add mqttclient_iot_explorer demo on tos_evb_aiot board

platform/hal/nxp/mimxrt10xx/src/tos_hal_uart.c

@@ -0,0 +1,130 @@
+#include "tos_k.h"
+#include "tos_hal.h"
+#include "fsl_lpuart.h"
+
+/* Definition of the clock source frequency */
+#define LPUART_CLOCK_SOURCE 80000000UL
+
+__API__ int tos_hal_uart_init(hal_uart_t *uart, hal_uart_port_t port)
+{
+    status_t status;
+    lpuart_config_t config;
+    
+    if (!uart) {
+        return -1;
+    }
+    
+    if (port == HAL_UART_PORT_0) {
+        // not support.
+        return -1;
+    } else if (port == HAL_UART_PORT_1) {
+        uart->private_uart = LPUART1;
+        
+        LPUART_GetDefaultConfig(&config);
+        config.baudRate_Bps = 115200;
+        config.enableTx     = true;
+        config.enableRx     = true;
+        status = LPUART_Init(LPUART1, &config, LPUART_CLOCK_SOURCE);
+        if (status != kStatus_Success) {
+            return -1;
+        }
+        
+         /* Enable RX interrupt. */
+        LPUART_EnableInterrupts(LPUART1, kLPUART_RxDataRegFullInterruptEnable);
+        EnableIRQ(LPUART1_IRQn);
+    } else if (port == HAL_UART_PORT_2) {
+        uart->private_uart = LPUART2;
+        
+        LPUART_GetDefaultConfig(&config);
+        config.baudRate_Bps = 115200;
+        config.enableTx     = true;
+        config.enableRx     = true;
+        status = LPUART_Init(LPUART2, &config, LPUART_CLOCK_SOURCE);
+        if (status != kStatus_Success) {
+            return -1;
+        }
+        
+         /* Enable RX interrupt. */
+        LPUART_EnableInterrupts(LPUART2, kLPUART_RxDataRegFullInterruptEnable);
+        EnableIRQ(LPUART2_IRQn);
+    } else if (port == HAL_UART_PORT_3) {
+        uart->private_uart = LPUART3;
+        
+        LPUART_GetDefaultConfig(&config);
+        config.baudRate_Bps = 115200;
+        config.enableTx     = true;
+        config.enableRx     = true;
+        status = LPUART_Init(LPUART3, &config, LPUART_CLOCK_SOURCE);
+        if (status != kStatus_Success) {
+            return -1;
+        }
+        
+         /* Enable RX interrupt. */
+        LPUART_EnableInterrupts(LPUART3, kLPUART_RxDataRegFullInterruptEnable);
+        EnableIRQ(LPUART3_IRQn);
+    } else if (port == HAL_UART_PORT_4) {
+        uart->private_uart = LPUART4;
+        
+        LPUART_GetDefaultConfig(&config);
+        config.baudRate_Bps = 115200;
+        config.enableTx     = true;
+        config.enableRx     = true;
+        status = LPUART_Init(LPUART4, &config, LPUART_CLOCK_SOURCE);
+        if (status != kStatus_Success) {
+            return -1;
+        }
+        
+         /* Enable RX interrupt. */
+        LPUART_EnableInterrupts(LPUART4, kLPUART_RxDataRegFullInterruptEnable);
+        EnableIRQ(LPUART4_IRQn);
+    }
+
+    return 0;
+}
+
+__API__ int tos_hal_uart_write(hal_uart_t *uart, const uint8_t *buf, size_t size, uint32_t timeout)
+{
+    status_t status;
+    LPUART_Type *base;
+
+    if (!uart || !buf) {
+        return -1;
+    }
+
+    if (!uart->private_uart) {
+        return -1;
+    }
+
+    base = (LPUART_Type *)uart->private_uart;
+
+    status = LPUART_WriteBlocking(base, (uint8_t *)buf, size);
+    if (status != kStatus_Success) {
+        return -1;
+    }
+    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)
+{
+    LPUART_Type *base;
+
+    if (!uart) {
+        return -1;
+    }
+
+    if (!uart->private_uart) {
+        return -1;
+    }
+
+    base = (LPUART_Type *)uart->private_uart;
+
+    LPUART_Deinit(base);
+
+    return 0;
+}
+