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This commit is contained in:
yelvlab
2026-02-18 17:44:38 +08:00
parent d324d5f92a
commit 7419dec1b5
14 changed files with 1076 additions and 281 deletions
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112
Src/uart.c
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@@ -6,71 +6,31 @@
#include "uart_ring_buffer.h"
void rs485_init(void) {
void uart_init(void) {
/* 使能 GPIOA 和 USART 时钟 */
rcu_periph_clock_enable(UART_GPIO_RCU);
rcu_periph_clock_enable(UART_RCU);
#ifndef RS485_MAX13487
/* 使能 GPIOA 和 USART0 时钟 */
rcu_periph_clock_enable(RS485_GPIO_RCU);
rcu_periph_clock_enable(RS485_RCU);
/* 配置 PA2 为 USART_TX，PA3 为 USART_RX */
gpio_af_set(UART_GPIO_PORT, GPIO_AF_1, UART_TX_PIN | UART_RX_PIN);
/* 配置 PA2 为 USART0_TX，PA3 为 USART0_RX */
gpio_af_set(RS485_GPIO_PORT, GPIO_AF_1, RS485_TX_PIN | RS485_RX_PIN | RS485_EN_PIN);
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, RS485_TX_PIN | RS485_RX_PIN);
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_TX_PIN | RS485_RX_PIN);
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_NONE, RS485_EN_PIN);
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_EN_PIN);
gpio_mode_set(UART_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, UART_TX_PIN | UART_RX_PIN);
gpio_output_options_set(UART_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, UART_TX_PIN | UART_RX_PIN);
/* 配置波特率、数据位、停止位等 */
usart_deinit(RS485_PHY);
usart_word_length_set(RS485_PHY, USART_WL_8BIT);
usart_stop_bit_set(RS485_PHY, USART_STB_1BIT);
usart_parity_config(RS485_PHY, USART_PM_NONE);
usart_baudrate_set(RS485_PHY, RS485_BAUDRATE);
usart_receive_config(RS485_PHY, USART_RECEIVE_ENABLE);
usart_transmit_config(RS485_PHY, USART_TRANSMIT_ENABLE);
usart_deinit(UART_PHY);
usart_word_length_set(UART_PHY, USART_WL_8BIT);
usart_stop_bit_set(UART_PHY, USART_STB_1BIT);
usart_parity_config(UART_PHY, USART_PM_NONE);
usart_baudrate_set(UART_PHY, UART_BAUDRATE);
usart_receive_config(UART_PHY, USART_RECEIVE_ENABLE);
usart_transmit_config(UART_PHY, USART_TRANSMIT_ENABLE);
usart_driver_assertime_config(RS485_PHY, 0x01);
usart_driver_deassertime_config(RS485_PHY, 0x10);
usart_enable(UART_PHY);
usart_rs485_driver_enable(RS485_PHY);
usart_enable(RS485_PHY);
nvic_irq_enable(RS485_IRQ, 0);
usart_interrupt_enable(RS485_PHY, USART_INT_RBNE);
// usart_interrupt_enable(RS485_PHY, USART_INT_IDLE);
#else
rcu_periph_clock_enable(RS485_GPIO_RCU);
rcu_periph_clock_enable(RS485_RCU);
gpio_af_set(RS485_GPIO_PORT, GPIO_AF_1, GPIO_PIN_2 | GPIO_PIN_3);
/* configure USART Tx&Rx as alternate function push-pull */
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, RS485_TX_PIN | RS485_RX_PIN);
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, RS485_TX_PIN | RS485_RX_PIN);
/* configure RS485 EN Pin */
gpio_mode_set(RS485_GPIO_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE, RS485_EN_PIN);
gpio_output_options_set(RS485_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, RS485_EN_PIN);
gpio_bit_write(RS485_GPIO_PORT, RS485_EN_PIN, SET);
/* USART configure */
usart_deinit(RS485_PHY);
usart_baudrate_set(RS485_PHY, RS485_BAUDRATE);
usart_receive_config(RS485_PHY, USART_RECEIVE_ENABLE);
usart_transmit_config(RS485_PHY, USART_TRANSMIT_ENABLE);
usart_enable(RS485_PHY);
nvic_irq_enable(USART0_IRQn, 0);
usart_interrupt_enable(RS485_PHY, USART_INT_RBNE);
usart_interrupt_enable(RS485_PHY, USART_INT_IDLE);
#endif // RS485_MAX13487
}
nvic_irq_enable(UART_IRQ, 0);
usart_interrupt_enable(UART_PHY, USART_INT_RBNE);
}
/******************************************************************************/
/* 具体的中断处理函数实现 */
@@ -105,3 +65,37 @@ void usart1_irq_handler(void) {
// 在这里添加空闲中断处理逻辑
}
}
/* 临时调试串口初始化 (PA9/PA10 USART0) */
void debug_usart_init(void)
{
/* 使能 GPIOA 和 USART0 时钟 */
rcu_periph_clock_enable(RCU_GPIOA);
rcu_periph_clock_enable(RCU_USART0);
/* 配置 PA9(TX) 和 PA10(RX) 复用功能 */
gpio_af_set(GPIOA, GPIO_AF_1, GPIO_PIN_9 | GPIO_PIN_10);
/* 配置 GPIO 模式 */
gpio_mode_set(GPIOA, GPIO_MODE_AF, GPIO_PUPD_PULLUP, GPIO_PIN_9 | GPIO_PIN_10);
gpio_output_options_set(GPIOA, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, GPIO_PIN_9 | GPIO_PIN_10);
/* USART0 配置 */
usart_deinit(USART0);
usart_baudrate_set(USART0, 115200U);
usart_word_length_set(USART0, USART_WL_8BIT);
usart_stop_bit_set(USART0, USART_STB_1BIT);
usart_parity_config(USART0, USART_PM_NONE);
usart_hardware_flow_rts_config(USART0, USART_RTS_DISABLE);
usart_hardware_flow_cts_config(USART0, USART_CTS_DISABLE);
usart_receive_config(USART0, USART_RECEIVE_ENABLE);
usart_transmit_config(USART0, USART_TRANSMIT_ENABLE);
/* 打开接收中断，作为辅助命令输入口 */
usart_interrupt_enable(USART0, USART_INT_RBNE);
usart_enable(USART0);
/* NVIC 使能串口0中断，优先级可略低于主口 */
nvic_irq_enable(USART0_IRQn, 1);
}