hulk/gd32e230_bootloader
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yelvlab
2026-01-23 20:17:07 +08:00
parent bd541d585e
commit 3a56d5937a
5 changed files with 64 additions and 15 deletions
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12
Src/uart.c
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@@ -12,13 +12,13 @@ void rs485_init(void) {
rcu_periph_clock_enable(RS485_RCU);
/* 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_af_set(RS485_GPIO_PORT, GPIO_AF_1, RS485_TX_PIN | RS485_RX_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(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);
/* 配置波特率、数据位、停止位等 */
usart_deinit(RS485_PHY);
@@ -29,10 +29,10 @@ void rs485_init(void) {
usart_receive_config(RS485_PHY, USART_RECEIVE_ENABLE);
usart_transmit_config(RS485_PHY, USART_TRANSMIT_ENABLE);
usart_driver_assertime_config(RS485_PHY, 0x01);
usart_driver_deassertime_config(RS485_PHY, 0x10);
// usart_driver_assertime_config(RS485_PHY, 0x01);
// usart_driver_deassertime_config(RS485_PHY, 0x10);
usart_rs485_driver_enable(RS485_PHY);
// usart_rs485_driver_enable(RS485_PHY);
usart_interrupt_enable(RS485_PHY, USART_INT_RBNE);
// usart_interrupt_enable(RS485_PHY, USART_INT_IDLE);