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/*
ChibiOS - Copyright (C) 2006..2016 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/**
* @file hal_uart_lld.c
* @brief PLATFORM UART subsystem low level driver source.
*
* @addtogroup UART
* @{
*/
#include "hal.h"
#if (HAL_USE_UART == TRUE) || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported variables. */
/*===========================================================================*/
/**
* @brief UART1 driver identifier.
*/
#if (PLATFORM_UART_USE_UART1 == TRUE) || defined(__DOXYGEN__)
UARTDriver UARTD1;
#endif
/*===========================================================================*/
/* Driver local variables and types. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/**
* @brief Low level UART driver initialization.
*
* @notapi
*/
void uart_lld_init(void) {
#if PLATFORM_UART_USE_UART1 == TRUE
/* Driver initialization.*/
uartObjectInit(&UARTD1);
#endif
}
/**
* @brief Configures and activates the UART peripheral.
*
* @param[in] uartp pointer to the @p UARTDriver object
*
* @notapi
*/
void uart_lld_start(UARTDriver *uartp) {
if (uartp->state == UART_STOP) {
/* Enables the peripheral.*/
#if PLATFORM_UART_USE_UART1 == TRUE
if (&UARTD1 == uartp) {
}
#endif
}
/* Configures the peripheral.*/
}
/**
* @brief Deactivates the UART peripheral.
*
* @param[in] uartp pointer to the @p UARTDriver object
*
* @notapi
*/
void uart_lld_stop(UARTDriver *uartp) {
if (uartp->state == UART_READY) {
/* Resets the peripheral.*/
/* Disables the peripheral.*/
#if PLATFORM_UART_USE_UART1 == TRUE
if (&UARTD1 == uartp) {
}
#endif
}
}
/**
* @brief Starts a transmission on the UART peripheral.
* @note The buffers are organized as uint8_t arrays for data sizes below
* or equal to 8 bits else it is organized as uint16_t arrays.
*
* @param[in] uartp pointer to the @p UARTDriver object
* @param[in] n number of data frames to send
* @param[in] txbuf the pointer to the transmit buffer
*
* @notapi
*/
void uart_lld_start_send(UARTDriver *uartp, size_t n, const void *txbuf) {
(void)uartp;
(void)n;
(void)txbuf;
}
/**
* @brief Stops any ongoing transmission.
* @note Stopping a transmission also suppresses the transmission callbacks.
*
* @param[in] uartp pointer to the @p UARTDriver object
*
* @return The number of data frames not transmitted by the
* stopped transmit operation.
*
* @notapi
*/
size_t uart_lld_stop_send(UARTDriver *uartp) {
(void)uartp;
return 0;
}
/**
* @brief Starts a receive operation on the UART peripheral.
* @note The buffers are organized as uint8_t arrays for data sizes below
* or equal to 8 bits else it is organized as uint16_t arrays.
*
* @param[in] uartp pointer to the @p UARTDriver object
* @param[in] n number of data frames to send
* @param[out] rxbuf the pointer to the receive buffer
*
* @notapi
*/
void uart_lld_start_receive(UARTDriver *uartp, size_t n, void *rxbuf) {
(void)uartp;
(void)n;
(void)rxbuf;
}
/**
* @brief Stops any ongoing receive operation.
* @note Stopping a receive operation also suppresses the receive callbacks.
*
* @param[in] uartp pointer to the @p UARTDriver object
*
* @return The number of data frames not received by the
* stopped receive operation.
*
* @notapi
*/
size_t uart_lld_stop_receive(UARTDriver *uartp) {
(void)uartp;
return 0;
}
#endif /* HAL_USE_UART == TRUE */
/** @} */
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