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/******************************************************************************
* The MIT License
*
* Copyright (c) 2010 Perry Hung.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*****************************************************************************/
/**
* @file HardwareSerial.cpp
*
* @brief Wiring-like serial api
*/
#include "wirish.h"
#include "HardwareSerial.h"
#include "usart.h"
// FIXME: High density device ports, usages of BOARD_USARTx_yX_PIN
// instead of holding onto a gpio_dev, tx_pin, rx_pin, timer_dev, and
// channel_num -- that stuff is all in the PIN_MAP.
HardwareSerial Serial1(USART1, 4500000UL, GPIOA, 9, 10, TIMER1, 2);
HardwareSerial Serial2(USART2, 2250000UL, GPIOA, 2, 3, TIMER2, 3);
HardwareSerial Serial3(USART3, 2250000UL, GPIOB, 10, 11, NULL, 0);
HardwareSerial::HardwareSerial(uint8 usart_num,
uint32 max_baud,
gpio_dev *gpio_device,
uint8 tx_pin,
uint8 rx_pin,
timer_dev *timer_device,
uint8 channel_num) {
this->usart_num = usart_num;
this->max_baud = max_baud;
this->gpio_device = gpio_device;
this->tx_pin = tx_pin;
this->rx_pin = rx_pin;
this->timer_device = timer_device;
this->channel_num = channel_num;
}
uint8 HardwareSerial::read(void) {
return usart_getc(usart_num);
}
uint32 HardwareSerial::available(void) {
return usart_data_available(usart_num);
}
void HardwareSerial::write(unsigned char ch) {
usart_putc(usart_num, ch);
}
void HardwareSerial::begin(uint32 baud) {
if (baud > max_baud) {
return;
}
gpio_set_mode(gpio_device, tx_pin, GPIO_AF_OUTPUT_PP);
gpio_set_mode(gpio_device, rx_pin, GPIO_INPUT_FLOATING);
if (timer_device != NULL) {
/* turn off any pwm if there's a conflict on this usart */
timer_set_mode(timer_device, channel_num, TIMER_DISABLED);
}
usart_init(usart_num, baud);
}
void HardwareSerial::end(void) {
usart_disable(usart_num);
}
void HardwareSerial::flush(void) {
usart_reset_rx(usart_num);
}
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