add esp8266 example

platform/hal/gd/gd32vf1xx/src/tos_hal_uart.c

@@ -0,0 +1,81 @@
+#include "tos_k.h"
+#include "tos_hal.h"
+#include "gd32vf103.h"
+#include "usart.h"
+
+typedef struct __UART_HandleTypeDef {
+	hal_uart_port_t port;
+} UART_HandleTypeDef;
+
+
+UART_HandleTypeDef huart0 = { USART0 };
+UART_HandleTypeDef huart1 = { USART1 };
+UART_HandleTypeDef huart2 = { USART2 };
+
+__API__ int tos_hal_uart_init(hal_uart_t *uart, hal_uart_port_t port)
+{
+    if (!uart) {
+        return -1;
+    }
+
+    if (port == HAL_UART_PORT_0) {
+    	usart0_init(115200);
+    } else if (port == HAL_UART_PORT_1) {
+    	usart1_init(115200);
+    } else if (port == HAL_UART_PORT_2) {
+    	usart2_init(115200);
+    } else {
+    	return -1;
+    }
+
+    return 0;
+}
+
+__API__ int tos_hal_uart_write(hal_uart_t *uart, const uint8_t *buf, size_t size, uint32_t timeout)
+{
+    UART_HandleTypeDef *uart_handle;
+
+    if (!uart || !buf) {
+        return -1;
+    }
+
+    if (!uart->private_uart) {
+        return -1;
+    }
+
+    uart_handle = (UART_HandleTypeDef *)uart->private_uart;
+
+    for(size_t i=0; i<size; i++) {
+    	usart_data_transmit(uart_handle->port, buf[i]);
+    }
+
+
+    return 0;
+}
+
+__API__ int tos_hal_uart_read(hal_uart_t *uart, const uint8_t *buf, size_t size, uint32_t timeout)
+{
+    return 0;
+}
+
+__API__ int tos_hal_uart_deinit(hal_uart_t *uart)
+{
+    UART_HandleTypeDef *uart_handle;
+
+    if (!uart) {
+        return -1;
+    }
+
+    if (!uart->private_uart) {
+        return -1;
+    }
+
+    uart_handle = (UART_HandleTypeDef *)uart->private_uart;
+
+
+    usart_deinit(uart_handle->port);
+
+
+    return 0;
+}
+