Diff: targets/TARGET_WIZNET/TARGET_W7500x/serial_api.c

Revision:

149:156823d33999

Parent:

144:ef7eb2e8f9f7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/TARGET_WIZNET/TARGET_W7500x/serial_api.c	Fri Oct 28 11:17:30 2016 +0100
@@ -0,0 +1,413 @@
+/* mbed Microcontroller Library 
+ *******************************************************************************
+ * Copyright (c) 2015 WIZnet Co.,Ltd. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. Neither the name of ARM Limited nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *******************************************************************************
+ */
+ 
+#include "mbed_assert.h"
+#include "serial_api.h"
+
+#if DEVICE_SERIAL
+
+#include "cmsis.h"
+#include "pinmap.h"
+#include <string.h>
+#include "PeripheralPins.h"
+#include "W7500x_uart.h"
+
+#define UART_NUM (3)
+
+static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
+
+
+static uart_irq_handler irq_handler;
+static UART_TypeDef *UART;
+
+
+UART_InitTypeDef UART_InitStructure;
+
+int stdio_uart_inited = 0;
+serial_t stdio_uart;
+
+static void init_uart(serial_t *obj)
+{
+    if(obj->index == 2)        // For UART2, It is simple UART.
+    {
+        SystemCoreClockUpdate();
+        //S_UART_Init(obj->baudrate);
+        S_UART_SetCTRL((S_UART_CTRL_RX_EN|S_UART_CTRL_TX_EN), DISABLE);
+        S_UART_SetBaud(obj->baudrate);
+
+        if(obj->pin_rx == NC)
+        {
+            S_UART_SetCTRL(S_UART_CTRL_TX_EN, ENABLE);
+        }
+        else if(obj->pin_tx == NC)
+        {
+            S_UART_SetCTRL(S_UART_CTRL_RX_EN, ENABLE);
+        }
+        else
+        {
+            S_UART_SetCTRL((S_UART_CTRL_TX_EN|S_UART_CTRL_RX_EN),ENABLE);
+        }
+    }
+    else                    // For UART0 and UART1.
+    {
+        UART = (UART_TypeDef *)(obj->uart);
+        UART_InitStructure.UART_BaudRate            = obj->baudrate;
+        UART_InitStructure.UART_WordLength          = obj->databits;
+        UART_InitStructure.UART_StopBits            = obj->stopbits;
+        UART_InitStructure.UART_Parity              = obj->parity;
+        UART_InitStructure.UART_HardwareFlowControl = UART_HardwareFlowControl_None;
+
+
+        if (obj->pin_rx == NC) {
+            UART_InitStructure.UART_Mode = UART_Mode_Tx;
+        } else if (obj->pin_tx == NC) {
+            UART_InitStructure.UART_Mode = UART_Mode_Rx;
+        } else {
+            UART_InitStructure.UART_Mode = (UART_Mode_Rx | UART_Mode_Tx);
+        }
+
+        UART_Init(UART,&UART_InitStructure);
+    }
+}
+
+void serial_init(serial_t *obj, PinName tx, PinName rx)
+{
+    // Determine the UART to use (UART_1, UART_2, ...)
+    UARTName uart_tx = (UARTName)pinmap_peripheral(tx, PinMap_UART_TX);
+    UARTName uart_rx = (UARTName)pinmap_peripheral(rx, PinMap_UART_RX);
+
+    // Get the peripheral name (UART_1, UART_2, ...) from the pin and assign it to the object
+    obj->uart = (UARTName)pinmap_merge(uart_tx, uart_rx);
+
+    MBED_ASSERT(obj->uart != (UARTName)NC);
+
+    // Enable USART clock
+    if (obj->uart == UART_0) {
+        obj->index = 0;
+    }
+
+    if (obj->uart == UART_1) {
+        obj->index = 1;
+    }
+
+    if (obj->uart == UART_2) {
+    	obj->index = 2;
+    }
+
+    // Configure the UART pins
+    pinmap_pinout(tx, PinMap_UART_TX);
+    pinmap_pinout(rx, PinMap_UART_RX);
+    if (tx != NC) {
+        pin_mode(tx, PullUp);
+    }
+    if (rx != NC) {
+        pin_mode(rx, PullUp);
+    }
+
+    // Configure UART
+    obj->baudrate = 9600;
+    obj->databits = UART_WordLength_8b;
+    obj->stopbits = UART_StopBits_1;
+    obj->parity   = UART_Parity_No;
+
+    obj->pin_tx = tx;
+    obj->pin_rx = rx;
+
+
+    init_uart(obj);
+
+    // For stdio management
+    if (obj->uart == STDIO_UART) {
+        stdio_uart_inited = 1;
+        memcpy(&stdio_uart, obj, sizeof(serial_t));
+    }
+}
+
+void serial_free(serial_t *obj)
+{
+    // Reset UART and disable clock
+    if (obj->uart == UART_0) {
+    }
+
+    if (obj->uart == UART_1) {
+    }
+    if (obj->uart == UART_2) {
+    }
+
+    serial_irq_ids[obj->index] = 0;
+}
+
+void serial_baud(serial_t *obj, int baudrate)
+{
+    obj->baudrate = baudrate;
+    init_uart(obj);
+}
+
+void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_bits)
+{
+    if (data_bits == 7) {
+        obj->databits = UART_WordLength_7b;
+    } else {
+        obj->databits = UART_WordLength_8b;
+    }
+
+    switch (parity) {
+        case ParityOdd:
+        case ParityForced0:
+            obj->parity = UART_Parity_Odd;
+            break;
+        case ParityEven:
+        case ParityForced1:
+            obj->parity = UART_Parity_Even;
+            break;
+        default: // ParityNone
+            obj->parity = UART_Parity_No;
+            break;
+    }
+
+    if (stop_bits == 2) {
+        obj->stopbits = UART_StopBits_2;
+    } else {
+        obj->stopbits = UART_StopBits_1;
+    }
+
+    init_uart(obj);
+}
+
+/******************************************************************************
+ * INTERRUPTS HANDLING
+ ******************************************************************************/
+
+static void uart_irq(UARTName name, int id)
+{
+    UART = (UART_TypeDef *)name;
+    if (serial_irq_ids[id] != 0) {
+       if( UART_GetITStatus(UART,UART_IT_FLAG_TXI) != RESET ){
+           irq_handler(serial_irq_ids[id], TxIrq);
+           UART_ClearITPendingBit(UART,UART_IT_FLAG_TXI);
+        }
+       if( UART_GetITStatus(UART,UART_IT_FLAG_RXI) != RESET ){
+           irq_handler(serial_irq_ids[id], RxIrq);
+       }
+    }
+}
+
+static void uart2_irq()
+{
+    if(serial_irq_ids[2] != 0){
+        if( S_UART_GetITStatus(S_UART_INTSTATUS_TXI) != RESET ){
+            S_UART_ClearITPendingBit(S_UART_INTSTATUS_TXI);
+            irq_handler(serial_irq_ids[2], TxIrq);
+        }
+        if( S_UART_GetITStatus(S_UART_INTSTATUS_RXI) != RESET ) {
+            S_UART_ClearITPendingBit(S_UART_INTSTATUS_RXI);
+            irq_handler(serial_irq_ids[2], RxIrq);
+        }
+    }
+}
+
+#ifdef __cplusplus
+extern "C"{
+#endif
+void UART0_Handler()
+{
+    uart_irq(UART_0, 0);
+}
+
+void UART1_Handler()
+{
+    uart_irq(UART_1, 1);
+}
+
+void UART2_Handler()
+{
+    uart2_irq();
+}
+#ifdef __cplusplus
+}
+#endif
+
+
+void serial_irq_handler(serial_t *obj, uart_irq_handler handler, uint32_t id)
+{
+    irq_handler = handler;
+    serial_irq_ids[obj->index] = id;
+}
+
+void serial_irq_set(serial_t *obj, SerialIrq irq, uint32_t enable)
+{
+    IRQn_Type irq_n = (IRQn_Type)0;
+
+
+    if (obj->uart == UART_2)
+    {
+        irq_n = UART2_IRQn;
+
+        if (enable){
+            if (irq == RxIrq){
+                S_UART_ITConfig(S_UART_CTRL_RXI,ENABLE);
+            } else {
+                S_UART_ITConfig(S_UART_CTRL_TXI,ENABLE);
+            }
+            NVIC_ClearPendingIRQ(irq_n);
+            NVIC_EnableIRQ(irq_n);
+        } else { // disable
+            S_UART_ITConfig((S_UART_CTRL_RXI|S_UART_CTRL_TXI),DISABLE);
+            NVIC_DisableIRQ(irq_n);
+        }
+    }
+    else
+    {
+        UART = (UART_TypeDef *)(obj->uart);
+        
+        if (obj->uart == UART_0) {
+            irq_n = UART0_IRQn;
+        }
+
+        if (obj->uart == UART_1) {
+            irq_n = UART1_IRQn;
+        }
+
+        if (enable) {
+            if (irq == RxIrq) {
+                UART_ITConfig(UART,UART_IT_FLAG_RXI,ENABLE);
+            } else { // TxIrq
+                UART_ITConfig(UART,UART_IT_FLAG_TXI,ENABLE);
+            }
+
+            NVIC_ClearPendingIRQ(irq_n);
+            NVIC_EnableIRQ(irq_n);
+        } else { // disable
+            UART_ITConfig(UART,(UART_IT_FLAG_RXI|UART_IT_FLAG_TXI),DISABLE);
+            NVIC_DisableIRQ(irq_n);
+        }
+    }
+}
+
+/******************************************************************************
+ * READ/WRITE
+ ******************************************************************************/
+
+int serial_getc(serial_t *obj)
+{
+    if (obj->uart == UART_2)
+    {
+        S_UART_TypeDef *uart = (S_UART_TypeDef *)(obj->uart);
+
+        while( (uart->STATE & S_UART_STATE_RX_BUF_FULL) == 0 );
+        return (uint16_t)(uart->DATA);
+    }
+    else
+    {
+        UART_TypeDef *uart = (UART_TypeDef *)(obj->uart);
+        while(uart->FR & UART_FR_RXFE);
+
+        return (uart->DR & 0xFF);
+    }
+}
+
+void serial_putc(serial_t *obj, int c)
+{
+    if (obj->uart == UART_2)
+    {
+        S_UART_TypeDef *uart = (S_UART_TypeDef *)(obj->uart);
+
+        while(uart->STATE & S_UART_STATE_TX_BUF_FULL);
+        uart->DATA = (uint32_t)(c & (uint16_t)0xFF);
+    }
+    else
+    {
+        UART_TypeDef *uart = (UART_TypeDef *)(obj->uart);
+
+        uart->DR = (uint32_t)(c & (uint16_t)0xFF);
+        while(uart->FR & UART_FR_BUSY);
+    }
+}
+
+int serial_readable(serial_t *obj)
+{
+    int status;
+
+    if (obj->uart == UART_2)
+    {
+        S_UART_TypeDef *uart = (S_UART_TypeDef *)(obj->uart);
+        status = ((uart->STATE & S_UART_STATE_RX_BUF_FULL) ? 1 : 0);
+    }
+    else
+    {
+        UART_TypeDef *uart = (UART_TypeDef *)(obj->uart);
+        // Check if data is received
+        status = ((uart->FR & UART_FR_RXFE) ? 0: 1);
+    }
+
+    return status;
+}
+
+int serial_writable(serial_t *obj)
+{
+    int status;
+
+    if (obj->uart == UART_2)
+    {
+        S_UART_TypeDef *uart = (S_UART_TypeDef *)(obj->uart);
+        status = ((uart->STATE & S_UART_STATE_TX_BUF_FULL) ? 0 : 1);
+    }
+    else
+    {
+        UART_TypeDef *uart = (UART_TypeDef *)(obj->uart);
+        // Check if data is transmitted
+        status = ((uart->FR & UART_FR_BUSY) ? 0: 1);
+    }
+    return status;
+}
+
+void serial_clear(serial_t *obj)
+{
+//    UartHandle.Instance = (USART_TypeDef *)(obj->uart);
+//    __HAL_UART_CLEAR_IT(&UartHandle, UART_FLAG_TC);
+//    __HAL_UART_SEND_REQ(&UartHandle, UART_RXDATA_FLUSH_REQUEST);
+}
+
+void serial_pinout_tx(PinName tx)
+{
+    //pinmap_pinout(tx, PinMap_UART_TX);
+}
+
+void serial_break_set(serial_t *obj)
+{
+    // [TODO]
+}
+
+void serial_break_clear(serial_t *obj)
+{
+    // [TODO]
+}
+
+#endif