
}
#ifdef RT_SERIAL_USING_DMA
static void _dma_recv_timeout(struct es32_uart *uart, uint32_t dma_end)
{
DMA_TypeDef *DMAx;
dma_config_t *dma_cfg;
dma_descriptor_t *descr;
uint32_t rx_count_total;
uint32_t rx_count;
if (dma_end)
{
rx_count = dma_end - uart->last_rx_count;
uart->last_rx_count = 0;
}
else
{
DMAx = uart->huart.hdmarx.perh;
dma_cfg = &uart->huart.hdmarx.config;
descr = (dma_descriptor_t *)(DMAx->CTRLBASE) + dma_cfg->channel;
rx_count_total = (dma_cfg->size) - (uint32_t)(descr->ctrl.n_minus_1) - 1;
if (rx_count_total)
rx_count = rx_count_total - uart->last_rx_count;
else
return;
uart->last_rx_count = rx_count_total;
}
rt_hw_serial_isr(uart->serial, RT_SERIAL_EVENT_RX_DMADONE | (rx_count << 8));
}
/**
* DMA TX complete callback
*/
static void _uart_tx_dma_cplt(uart_handle_t *arg)
{
struct es32_uart *uart;
uart = rt_container_of(arg, struct es32_uart, huart);
rt_hw_serial_isr(uart->serial, RT_SERIAL_EVENT_TX_DMADONE);
}
/**
* DMA RX complete callback
*/
static void _uart_rx_dma_cplt(uart_handle_t *arg)
{
struct es32_uart *uart;
uint8_t *dma_dst;
uart = rt_container_of(arg, struct es32_uart, huart);
if (uart->buf_select == UART_DMA_BUF_SECTIONS - 1)
{
dma_dst = (uint8_t *)uart->huart.hdmarx.config.dst - arg->hdmarx.config.size * (UART_DMA_BUF_SECTIONS - 1);
uart->buf_select = 0;
}
else
{
dma_dst = (uint8_t *)arg->hdmarx.config.dst + arg->hdmarx.config.size;
uart->buf_select += 1;
}
ald_uart_recv_by_dma(arg, dma_dst, arg->hdmarx.config.size, arg->hdmarx.config.channel);
_dma_recv_timeout(uart, arg->hdmarx.config.size);
}
/**
* Setup DMA
*/
static rt_err_t es32f3x_dma_config(struct rt_serial_device *serial, rt_ubase_t flag)
{
struct es32_uart *uart;
struct rt_serial_rx_fifo *rx_fifo;
RT_ASSERT(serial != RT_NULL);
uart = (struct es32_uart *)serial->parent.user_data;
rx_fifo = (struct rt_serial_rx_fifo *)serial->serial_rx;
if (serial->config.bufsz > 1024)
return -RT_ERROR;
if (RT_DEVICE_FLAG_DMA_RX == flag)
{
if (uart->dma_rx_channel >= UART_INVAILD_DMA_CHANNEL)
return -ERROR;
uart->huart.rx_cplt_cbk = _uart_rx_dma_cplt;
UART_SET_TIMEOUT_VALUE(&uart->huart, 0xFF);
UART_RX_TIMEOUT_ENABLE(&uart->huart);
ald_uart_interrupt_config(&uart->huart, UART_IT_RXTO, ENABLE);
uart->last_rx_count = 0;
if (serial->config.bufsz > 0)
{
ald_uart_recv_by_dma(&uart->huart, rx_fifo->buffer, serial->config.bufsz / UART_DMA_BUF_SECTIONS, uart->dma_rx_channel);;
}
}
else if (RT_DEVICE_FLAG_DMA_TX == flag)
{
if (uart->dma_tx_channel >= UART_INVAILD_DMA_CHANNEL)
return -ERROR;
uart->huart.tx_cplt_cbk = _uart_tx_dma_cplt;
}
uart->huart.err_code = UART_ERROR_NONE;
//NVIC_SetPriority(DMA_IRQn,0);
NVIC_EnableIRQ(uart->irq);
ald_cmu_perh_clock_config(CMU_PERH_DMA, ENABLE);
return RT_EOK;
}
#endif /* RT_SERIAL_USING_DMA */
static rt_err_t es32f3x_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct es32_uart *uart;
#ifdef RT_SERIAL_USING_DMA
rt_ubase_t ctrl_arg = (rt_ubase_t)arg;
#endif
RT_ASSERT(serial != RT_NULL);
uart = (struct es32_uart *)serial->parent.user_data;
switch (cmd)
{
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
NVIC_DisableIRQ(uart->irq);
/* disable interrupt */
ald_uart_interrupt_config(&uart->huart, UART_IT_RFTH, DISABLE);
#ifdef RT_SERIAL_USING_DMA
/* disable DMA */
if (ctrl_arg == RT_DEVICE_FLAG_DMA_RX)
{
ald_uart_dma_req_config(&uart->huart, UART_DMA_REQ_RX, DISABLE);
}
else if (ctrl_arg == RT_DEVICE_FLAG_DMA_TX)
{
ald_uart_dma_req_config(&uart->huart, UART_DMA_REQ_TX, DISABLE);
}
#endif
break;
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
NVIC_EnableIRQ(uart->irq);
/* enable interrupt */
ald_uart_interrupt_config(&uart->huart, UART_IT_RFTH, ENABLE);
break;
#ifdef RT_SERIAL_USING_DMA
case RT_DEVICE_CTRL_CONFIG:
/* Setup DMA */
es32f3x_dma_config(serial, ctrl_arg);
break;
#endif
case RT_DEVICE_CTRL_CLOSE:
while (ald_uart_get_status(&uart->huart, (UART_STATUS_TSBUSY)));
#ifdef RT_SERIAL_USING_DMA
uart->huart.rx_cplt_cbk = NULL;
uart->huart.tx_cplt_cbk = NULL;
/* disable DMA */
ald_uart_dma_stop(&uart->huart);
#endif
ald_uart_reset(&uart->huart);
break;
}
return RT_EOK;
}
static int es32f3x_putc(struct rt_serial_device *serial, char c)
{
struct es32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct es32_uart *)serial->parent.user_data;
while (ald_uart_get_status(&uart->huart, UART_STATUS_TFEMPTY) == RESET)
;
WRITE_REG(uart->huart.perh->TXBUF, c);
return 1;
}
static int es32f3x_getc(struct rt_serial_device *serial)
{
int ch = -1;
struct es32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct es32_uart *)serial->parent.user_data;
if (ald_uart_get_status(&uart->huart, UART_STATUS_RFTH))
{
ch = (uint8_t)(uart->huart.perh->RXBUF & 0xFF);
}
return ch;
}
#ifdef RT_SERIAL_USING_DMA
/**
* DMA transmit
*/
static rt_ssize_t es32f3x_dma_transmit(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size, int direction)
{
struct es32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = (struct es32_uart *)serial->parent.user_data;
if (direction == RT_SERIAL_DMA_TX)
{
if (uart->dma_tx_channel >= UART_INVAILD_DMA_CHANNEL)
return 0;
if (OK == ald_uart_send_by_dma(&uart->huart, buf, size, uart->dma_tx_channel))
{
return size;
}
else
{
return 0;
}
}
else if (direction == RT_SERIAL_DMA_RX)
{
if (uart->dma_rx_channel >= UART_INVAILD_DMA_CHANNEL)
return 0;
if (OK == ald_uart_recv_by_dma(&uart->huart, buf, size, uart->dma_rx_channel))
{
return size;
}
else
{
return 0;
}
}
return 0;
}
#endif
static const struct rt_uart_ops es32f3x_uart_ops =
{
es32f3x_configure,
es32f3x_control,
es32f3x_putc,
es32f3x_getc,
#ifdef RT_SERIAL_USING_DMA
es32f3x_dma_transmit
#else
NULL
#endif
};
int rt_hw_uart_init(void)
{
struct es32_uart *uart;
#ifdef BSP_USING_UART0
uart = &uart0;
serial0.ops = &es32f3x_uart_ops;
serial0.config = (struct serial_configure)ES_UART0_CONFIG;
/* register UART0 device */
rt_hw_serial_register(&serial0, ES_DEVICE_NAME_UART0,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
UART0_DMATX_FLAG | UART0_DMARX_FLAG,
uart);
#endif /* BSP_USING_UART0 */
#ifdef BSP_USING_UART1
uart = &uart1;
serial1.ops = &es32f3x_uart_ops;
serial1.config = (struct serial_configure)ES_UART1_CONFIG;
/* register UART1 device */
rt_hw_serial_register(&serial1, ES_DEVICE_NAME_UART1,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
UART1_DMATX_FLAG | UART1_DMARX_FLAG,
uart);
#endif /* BSP_USING_UART1 */
#ifdef BSP_USING_UART2
uart = &uart2;
serial2.ops = &es32f3x_uart_ops;
serial2.config = (struct serial_configure)ES_UART2_CONFIG;
/* register UART2 device */
rt_hw_serial_register(&serial2, ES_DEVICE_NAME_UART2,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
UART2_DMATX_FLAG | UART2_DMARX_FLAG,
uart);
#endif /* BSP_USING_UART2 */
#ifdef BSP_USING_UART3
uart = &uart3;
serial3.ops = &es32f3x_uart_ops;
serial3.config = (struct serial_configure)ES_UART3_CONFIG;
/* register UART3 device */
rt_hw_serial_register(&serial3, ES_DEVICE_NAME_UART3,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
UART3_DMATX_FLAG | UART3_DMARX_FLAG,
uart);
#endif /* BSP_USING_UART3 */
#ifdef BSP_USING_UART4
uart = &uart4;
serial4.ops = &es32f3x_uart_ops;
serial4.config = (struct serial_configure)ES_UART4_CONFIG;
/* register UART4 device */
rt_hw_serial_register(&serial4, ES_DEVICE_NAME_UART4,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
UART4_DMATX_FLAG | UART4_DMARX_FLAG,
uart);
#endif /* BSP_USING_UART4 */
#ifdef BSP_USING_UART5
uart = &uart5;
serial5.ops = &es32f3x_uart_ops;
serial5.config = (struct serial_configure)ES_UART5_CONFIG;
/* register UART5 device */
rt_hw_serial_register(&serial5, ES_DEVICE_NAME_UART5,
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX |
UART5_DMATX_FLAG | UART5_DMARX_FLAG,
uart);
#endif /* BSP_USING_UART5 */
return 0;
}
INIT_BOARD_EXPORT(rt_hw_uart_init);
#endif
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