483 lines
11 KiB
C
483 lines
11 KiB
C
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/**************************************************************************//**
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*
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* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2021-1-11 Wayne First version
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*
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******************************************************************************/
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#include <rtconfig.h>
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#if defined(BSP_USING_UART)
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#include <rtdevice.h>
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#include <rthw.h>
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#include "NuMicro.h"
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#include <drv_uart.h>
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#include <drv_sys.h>
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/* Private define ---------------------------------------------------------------*/
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enum
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{
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UART_START = -1,
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#if defined(BSP_USING_UART0)
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UART0_IDX,
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#endif
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#if defined(BSP_USING_UART1)
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UART1_IDX,
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#endif
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#if defined(BSP_USING_UART2)
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UART2_IDX,
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#endif
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#if defined(BSP_USING_UART3)
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UART3_IDX,
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#endif
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#if defined(BSP_USING_UART4)
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UART4_IDX,
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#endif
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#if defined(BSP_USING_UART5)
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UART5_IDX,
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#endif
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#if defined(BSP_USING_UART6)
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UART6_IDX,
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#endif
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#if defined(BSP_USING_UART7)
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UART7_IDX,
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#endif
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#if defined(BSP_USING_UART8)
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UART8_IDX,
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#endif
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#if defined(BSP_USING_UART9)
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UART9_IDX,
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#endif
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#if defined(BSP_USING_UART10)
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UART10_IDX,
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#endif
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UART_CNT
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};
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/* Private typedef --------------------------------------------------------------*/
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struct nu_uart
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{
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rt_serial_t dev;
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char *name;
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UART_T *uart_base;
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IRQn_Type irqn;
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E_SYS_IPRST rstidx;
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E_SYS_IPCLK clkidx;
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};
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typedef struct nu_uart *nu_uart_t;
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/* Private functions ------------------------------------------------------------*/
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static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg);
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static rt_err_t nu_uart_control(struct rt_serial_device *serial, int cmd, void *arg);
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static int nu_uart_send(struct rt_serial_device *serial, char c);
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static int nu_uart_receive(struct rt_serial_device *serial);
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/* Public functions ------------------------------------------------------------*/
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/* Private variables ------------------------------------------------------------*/
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static const struct rt_uart_ops nu_uart_ops =
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{
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.configure = nu_uart_configure,
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.control = nu_uart_control,
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.putc = nu_uart_send,
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.getc = nu_uart_receive,
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.dma_transmit = RT_NULL
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};
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static const struct serial_configure nu_uart_default_config =
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RT_SERIAL_CONFIG_DEFAULT;
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static struct nu_uart nu_uart_arr [] =
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{
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#if defined(BSP_USING_UART0)
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{
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.name = "uart0",
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.uart_base = UART0,
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.irqn = IRQ_UART0,
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.rstidx = UART0RST,
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.clkidx = UART0CKEN,
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},
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#endif
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#if defined(BSP_USING_UART1)
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{
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.name = "uart1",
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.uart_base = UART1,
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.irqn = IRQ_UART1,
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.rstidx = UART1RST,
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.clkidx = UART1CKEN,
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},
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#endif
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#if defined(BSP_USING_UART2)
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{
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.name = "uart2",
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.uart_base = UART2,
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.irqn = IRQ_UART2,
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.rstidx = UART2RST,
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.clkidx = UART2CKEN,
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},
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#endif
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#if defined(BSP_USING_UART3)
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{
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.name = "uart3",
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.uart_base = UART3,
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.irqn = IRQ_UART3,
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.rstidx = UART3RST,
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.clkidx = UART3CKEN,
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},
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#endif
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#if defined(BSP_USING_UART4)
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{
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.name = "uart4",
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.uart_base = UART4,
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.irqn = IRQ_UART4,
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.rstidx = UART4RST,
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.clkidx = UART4CKEN,
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},
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#endif
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#if defined(BSP_USING_UART5)
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{
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.name = "uart5",
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.uart_base = UART5,
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.irqn = IRQ_UART5,
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.rstidx = UART5RST,
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.clkidx = UART5CKEN,
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},
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#endif
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#if defined(BSP_USING_UART6)
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{
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.name = "uart6",
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.uart_base = UART6,
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.irqn = IRQ_UART6,
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.rstidx = UART6RST,
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.clkidx = UART6CKEN,
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},
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#endif
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#if defined(BSP_USING_UART7)
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{
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.name = "uart7",
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.uart_base = UART7,
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.irqn = IRQ_UART7,
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.rstidx = UART7RST,
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.clkidx = UART7CKEN,
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},
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#endif
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#if defined(BSP_USING_UART8)
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{
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.name = "uart8",
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.uart_base = UART8,
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.irqn = IRQ_UART8,
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.rstidx = UART8RST,
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.clkidx = UART8CKEN,
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},
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#endif
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#if defined(BSP_USING_UART9)
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{
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.name = "uart9",
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.uart_base = UART9,
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.irqn = IRQ_UART9,
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.rstidx = UART9RST,
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.clkidx = UART9CKEN,
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},
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#endif
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#if defined(BSP_USING_UART10)
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{
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.name = "uart10",
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.uart_base = UARTA,
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.irqn = IRQ_UART10,
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.rstidx = UART10RST,
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.clkidx = UART10CKEN,
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},
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#endif
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}; /* uart nu_uart */
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/**
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* All UART interrupt service routine
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*/
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static void nu_uart_isr(int vector, void *param)
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{
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/* Get base address of uart register */
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nu_uart_t serial = (nu_uart_t)param;
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UART_T *uart_base = ((nu_uart_t)serial)->uart_base;
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/* Get interrupt event */
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uint32_t u32IntSts = uart_base->INTSTS;
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uint32_t u32FIFOSts = uart_base->FIFOSTS;
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/* Handle RX event */
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if (u32IntSts & (UART_ISR_RDA_INT_Msk | UART_ISR_TOUT_INT_Msk))
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{
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rt_hw_serial_isr(&serial->dev, RT_SERIAL_EVENT_RX_IND);
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}
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uart_base->INTSTS = u32IntSts;
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uart_base->FIFOSTS = u32FIFOSts;
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}
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/**
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* Set RS-485 AUD mode
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*/
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void nu_uart_set_rs485aud(struct rt_serial_device *serial, rt_bool_t bRTSActiveLowLevel)
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{
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UART_T *uart_base;
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RT_ASSERT(serial != RT_NULL);
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/* Get base address of uart register */
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uart_base = ((nu_uart_t)serial)->uart_base;
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/* Set RTS as RS-485 phy direction controlling ping. */
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uart_base->FUNCSEL = UART_FUNCSEL_RS485;
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/* Set RS585 configuration */
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uart_base->ALTCTL &= ~(UART_ALT_CSR_RS485_NMM_Msk | UART_ALT_CSR_RS485_AAD_Msk | UART_ALT_CSR_RS485_AUD_Msk | UART_ALT_CSR_RS485_ADD_EN_Msk);
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uart_base->ALTCTL |= UART_ALT_CSR_RS485_AUD_Msk;
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if (bRTSActiveLowLevel)
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{
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/* Set direction pin as active-high. */
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uart_base->MODEM &= ~UART_MCR_LEV_RTS_Msk;
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}
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else
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{
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/* Set direction pin as active-low. */
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uart_base->MODEM |= UART_MCR_LEV_RTS_Msk;
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}
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rt_kprintf("Set %s to RS-485 AUD function mode. ActiveLowLevel-%s\n", ((nu_uart_t)serial)->name, bRTSActiveLowLevel ? "YES" : "NO");
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}
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/**
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* Configure uart port
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*/
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static rt_err_t nu_uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
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{
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rt_err_t ret = RT_EOK;
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uint32_t uart_word_len = 0;
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uint32_t uart_stop_bit = 0;
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uint32_t uart_parity = 0;
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/* Get base address of uart register */
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UART_T *uart_base = ((nu_uart_t)serial)->uart_base;
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/* Check baudrate */
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RT_ASSERT(cfg->baud_rate != 0);
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/* Check word len */
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switch (cfg->data_bits)
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{
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case DATA_BITS_5:
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uart_word_len = UART_WORD_LEN_5;
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break;
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case DATA_BITS_6:
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uart_word_len = UART_WORD_LEN_6;
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break;
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case DATA_BITS_7:
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uart_word_len = UART_WORD_LEN_7;
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break;
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case DATA_BITS_8:
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uart_word_len = UART_WORD_LEN_8;
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break;
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default:
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rt_kprintf("Unsupported data length");
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ret = RT_EINVAL;
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goto exit_nu_uart_configure;
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}
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/* Check stop bit */
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switch (cfg->stop_bits)
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{
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case STOP_BITS_1:
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uart_stop_bit = UART_STOP_BIT_1;
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break;
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case STOP_BITS_2:
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uart_stop_bit = UART_STOP_BIT_2;
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break;
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default:
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rt_kprintf("Unsupported stop bit");
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ret = RT_EINVAL;
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goto exit_nu_uart_configure;
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}
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/* Check parity */
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switch (cfg->parity)
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{
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case PARITY_NONE:
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uart_parity = UART_PARITY_NONE;
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break;
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case PARITY_ODD:
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uart_parity = UART_PARITY_ODD;
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break;
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case PARITY_EVEN:
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uart_parity = UART_PARITY_EVEN;
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break;
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default:
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rt_kprintf("Unsupported parity");
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ret = RT_EINVAL;
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goto exit_nu_uart_configure;
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}
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nu_sys_ip_reset(((nu_uart_t)serial)->rstidx);
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/* Open Uart and set UART Baudrate */
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UART_Open(uart_base, cfg->baud_rate);
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/* Set line configuration. */
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UART_SetLineConfig(uart_base, 0, uart_word_len, uart_parity, uart_stop_bit);
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/* Enable interrupt. */
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rt_hw_interrupt_umask(((nu_uart_t)serial)->irqn);
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exit_nu_uart_configure:
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if (ret != RT_EOK)
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UART_Close(uart_base);
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return -(ret);
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}
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/**
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* Uart interrupt control
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*/
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static rt_err_t nu_uart_control(struct rt_serial_device *serial, int cmd, void *arg)
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{
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nu_uart_t psNuUart = (nu_uart_t)serial;
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rt_err_t result = RT_EOK;
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rt_uint32_t flag;
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rt_ubase_t ctrl_arg = (rt_ubase_t)arg;
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RT_ASSERT(serial != RT_NULL);
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/* Get base address of uart register */
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UART_T *uart_base = psNuUart->uart_base;
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switch (cmd)
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{
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case RT_DEVICE_CTRL_CLR_INT:
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if (ctrl_arg == RT_DEVICE_FLAG_INT_RX) /* Disable INT-RX */
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{
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flag = UART_IER_RDA_IEN_Msk | UART_IER_RTO_IEN_Msk | UART_IER_TIME_OUT_EN_Msk;
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UART_DISABLE_INT(uart_base, flag);
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}
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else if (ctrl_arg == RT_DEVICE_FLAG_DMA_RX) /* Disable DMA-RX */
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{
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/* Disable Receive Line interrupt & Stop DMA RX transfer. */
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}
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break;
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||
|
|
case RT_DEVICE_CTRL_SET_INT:
|
||
|
|
if (ctrl_arg == RT_DEVICE_FLAG_INT_RX) /* Enable INT-RX */
|
||
|
|
{
|
||
|
|
flag = UART_IER_RDA_IEN_Msk | UART_IER_RTO_IEN_Msk | UART_IER_TIME_OUT_EN_Msk;
|
||
|
|
UART_ENABLE_INT(uart_base, flag);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case RT_DEVICE_CTRL_CLOSE:
|
||
|
|
/* Disable interrupt. */
|
||
|
|
rt_hw_interrupt_mask(psNuUart->irqn);
|
||
|
|
|
||
|
|
/* Close UART port */
|
||
|
|
UART_Close(uart_base);
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
result = -RT_EINVAL;
|
||
|
|
break;
|
||
|
|
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Uart put char
|
||
|
|
*/
|
||
|
|
static int nu_uart_send(struct rt_serial_device *serial, char c)
|
||
|
|
{
|
||
|
|
RT_ASSERT(serial != RT_NULL);
|
||
|
|
|
||
|
|
/* Get base address of uart register */
|
||
|
|
UART_T *uart_base = ((nu_uart_t)serial)->uart_base;
|
||
|
|
|
||
|
|
/* Waiting if TX-FIFO is full. */
|
||
|
|
while (UART_IS_TX_FULL(uart_base));
|
||
|
|
|
||
|
|
/* Put char into TX-FIFO */
|
||
|
|
UART_WRITE(uart_base, c);
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Uart get char
|
||
|
|
*/
|
||
|
|
static int nu_uart_receive(struct rt_serial_device *serial)
|
||
|
|
{
|
||
|
|
RT_ASSERT(serial != RT_NULL);
|
||
|
|
|
||
|
|
/* Get base address of uart register */
|
||
|
|
UART_T *uart_base = ((nu_uart_t)serial)->uart_base;
|
||
|
|
|
||
|
|
/* Return failure if RX-FIFO is empty. */
|
||
|
|
if (UART_GET_RX_EMPTY(uart_base))
|
||
|
|
{
|
||
|
|
return -1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Get char from RX-FIFO */
|
||
|
|
return UART_READ(uart_base);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Hardware UART Initialization
|
||
|
|
*/
|
||
|
|
rt_err_t rt_hw_uart_init(void)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
rt_uint32_t flag = RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX;
|
||
|
|
rt_err_t ret = RT_EOK;
|
||
|
|
|
||
|
|
for (i = (UART_START + 1); i < UART_CNT; i++)
|
||
|
|
{
|
||
|
|
nu_uart_arr[i].dev.ops = &nu_uart_ops;
|
||
|
|
nu_uart_arr[i].dev.config = nu_uart_default_config;
|
||
|
|
|
||
|
|
rt_hw_interrupt_install(nu_uart_arr[i].irqn, nu_uart_isr, &nu_uart_arr[i], nu_uart_arr[i].name);
|
||
|
|
|
||
|
|
nu_sys_ipclk_enable(nu_uart_arr[i].clkidx);
|
||
|
|
|
||
|
|
ret = rt_hw_serial_register(&nu_uart_arr[i].dev, nu_uart_arr[i].name, flag, NULL);
|
||
|
|
RT_ASSERT(ret == RT_EOK);
|
||
|
|
}
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif //#if defined(BSP_USING_UART)
|