Diff: targets/hal/TARGET_STM/TARGET_NZ32ST1L/serial_api.c

Revision:

569:18c5cf67e74d

Parent:

568:08b2e7b6bab9

Child:

570:e6ed7264c56c

--- a/targets/hal/TARGET_STM/TARGET_NZ32ST1L/serial_api.c	Tue Jun 16 07:30:08 2015 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,344 +0,0 @@
-/* mbed Microcontroller Library
- *******************************************************************************
- * Copyright (c) 2015, STMicroelectronics
- * 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 STMicroelectronics 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"
-
-#define UART_NUM (3)
-
-static uint32_t serial_irq_ids[UART_NUM] = {0, 0, 0};
-
-static uart_irq_handler irq_handler;
-
-UART_HandleTypeDef UartHandle;
-
-int stdio_uart_inited = 0;
-serial_t stdio_uart;
-
-static void init_uart(serial_t *obj)
-{
-    UartHandle.Instance = (USART_TypeDef *)(obj->uart);
-
-    UartHandle.Init.BaudRate   = obj->baudrate;
-    UartHandle.Init.WordLength = obj->databits;
-    UartHandle.Init.StopBits   = obj->stopbits;
-    UartHandle.Init.Parity     = obj->parity;
-    UartHandle.Init.HwFlowCtl  = UART_HWCONTROL_NONE;
-
-    if (obj->pin_rx == NC) {
-        UartHandle.Init.Mode = UART_MODE_TX;
-    } else if (obj->pin_tx == NC) {
-        UartHandle.Init.Mode = UART_MODE_RX;
-    } else {
-        UartHandle.Init.Mode = UART_MODE_TX_RX;
-    }
-
-    HAL_UART_Init(&UartHandle);
-}
-
-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 UART clock
-    if (obj->uart == UART_1) {
-        __USART1_CLK_ENABLE();
-        obj->index = 0;
-    }
-
-    if (obj->uart == UART_2) {
-        __USART2_CLK_ENABLE();
-        obj->index = 1;
-    }
-
-    if (obj->uart == UART_3) {
-        __USART3_CLK_ENABLE();
-        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
-#if defined  (MX_DEFAULT_SERIAL_BAUD)
-    obj->baudrate = MX_DEFAULT_SERIAL_BAUD;
-#else
-    obj->baudrate = 9600;
-#endif
-    obj->databits = UART_WORDLENGTH_8B;
-    obj->stopbits = UART_STOPBITS_1;
-    obj->parity   = UART_PARITY_NONE;
-    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_1) {
-        __USART1_FORCE_RESET();
-        __USART1_RELEASE_RESET();
-        __USART1_CLK_DISABLE();
-    }
-
-    if (obj->uart == UART_2) {
-        __USART2_FORCE_RESET();
-        __USART2_RELEASE_RESET();
-        __USART2_CLK_DISABLE();
-    }
-
-    if (obj->uart == UART_3) {
-        __USART3_FORCE_RESET();
-        __USART3_RELEASE_RESET();
-        __USART3_CLK_DISABLE();
-    }
-
-    // Configure GPIOs
-    pin_function(obj->pin_tx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
-    pin_function(obj->pin_rx, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0));
-
-    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 == 9) {
-        obj->databits = UART_WORDLENGTH_9B;
-    } 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_NONE;
-            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)
-{
-    UartHandle.Instance = (USART_TypeDef *)name;
-    if (serial_irq_ids[id] != 0) {
-        if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TC) != RESET) {
-            irq_handler(serial_irq_ids[id], TxIrq);
-            __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TC);
-        }
-        if (__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) {
-            irq_handler(serial_irq_ids[id], RxIrq);
-            __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
-        }
-    }
-}
-
-static void uart1_irq(void)
-{
-    uart_irq(UART_1, 0);
-}
-
-static void uart2_irq(void)
-{
-    uart_irq(UART_2, 1);
-}
-
-static void uart3_irq(void)
-{
-    uart_irq(UART_3, 2);
-}
-
-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;
-    uint32_t vector = 0;
-
-    UartHandle.Instance = (USART_TypeDef *)(obj->uart);
-
-    if (obj->uart == UART_1) {
-        irq_n = USART1_IRQn;
-        vector = (uint32_t)&uart1_irq;
-    }
-
-    if (obj->uart == UART_2) {
-        irq_n = USART2_IRQn;
-        vector = (uint32_t)&uart2_irq;
-    }
-
-    if (obj->uart == UART_3) {
-        irq_n = USART3_IRQn;
-        vector = (uint32_t)&uart3_irq;
-    }
-
-    if (enable) {
-
-        if (irq == RxIrq) {
-            __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_RXNE);
-        } else { // TxIrq
-            __HAL_UART_ENABLE_IT(&UartHandle, UART_IT_TC);
-        }
-
-        NVIC_SetVector(irq_n, vector);
-        NVIC_EnableIRQ(irq_n);
-
-    } else { // disable
-
-        int all_disabled = 0;
-
-        if (irq == RxIrq) {
-            __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_RXNE);
-            // Check if TxIrq is disabled too
-            if ((UartHandle.Instance->CR1 & USART_CR1_TXEIE) == 0) all_disabled = 1;
-        } else { // TxIrq
-            __HAL_UART_DISABLE_IT(&UartHandle, UART_IT_TXE);
-            // Check if RxIrq is disabled too
-            if ((UartHandle.Instance->CR1 & USART_CR1_RXNEIE) == 0) all_disabled = 1;
-        }
-
-        if (all_disabled) NVIC_DisableIRQ(irq_n);
-
-    }
-}
-
-/******************************************************************************
- * READ/WRITE
- ******************************************************************************/
-
-int serial_getc(serial_t *obj)
-{
-    USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
-    while (!serial_readable(obj));
-    return (int)(uart->DR & 0xFF);
-}
-
-void serial_putc(serial_t *obj, int c)
-{
-    USART_TypeDef *uart = (USART_TypeDef *)(obj->uart);
-    while (!serial_writable(obj));
-    uart->DR = (uint32_t)(c & 0xFF);
-}
-
-int serial_readable(serial_t *obj)
-{
-    int status;
-    UartHandle.Instance = (USART_TypeDef *)(obj->uart);
-    // Check if data is received
-    status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_RXNE) != RESET) ? 1 : 0);
-    return status;
-}
-
-int serial_writable(serial_t *obj)
-{
-    int status;
-    UartHandle.Instance = (USART_TypeDef *)(obj->uart);
-    // Check if data is transmitted
-    status = ((__HAL_UART_GET_FLAG(&UartHandle, UART_FLAG_TXE) != RESET) ? 1 : 0);
-    return status;
-}
-
-void serial_clear(serial_t *obj)
-{
-    UartHandle.Instance = (USART_TypeDef *)(obj->uart);
-    __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_TXE);
-    __HAL_UART_CLEAR_FLAG(&UartHandle, UART_FLAG_RXNE);
-}
-
-void serial_pinout_tx(PinName tx)
-{
-    pinmap_pinout(tx, PinMap_UART_TX);
-}
-
-void serial_break_set(serial_t *obj)
-{
-    UartHandle.Instance = (USART_TypeDef *)(obj->uart);
-    HAL_LIN_SendBreak(&UartHandle);
-}
-
-void serial_break_clear(serial_t *obj)
-{
-}
-
-#endif