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添加RS485支持

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yelvlab
2024-11-28 17:23:59 +08:00
parent 5936f69ec4
commit 70e3e162ae
3 changed files with 12 additions and 6 deletions
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12
src/ultrasonic_driver.c
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@@ -39,11 +39,15 @@ void usart_config(void)
rcu_periph_clock_enable(USART_GPIO_RCU);
rcu_periph_clock_enable(USART_RCU);
gpio_af_set(USARET_GPIO_PORT, GPIO_AF_1, GPIO_PIN_2 | GPIO_PIN_3);
gpio_af_set(USART_GPIO_PORT, GPIO_AF_1, GPIO_PIN_2 | GPIO_PIN_3);
/* configure USART Tx as alternate function push-pull */
gpio_mode_set(USARET_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, USART_TX_PIN | USART_RX_PIN);
gpio_output_options_set(USARET_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, USART_TX_PIN | USART_RX_PIN);
/* configure USART Tx&Rx as alternate function push-pull */
gpio_mode_set(USART_GPIO_PORT, GPIO_MODE_AF, GPIO_PUPD_PULLUP, USART_TX_PIN | USART_RX_PIN);
gpio_output_options_set(USART_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_10MHZ, USART_TX_PIN | USART_RX_PIN);
/* configure RS485 EN Pin */
gpio_mode_set(USART_GPIO_PORT, GPIO_MODE_OUTPUT, GPIO_PUPD_PULLUP, USART_EN_PIN);
gpio_output_options_set(USART_GPIO_PORT, GPIO_OTYPE_PP, GPIO_OSPEED_50MHZ, USART_EN_PIN);
/* USART configure */
usart_deinit(USART0_PHY);