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/*
* Copyright (c) 2006-2022, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2022-03-02 FMD-AE first version
*/
#include "board.h"
#include "drv_usart.h"
#include "drv_config.h"
#ifdef RT_USING_SERIAL
//#define DRV_DEBUG
#define LOG_TAG "drv.usart"
#include <drv_log.h>
#if !defined(BSP_USING_UART1) && !defined(BSP_USING_UART2)
#error "Please define at least one BSP_USING_UARTx"
/* this driver can be disabled at menuconfig -> RT-Thread Components -> Device Drivers */
#endif
enum
{
#ifdef BSP_USING_UART1
UART1_INDEX,
#endif
#ifdef BSP_USING_UART2
UART2_INDEX,
#endif
};
static struct ft32_uart_config uart_config[] =
{
#ifdef BSP_USING_UART1
UART1_CONFIG,
#endif
#ifdef BSP_USING_UART2
UART2_CONFIG,
#endif
};
static struct ft32_uart uart_obj[sizeof(uart_config) / sizeof(uart_config[0])] = {0};
void UART_MspInit(USART_TypeDef *USARTx)
{
GPIO_InitTypeDef GPIO_InitStruct;
if (USARTx == USART1)
{
#if defined(SOC_SERIES_FT32F0)
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
#endif
#if defined(SOC_SERIES_FT32F4)
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
#endif
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
/*GPIO INIT*/
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_10;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStruct);
#if defined(SOC_SERIES_FT32F0)
GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_1);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_1);
#endif
#if defined(SOC_SERIES_FT32F4)
GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_7);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_7);
#endif
/* USART1 interrupt Init */
NVIC_SetPriority(USART1_IRQn, 5);
NVIC_EnableIRQ(USART1_IRQn);
}
else if (USARTx == USART2)
{
#if defined(SOC_SERIES_FT32F0)
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
#endif
#if defined(SOC_SERIES_FT32F4)
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART2, ENABLE);
#endif
/*GPIO INIT*/
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_2 | GPIO_Pin_3;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStruct);
#if defined(SOC_SERIES_FT32F0)
GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_1);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_1);
#endif
#if defined(SOC_SERIES_FT32F4)
GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_7);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_7);
#endif
/* USART2 interrupt Init */
NVIC_SetPriority(USART2_IRQn, 5);
NVIC_EnableIRQ(USART2_IRQn);
}
}
static rt_err_t ft32_configure(struct rt_serial_device *serial, struct serial_configure *cfg)
{
struct ft32_uart *uart;
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(cfg != RT_NULL);
uart = rt_container_of(serial, struct ft32_uart, serial);
uart->Init.USART_BaudRate = cfg->baud_rate;
#if defined(SOC_SERIES_FT32F0)
uart->Init.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
#endif
#if defined(SOC_SERIES_FT32F4)
uart->Init.USART_Mode = USART_MODE_TX_RX;
#endif
switch (cfg->flowcontrol)
{
case RT_SERIAL_FLOWCONTROL_NONE:
uart->Init.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
break;
case RT_SERIAL_FLOWCONTROL_CTSRTS:
#if defined(SOC_SERIES_FT32F0)
uart->Init.USART_HardwareFlowControl = USART_HardwareFlowControl_RTS_CTS;
#endif
#if defined(SOC_SERIES_FT32F4)
uart->Init.USART_HardwareFlowControl = USART_HardwareFlowControl_RTS_DTR;
#endif
break;
default:
uart->Init.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
break;
}
switch (cfg->data_bits)
{
#if defined(SOC_SERIES_FT32F0)
case DATA_BITS_8:
if (cfg->parity == PARITY_ODD || cfg->parity == PARITY_EVEN)
uart->Init.USART_WordLength = USART_WordLength_9b;
else
uart->Init.USART_WordLength = USART_WordLength_8b;
break;
case DATA_BITS_9:
uart->Init.USART_WordLength = USART_WordLength_9b;
break;
default:
uart->Init.USART_WordLength = USART_WordLength_8b;
break;
#endif
#if defined(SOC_SERIES_FT32F4)
case DATA_BITS_9:
uart->Init.USART_WordLength = USART_CHAR_LENGTH9_ENABLE;
break;
case DATA_BITS_8:
uart->Init.USART_WordLength = USART_CHAR_LENGTH_8BIT;
break;
case DATA_BITS_7:
uart->Init.USART_WordLength = USART_CHAR_LENGTH_7BIT;
break;
case DATA_BITS_6:
uart->Init.USART_WordLength = USART_CHAR_LENGTH_6BIT;
break;
case DATA_BITS_5:
uart->Init.USART_WordLength = USART_CHAR_LENGTH_5BIT;
break;
default:
uart->Init.USART_WordLength = USART_CHAR_LENGTH_8BIT;
break;
#endif
}
switch (cfg->stop_bits)
{
#if defined(SOC_SERIES_FT32F0)
case STOP_BITS_1:
uart->Init.USART_StopBits = USART_StopBits_1;
break;
case STOP_BITS_2:
uart->Init.USART_StopBits = USART_StopBits_2;
break;
default:
uart->Init.USART_StopBits = USART_StopBits_1;
break;
#endif
#if defined(SOC_SERIES_FT32F4)
case STOP_BITS_1:
uart->Init.USART_StopBits = USART_STOPBITS_1;
break;
case STOP_BITS_2:
uart->Init.USART_StopBits = USART_STOPBITS_2;
break;
default:
uart->Init.USART_StopBits = USART_STOPBITS_1;
break;
#endif
}
switch (cfg->parity)
{
#if defined(SOC_SERIES_FT32F0)
case PARITY_NONE:
uart->Init.USART_Parity = USART_Parity_No;
break;
case PARITY_ODD:
uart->Init.USART_Parity = USART_Parity_Odd;
break;
case PARITY_EVEN:
uart->Init.USART_Parity = USART_Parity_Even;
break;
default:
uart->Init.USART_Parity = USART_Parity_No;
break;
#endif
#if defined(SOC_SERIES_FT32F4)
case PARITY_NONE:
uart->Init.USART_Parity = USART_PARITY_NONE;
break;
case PARITY_ODD:
uart->Init.USART_Parity = USART_PARITY_ODD;
break;
case PARITY_EVEN:
uart->Init.USART_Parity = USART_PARITY_EVEN;
break;
default:
uart->Init.USART_Parity = USART_PARITY_NONE;
break;
#endif
}
UART_MspInit(uart->config->Instance);
USART_Init(uart->config->Instance, &(uart->Init));
USART_Cmd(uart->config->Instance, ENABLE);
return RT_EOK;
}
static rt_err_t ft32_control(struct rt_serial_device *serial, int cmd, void *arg)
{
struct ft32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct ft32_uart, serial);
switch (cmd)
{
/* disable interrupt */
case RT_DEVICE_CTRL_CLR_INT:
/* disable rx irq */
NVIC_DisableIRQ(uart->config->irq_type);
/* disable interrupt */
#if defined(SOC_SERIES_FT32F0)
/* enable interrupt */
USART_ITConfig(uart->config->Instance, USART_IT_RXNE, DISABLE);
break;
#endif
#if defined(SOC_SERIES_FT32F4)
/* enable interrupt */
USART_ITConfig(uart->config->Instance, USART_IT_RXRDY, DISABLE);
break;
#endif
break;
/* enable interrupt */
case RT_DEVICE_CTRL_SET_INT:
/* enable rx irq */
NVIC_SetPriority(uart->config->irq_type, 1);
NVIC_EnableIRQ(uart->config->irq_type);
#if defined(SOC_SERIES_FT32F0)
/* enable interrupt */
USART_ITConfig(uart->config->Instance, USART_IT_RXNE, ENABLE);
break;
#endif
#if defined(SOC_SERIES_FT32F4)
/* enable interrupt */
USART_ITConfig(uart->config->Instance, USART_IT_RXRDY, ENABLE);
break;
#endif
break;
case RT_DEVICE_CTRL_CLOSE:
USART_DeInit(uart->config->Instance);
break;
}
return RT_EOK;
}
#if defined(SOC_SERIES_FT32F0)
rt_uint32_t ft32_uart_get_mask(rt_uint32_t word_length, rt_uint32_t parity)
{
rt_uint32_t mask;
if (word_length == USART_WordLength_8b)
{
if (parity == USART_Parity_No)
{
mask = 0x00FFU ;
}
else
{
mask = 0x007FU ;
}
}
else if (word_length == USART_WordLength_9b)
{
if (parity == USART_Parity_No)
{
mask = 0x01FFU ;
}
else
{
mask = 0x00FFU ;
}
}
else if (word_length == USART_WordLength_7b)
{
if (parity == USART_Parity_No)
{
mask = 0x007FU ;
}
else
{
mask = 0x003FU ;
}
}
else
{
mask = 0x0000U;
}
return mask;
}
#endif
static int ft32_putc(struct rt_serial_device *serial, char c)
{
struct ft32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct ft32_uart, serial);
#if defined(SOC_SERIES_FT32F0)
UART_INSTANCE_CLEAR_FUNCTION(uart->config->Instance, USART_FLAG_TC);
uart->config->Instance->TDR = c;
#elif defined(SOC_SERIES_FT32F4)
USART_Transmit(uart->config->Instance, c);
#else
uart->config->Instance->DR = c;
#endif
#if defined(SOC_SERIES_FT32F0)
while (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_TC) == RESET);
#endif
#if defined(SOC_SERIES_FT32F4)
while (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_TXRDY) == RESET);
#endif
return 1;
}
static int ft32_getc(struct rt_serial_device *serial)
{
int ch;
struct ft32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct ft32_uart, serial);
ch = -1;
#if defined(SOC_SERIES_FT32F0)
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_RXNE) != RESET)
#endif
#if defined(SOC_SERIES_FT32F4)
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_RXRDY) != RESET)
#endif
{
#if defined(SOC_SERIES_FT32F0)
ch = uart->config->Instance->RDR & ft32_uart_get_mask(uart->Init.USART_WordLength, uart->Init.USART_Parity);
#elif defined(SOC_SERIES_FT32F4)
ch = USART_Receive(uart->config->Instance);
#else
ch = uart->config->Instance->DR & ft32_uart_get_mask(uart->Init.USART_WordLength, uart->Init.USART_Parity);
#endif
}
return ch;
}
static rt_ssize_t ft32_dma_transmit(struct rt_serial_device *serial, rt_uint8_t *buf, rt_size_t size, int direction)
{
RT_ASSERT(serial != RT_NULL);
RT_ASSERT(buf != RT_NULL);
if (size == 0)
{
return 0;
}
if (RT_SERIAL_DMA_TX == direction)
{
return size;
}
return 0;
}
/**
* Uart common interrupt process. This need add to uart ISR.
*
* @param serial serial device
*/
static void uart_isr(struct rt_serial_device *serial)
{
struct ft32_uart *uart;
RT_ASSERT(serial != RT_NULL);
uart = rt_container_of(serial, struct ft32_uart, serial);
#if defined(SOC_SERIES_FT32F0)
/* UART in mode Receiver -------------------------------------------------*/
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_RXNE) != RESET)
{
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
}
#endif
#if defined(SOC_SERIES_FT32F4)
/* UART in mode Receiver -------------------------------------------------*/
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_RXRDY) != RESET)
{
rt_hw_serial_isr(serial, RT_SERIAL_EVENT_RX_IND);
}
#endif
#if defined (SOC_SERIES_FT32F0)
else
{
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_ORE) != RESET)
{
USART_ClearFlag(uart->config->Instance, USART_FLAG_ORE);
}
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_NE) != RESET)
{
USART_ClearFlag(uart->config->Instance, USART_FLAG_NE);
}
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_FE) != RESET)
{
USART_ClearFlag(uart->config->Instance, USART_FLAG_FE);
}
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_PE) != RESET)
{
USART_ClearFlag(uart->config->Instance, USART_FLAG_PE);
}
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_CTS) != RESET)
{
UART_INSTANCE_CLEAR_FUNCTION(uart->config->Instance, USART_FLAG_CTS);
}
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_TXE) != RESET)
{
UART_INSTANCE_CLEAR_FUNCTION(uart->config->Instance, USART_FLAG_TXE);
}
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_TC) != RESET)
{
UART_INSTANCE_CLEAR_FUNCTION(uart->config->Instance, USART_FLAG_TC);
}
if (USART_GetFlagStatus(uart->config->Instance, USART_FLAG_RXNE) != RESET)
{
UART_INSTANCE_CLEAR_FUNCTION(uart->config->Instance, USART_FLAG_RXNE);
}
}
#endif
#if defined (SOC_SERIES_FT32F4)
else
{
}
#endif
}
#if defined(SOC_SERIES_FT32F0)
#if defined(BSP_USING_UART1)
void USART1_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART1_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
#if defined(BSP_USING_UART2)
void USART2_IRQHandler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART2_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART2 */
#endif
#if defined(SOC_SERIES_FT32F4)
#if defined(BSP_USING_UART1)
void USART1_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART1_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART1 */
#if defined(BSP_USING_UART2)
void USART2_Handler(void)
{
/* enter interrupt */
rt_interrupt_enter();
uart_isr(&(uart_obj[UART2_INDEX].serial));
/* leave interrupt */
rt_interrupt_leave();
}
#endif /* BSP_USING_UART2 */
#endif
static void ft32_uart_get_dma_config(void)
{
#ifdef BSP_USING_UART1
uart_obj[UART1_INDEX].uart_dma_flag = 0;
#endif
#ifdef BSP_USING_UART2
uart_obj[UART2_INDEX].uart_dma_flag = 0;
#endif
}
static const struct rt_uart_ops ft32_uart_ops =
{
.configure = ft32_configure,
.control = ft32_control,
.putc = ft32_putc,
.getc = ft32_getc,
.dma_transmit = ft32_dma_transmit
};
int rt_hw_usart_init(void)
{
rt_size_t obj_num = sizeof(uart_obj) / sizeof(struct ft32_uart);
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
rt_err_t result = 0;
ft32_uart_get_dma_config();
for (int i = 0; i < obj_num; i++)
{
/* init UART object */
uart_obj[i].config = &uart_config[i];
uart_obj[i].serial.ops = &ft32_uart_ops;
uart_obj[i].serial.config = config;
/* register UART device */
result = rt_hw_serial_register(&uart_obj[i].serial, uart_obj[i].config->name,
RT_DEVICE_FLAG_RDWR
| RT_DEVICE_FLAG_INT_RX
| RT_DEVICE_FLAG_INT_TX
| uart_obj[i].uart_dma_flag
, NULL);
RT_ASSERT(result == RT_EOK);
}
return result;
}
#endif /* RT_USING_SERIAL */
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