moyuhai
186 lines
5.6 KiB
C
186 lines
5.6 KiB
C
/*!
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* \file uart.c
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*
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* \brief Target uart implementation
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*
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* \copyright Revised BSD License, see section \ref LICENSE.
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*
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* \code
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*
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* _ __ _ ________ _
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* | |/ /(_)___ / ____/ /_ (_)___
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* | // / __ \/ / / __ \/ / __ \
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* / |/ / / / / /___/ / / / / /_/ /
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* /_/|_/_/_/ /_/\____/_/ /_/_/ .___/
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* /_/
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* (C) 2022-2025 XinChip
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*
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* \endcode
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*
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* \author ( XinChip ) Alex-J
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*
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* \author ( XinChip )
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*/
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/*-----------------------------------------------------------------------------------
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INCLUDE HEADE FILES
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------------------------------------------------------------------------------------*/
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#include "uart.h"
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#include "xc_drv_uart.h"
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/*------------------------------------------------------------------------------------
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Macros
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-------------------------------------------------------------------------------------*/
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/*------------------------------------------------------------------------------------
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Global Variables
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-------------------------------------------------------------------------------------*/
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typedef struct
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{
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uint8_t r_buff[26];
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uint8_t w_buff[26];
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uint8_t r_len;
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bool rx_done;
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} uart_user_t;
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uart_user_t uart_user_ctl;
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/*------------------------------------------------------------------------------------
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Functions
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-------------------------------------------------------------------------------------*/
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void uart_receive_cb(uint8_t *buff, uint16_t len)
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{
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static uint8_t cnt = 0;
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for (int i = 0; i < len; i++) {
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uart_user_ctl.r_buff[cnt++] = buff[i];
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uart_user_ctl.r_len++;
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}
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if (cnt == sizeof(uart_user_ctl.r_buff)) {
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cnt = 0;
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uart_user_ctl.rx_done = true;
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}
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}
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/**
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* @brief uart_demo
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* @details
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* @param void
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* @retval void
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*/
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void uart_demo(void)
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{
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DEBUG("__UART_DEMO__\n");
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uint8_t uart_handle = UART0_IDX;
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if (uart_handle == UART0_IDX) {
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GPIO_InitCfg_t gpio_cfg = {0};
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gpio_cfg.Mux = GPIO_Mux0;
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gpio_cfg.Pull = GPIO_PULLUP;
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gpio_cfg.Int = NOT_INT;
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gpio_cfg.Pin = GPIO_18;
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gpio_cfg.Dir = GPIO_DIR_OUTPUT;
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gpio_cfg.FunSel = UART0_TX;
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xc_gpio_init(&gpio_cfg);
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gpio_cfg.Pin = GPIO_19;
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gpio_cfg.Dir = GPIO_DIR_INPUT;
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gpio_cfg.FunSel = UART0_RX;
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xc_gpio_init(&gpio_cfg);
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UART_InitCfg_t uart_cfg = {0};
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uart_cfg.Parity = UART_PARITY_DISABLE;
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uart_cfg.StopBits = UART_TCR_STOP_1BITS;
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uart_cfg.WordLength = UART_DATA_8_BITS;
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uart_cfg.BaudRate = UART_BAUDRATE_115200;
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uart_cfg.HardwareFlowControl = UART_HWFC_DISABLE;
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xc_uart_init(uart_handle, &uart_cfg);
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} else if (uart_handle == UART1_IDX) {
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GPIO_InitCfg_t gpio_cfg = {0};
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gpio_cfg.Mux = GPIO_Mux0;
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gpio_cfg.Pull = GPIO_PULLUP;
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gpio_cfg.Int = NOT_INT;
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gpio_cfg.Pin = GPIO_3;
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gpio_cfg.Dir = GPIO_DIR_OUTPUT;
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gpio_cfg.FunSel = UART1_TX;
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xc_gpio_init(&gpio_cfg);
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gpio_cfg.Pin = GPIO_2;
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gpio_cfg.Dir = GPIO_DIR_INPUT;
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gpio_cfg.FunSel = UART1_RX;
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xc_gpio_init(&gpio_cfg);
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UART_InitCfg_t uart_cfg = {0};
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uart_cfg.Parity = UART_PARITY_DISABLE;
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uart_cfg.StopBits = UART_TCR_STOP_1BITS;
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uart_cfg.WordLength = UART_DATA_8_BITS;
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uart_cfg.BaudRate = UART_BAUDRATE_115200;
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uart_cfg.HardwareFlowControl = UART_HWFC_DISABLE;
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xc_uart_init(uart_handle, &uart_cfg);
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} else if (uart_handle == UART2_IDX) {
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GPIO_InitCfg_t gpio_cfg = {0};
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gpio_cfg.Mux = GPIO_Mux1;
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gpio_cfg.Pull = GPIO_PULLUP;
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gpio_cfg.Int = NOT_INT;
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gpio_cfg.FunSel = GPIO_Dx;
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gpio_cfg.Pin = GPIO_32; // uart2 tx
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gpio_cfg.Dir = GPIO_DIR_OUTPUT;
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xc_gpio_init(&gpio_cfg);
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gpio_cfg.Pin = GPIO_31; // uart2 rx
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gpio_cfg.Dir = GPIO_DIR_INPUT;
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xc_gpio_init(&gpio_cfg);
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UART_InitCfg_t uart_cfg = {0};
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uart_cfg.Parity = UART_PARITY_DISABLE;
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uart_cfg.StopBits = UART_STOP_1_BITS;
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uart_cfg.WordLength = UART_DATA_8_BITS;
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uart_cfg.BaudRate = UART_BAUDRATE_115200;
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uart_cfg.HardwareFlowControl = UART_HWFC_DISABLE;
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xc_uart_init(uart_handle, &uart_cfg);
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}
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xc_uart_register_receive_cb(uart_receive_cb);
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xc_uart_enable_rx_it(uart_handle);
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if (uart_handle == UART0_IDX) {
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NVIC_EnableIRQ(UART0_IRQn);
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} else if (uart_handle == UART1_IDX) {
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NVIC_EnableIRQ(UART1_IRQn);
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} else if (uart_handle == UART2_IDX) {
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NVIC_EnableIRQ(UART2_IRQn);
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}
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delay_us(20);
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for (int i = 0; i < 26; i++) {
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uart_user_ctl.w_buff[i] = i + 'A';
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}
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xc_uart_send_data(uart_handle, uart_user_ctl.w_buff, 26);
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while (1) {
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if (uart_user_ctl.rx_done == true) {
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// printf("\nrun\n");
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xc_uart_send_data(uart_handle, uart_user_ctl.r_buff, uart_user_ctl.r_len);
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uart_user_ctl.rx_done = false;
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uart_user_ctl.r_len = 0;
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}
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}
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}
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