diff options
author | Perry Hung <iperry@alum.mit.edu> | 2010-04-25 18:14:43 -0400 |
---|---|---|
committer | Perry Hung <iperry@alum.mit.edu> | 2010-04-25 18:14:43 -0400 |
commit | 4ccbeb08e64b6bc7cee1f54a04001eff778b4282 (patch) | |
tree | 05f71e01c98ac341c029b2a050b796f1be3de8b5 /wirish/comm/HardwareSerial.cpp | |
parent | b41eb846ca60559cff242d0c550699eb8f309909 (diff) | |
parent | 62552a6f3f93223682f9df2df2614411f7e3d54c (diff) | |
download | librambutan-4ccbeb08e64b6bc7cee1f54a04001eff778b4282.tar.gz librambutan-4ccbeb08e64b6bc7cee1f54a04001eff778b4282.zip |
Merge branch 'master' into spi
Diffstat (limited to 'wirish/comm/HardwareSerial.cpp')
-rw-r--r-- | wirish/comm/HardwareSerial.cpp | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/wirish/comm/HardwareSerial.cpp b/wirish/comm/HardwareSerial.cpp new file mode 100644 index 0000000..3e855ea --- /dev/null +++ b/wirish/comm/HardwareSerial.cpp @@ -0,0 +1,102 @@ +/* ***************************************************************************** + * 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" +#include "gpio.h" +#include "timers.h" + +#define USART1_TX_PORT GPIOA_BASE +#define USART1_TX_PIN 9 +#define USART1_RX_PORT GPIOA_BASE +#define USART1_RX_PIN 10 + +#define USART2_TX_PORT GPIOA_BASE +#define USART2_TX_PIN 2 +#define USART2_RX_PORT GPIOA_BASE +#define USART2_RX_PIN 3 + +#define USART3_TX_PORT GPIOB_BASE +#define USART3_TX_PIN 10 +#define USART3_RX_PORT GPIOB_BASE +#define USART3_RX_PIN 11 + +HardwareSerial::HardwareSerial(uint8 usartNum) { + ASSERT(usartNum == 1 || + usartNum == 2 || + usartNum == 3); + this->usartNum = usartNum; +} + +uint8 HardwareSerial::read(void) { + return usart_getc(usartNum); +} + +uint32 HardwareSerial::available(void) { + + return usart_data_available(usartNum); +} + +void HardwareSerial::write(unsigned char ch) { + usart_putc(usartNum, ch); +} + +void HardwareSerial::begin(uint32 baud) { + ASSERT(!(baud > USART_MAX_BAUD)); + + /* Set appropriate pin modes */ + switch (usartNum) { + case 1: + gpio_set_mode(USART1_TX_PORT, USART1_TX_PIN, GPIO_MODE_AF_OUTPUT_PP); + gpio_set_mode(USART1_RX_PORT, USART1_RX_PIN, GPIO_MODE_INPUT_FLOATING); + /* Turn off any pwm */ + timers_disable_channel(1, 2); + break; + case 2: + gpio_set_mode(USART2_TX_PORT, USART2_TX_PIN, GPIO_MODE_AF_OUTPUT_PP); + gpio_set_mode(USART2_RX_PORT, USART2_RX_PIN, GPIO_MODE_INPUT_FLOATING); + /* Turn off any pwm */ + timers_disable_channel(2, 3); + break; + case 3: + gpio_set_mode(USART3_TX_PORT, USART3_TX_PIN, GPIO_MODE_AF_OUTPUT_PP); + gpio_set_mode(USART3_RX_PORT, USART3_RX_PIN, GPIO_MODE_INPUT_FLOATING); + break; + default: + ASSERT(0); + } + + usart_init(usartNum, baud); +} + +HardwareSerial Serial1(1); +HardwareSerial Serial2(2); +HardwareSerial Serial3(3); |