hpw421初始版本

2026-06-06 16:49:48 +08:00
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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 "xc6xxx_hal_uart.h"
+
+/*------------------------------------------------------------------------------------
+                                            Macros
+ -------------------------------------------------------------------------------------*/
+
+/*------------------------------------------------------------------------------------
+                                         Global Variables
+ -------------------------------------------------------------------------------------*/
+
+/*------------------------------------------------------------------------------------
+                                            Functions
+ -------------------------------------------------------------------------------------*/
+/**
+ * @brief       uart_demo
+ * @details
+ * @param       void
+ * @retval      void
+ */
+void uart_demo(void)
+{
+    DEBUG("__UART_DEMO__\n");
+
+    uint8_t rxbuff[26];
+    UART_TypeDef *uart_handle = XC_UART2; // XC_UART0;//XC_UART1;//XC_UART2;
+
+    if (uart_handle == XC_UART1) {
+        GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+        GPIO_InitStruct.Mux              = GPIO_Mux0;
+        GPIO_InitStruct.Pull             = GPIO_PULLUP;
+        GPIO_InitStruct.Int              = NOT_INT;
+
+        GPIO_InitStruct.Pin              = GPIO_3;
+        GPIO_InitStruct.Dir              = GPIO_DIR_OUTPUT;
+        GPIO_InitStruct.FunSel           = UART1_TX;
+        GPIO_Init(&GPIO_InitStruct);
+
+        GPIO_InitStruct.Pin    = GPIO_2;
+        GPIO_InitStruct.Dir    = GPIO_DIR_INPUT;
+        GPIO_InitStruct.FunSel = UART1_RX;
+        GPIO_Init(&GPIO_InitStruct);
+
+        UART_InitTypeDef UART_InitStruct    = {0};
+
+        UART_InitStruct.Parity              = UART_PARITY_DISABLE;
+        UART_InitStruct.StopBits            = UART_STOP_1_BITS;
+        UART_InitStruct.WordLength          = UART_DATA_8_BITS;
+        UART_InitStruct.BaudRate            = UART_BAUDRATE_115200;
+        UART_InitStruct.HardwareFlowControl = UART_HWFC_DISABLE;
+
+        UART_Init(uart_handle, &UART_InitStruct);
+    } else if (uart_handle == XC_UART2) {
+        GPIO_InitTypeDef GPIO_InitStruct = {0};
+
+        GPIO_InitStruct.Mux              = GPIO_Mux1;
+        GPIO_InitStruct.Pull             = GPIO_PULLUP;
+        GPIO_InitStruct.Int              = NOT_INT;
+        GPIO_InitStruct.FunSel           = GPIO_Dx;
+
+        GPIO_InitStruct.Pin              = GPIO_32; // uart2 tx
+        GPIO_InitStruct.Dir              = GPIO_DIR_OUTPUT;
+
+        GPIO_Init(&GPIO_InitStruct);
+
+        GPIO_InitStruct.Pin = GPIO_31; // uart2 rx
+        GPIO_InitStruct.Dir = GPIO_DIR_INPUT;
+        GPIO_Init(&GPIO_InitStruct);
+
+        UART_InitTypeDef UART_InitStruct    = {0};
+
+        UART_InitStruct.Parity              = UART_PARITY_DISABLE;
+        UART_InitStruct.StopBits            = UART_STOP_1_BITS;
+        UART_InitStruct.WordLength          = UART_DATA_8_BITS;
+        UART_InitStruct.BaudRate            = UART_BAUDRATE_115200;
+        UART_InitStruct.HardwareFlowControl = UART_HWFC_DISABLE;
+
+        UART_Init(uart_handle, &UART_InitStruct);
+    }
+
+    UART_Enable_RxIT(uart_handle);
+
+    if (uart_handle == XC_UART0) {
+        NVIC_EnableIRQ(UART0_IRQn);
+    } else if (uart_handle == XC_UART1) {
+        NVIC_EnableIRQ(UART1_IRQn);
+    } else if (uart_handle == XC_UART2) {
+        NVIC_EnableIRQ(UART2_IRQn);
+    }
+
+    for (int i = 0; i < 26; i++) {
+        rxbuff[i] = i + 'A';
+    }
+    UART_SendData(uart_handle, rxbuff, 26);
+
+    uint16_t data_len = 0;
+
+    while (1) {
+        data_len = UART_ReceiveData(uart_handle, rxbuff);
+        if (data_len) {
+            UART_SendData(uart_handle, rxbuff, data_len);
+            data_len = 0;
+        }
+    }
+}