V1.0

2026-06-09 16:39:17 +08:00
commit 41a602f89c
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+/*!
+ * \file      uart.c
+ *
+ * \brief     Target uart implementation
+ *
+ * \copyright Revised BSD License, see section \ref LICENSE.
+ *
+ * \code
+ *
+ *            _  __ _       ________    _
+ *           | |/ /(_)___  / ____/ /_  (_)___
+ *           |   // / __ \/ /   / __ \/ / __ \
+ *          /   |/ / / / / /___/ / / / / /_/ /
+ *         /_/|_/_/_/ /_/\____/_/ /_/_/ .___/
+ *                                   /_/
+ *           (C) 2022-2025 XinChip
+ *
+ * \endcode
+ *
+ * \author     ( XinChip ) Alex-J
+ *
+ * \author     ( XinChip )
+ */
+
+/*-----------------------------------------------------------------------------------
+                                       INCLUDE HEADE FILES
+ ------------------------------------------------------------------------------------*/
+#include "uart.h"
+#include "xc_drv_uart.h"
+
+/*------------------------------------------------------------------------------------
+                                            Macros
+ -------------------------------------------------------------------------------------*/
+
+/*------------------------------------------------------------------------------------
+                                         Global Variables
+ -------------------------------------------------------------------------------------*/
+typedef struct
+{
+    uint8_t r_buff[26];
+    uint8_t w_buff[26];
+    uint8_t r_len;
+    bool rx_done;
+} uart_user_t;
+
+uart_user_t uart_user_ctl;
+
+/*------------------------------------------------------------------------------------
+                                            Functions
+ -------------------------------------------------------------------------------------*/
+void uart_receive_cb(uint8_t *buff, uint16_t len)
+{
+    static uint8_t cnt = 0;
+
+    for (int i = 0; i < len; i++) {
+        uart_user_ctl.r_buff[cnt++] = buff[i];
+        uart_user_ctl.r_len++;
+    }
+
+    if (cnt == sizeof(uart_user_ctl.r_buff)) {
+
+        cnt                   = 0;
+        uart_user_ctl.rx_done = true;
+    }
+}
+
+/**
+ * @brief       uart_demo
+ * @details
+ * @param       void
+ * @retval      void
+ */
+void uart_demo(void)
+{
+    DEBUG("__UART_DEMO__\n");
+
+    uint8_t uart_handle = UART0_IDX;
+
+    if (uart_handle == UART0_IDX) {
+        GPIO_InitCfg_t gpio_cfg = {0};
+
+        gpio_cfg.Mux            = GPIO_Mux0;
+        gpio_cfg.Pull           = GPIO_PULLUP;
+        gpio_cfg.Int            = NOT_INT;
+
+        gpio_cfg.Pin            = GPIO_18;
+        gpio_cfg.Dir            = GPIO_DIR_OUTPUT;
+        gpio_cfg.FunSel         = UART0_TX;
+        xc_gpio_init(&gpio_cfg);
+
+        gpio_cfg.Pin    = GPIO_19;
+        gpio_cfg.Dir    = GPIO_DIR_INPUT;
+        gpio_cfg.FunSel = UART0_RX;
+        xc_gpio_init(&gpio_cfg);
+
+        UART_InitCfg_t uart_cfg      = {0};
+
+        uart_cfg.Parity              = UART_PARITY_DISABLE;
+        uart_cfg.StopBits            = UART_TCR_STOP_1BITS;
+        uart_cfg.WordLength          = UART_DATA_8_BITS;
+        uart_cfg.BaudRate            = UART_BAUDRATE_115200;
+        uart_cfg.HardwareFlowControl = UART_HWFC_DISABLE;
+
+        xc_uart_init(uart_handle, &uart_cfg);
+
+    } else if (uart_handle == UART1_IDX) {
+        GPIO_InitCfg_t gpio_cfg = {0};
+
+        gpio_cfg.Mux            = GPIO_Mux0;
+        gpio_cfg.Pull           = GPIO_PULLUP;
+        gpio_cfg.Int            = NOT_INT;
+
+        gpio_cfg.Pin            = GPIO_3;
+        gpio_cfg.Dir            = GPIO_DIR_OUTPUT;
+        gpio_cfg.FunSel         = UART1_TX;
+        xc_gpio_init(&gpio_cfg);
+
+        gpio_cfg.Pin    = GPIO_2;
+        gpio_cfg.Dir    = GPIO_DIR_INPUT;
+        gpio_cfg.FunSel = UART1_RX;
+        xc_gpio_init(&gpio_cfg);
+
+        UART_InitCfg_t uart_cfg      = {0};
+
+        uart_cfg.Parity              = UART_PARITY_DISABLE;
+        uart_cfg.StopBits            = UART_TCR_STOP_1BITS;
+        uart_cfg.WordLength          = UART_DATA_8_BITS;
+        uart_cfg.BaudRate            = UART_BAUDRATE_115200;
+        uart_cfg.HardwareFlowControl = UART_HWFC_DISABLE;
+
+        xc_uart_init(uart_handle, &uart_cfg);
+    } else if (uart_handle == UART2_IDX) {
+        GPIO_InitCfg_t gpio_cfg = {0};
+
+        gpio_cfg.Mux            = GPIO_Mux1;
+        gpio_cfg.Pull           = GPIO_PULLUP;
+        gpio_cfg.Int            = NOT_INT;
+        gpio_cfg.FunSel         = GPIO_Dx;
+
+        gpio_cfg.Pin            = GPIO_32; // uart2 tx
+        gpio_cfg.Dir            = GPIO_DIR_OUTPUT;
+
+        xc_gpio_init(&gpio_cfg);
+
+        gpio_cfg.Pin = GPIO_31; // uart2 rx
+        gpio_cfg.Dir = GPIO_DIR_INPUT;
+        xc_gpio_init(&gpio_cfg);
+
+        UART_InitCfg_t uart_cfg      = {0};
+
+        uart_cfg.Parity              = UART_PARITY_DISABLE;
+        uart_cfg.StopBits            = UART_STOP_1_BITS;
+        uart_cfg.WordLength          = UART_DATA_8_BITS;
+        uart_cfg.BaudRate            = UART_BAUDRATE_115200;
+        uart_cfg.HardwareFlowControl = UART_HWFC_DISABLE;
+
+        xc_uart_init(uart_handle, &uart_cfg);
+    }
+
+    xc_uart_register_receive_cb(uart_receive_cb);
+
+    xc_uart_enable_rx_it(uart_handle);
+
+    if (uart_handle == UART0_IDX) {
+        NVIC_EnableIRQ(UART0_IRQn);
+    } else if (uart_handle == UART1_IDX) {
+        NVIC_EnableIRQ(UART1_IRQn);
+    } else if (uart_handle == UART2_IDX) {
+        NVIC_EnableIRQ(UART2_IRQn);
+    }
+    delay_us(20);
+    for (int i = 0; i < 26; i++) {
+        uart_user_ctl.w_buff[i] = i + 'A';
+    }
+    xc_uart_send_data(uart_handle, uart_user_ctl.w_buff, 26);
+
+    while (1) {
+        if (uart_user_ctl.rx_done == true) {
+//            printf("\nrun\n");
+            xc_uart_send_data(uart_handle, uart_user_ctl.r_buff, uart_user_ctl.r_len);
+            uart_user_ctl.rx_done = false;
+            uart_user_ctl.r_len   = 0;
+        }
+    }
+}