diff options
Diffstat (limited to 'wirish')
| -rw-r--r-- | wirish/comm/HardwareSerial.cpp | 88 | ||||
| -rw-r--r-- | wirish/comm/HardwareSerial.h | 17 |
2 files changed, 49 insertions, 56 deletions
diff --git a/wirish/comm/HardwareSerial.cpp b/wirish/comm/HardwareSerial.cpp index 7157e74..c1babff 100644 --- a/wirish/comm/HardwareSerial.cpp +++ b/wirish/comm/HardwareSerial.cpp @@ -34,77 +34,59 @@ #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; +HardwareSerial Serial1(USART1, 4500000UL, GPIOA_BASE, 9, 10, 1, 2); +HardwareSerial Serial2(USART2, 2250000UL, GPIOA_BASE, 2, 3, 2, 3); +HardwareSerial Serial3(USART3, 2250000UL, GPIOB_BASE, 10, 11, 0, 0); + +HardwareSerial::HardwareSerial(uint8 usart_num, + uint32 max_baud, + GPIO_Port *gpio_port, + uint8 tx_pin, + uint8 rx_pin, + uint8 timer_num, + uint8 compare_num) { + this->usart_num = usart_num; + this->max_baud = max_baud; + this->gpio_port = gpio_port; + this->tx_pin = tx_pin; + this->rx_pin = rx_pin; + this->timer_num = timer_num; + this->compare_num = compare_num; } uint8 HardwareSerial::read(void) { - return usart_getc(usartNum); + return usart_getc(usart_num); } uint32 HardwareSerial::available(void) { - - return usart_data_available(usartNum); + return usart_data_available(usart_num); } void HardwareSerial::write(unsigned char ch) { - usart_putc(usartNum, ch); + usart_putc(usart_num, ch); } void HardwareSerial::begin(uint32 baud) { - ASSERT(!(baud > USART_MAX_BAUD)); + if (baud > max_baud) { + return; + } + + gpio_set_mode(gpio_port, tx_pin, GPIO_MODE_AF_OUTPUT_PP); + gpio_set_mode(gpio_port, rx_pin, GPIO_MODE_INPUT_FLOATING); - /* 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 */ - timer_set_mode(1, 2, TIMER_DISABLED); - 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 */ - timer_set_mode(2, 3, TIMER_DISABLED); - 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); - } + if ((usart_num == USART1) || + (usart_num == USART2)) { + /* turn off any pwm if there's a conflict on this usart */ + timer_set_mode(timer_num, compare_num, TIMER_DISABLED); + } - usart_init(usartNum, baud); + usart_init(usart_num, baud); } void HardwareSerial::end(void) { - usart_disable(usartNum); + usart_disable(usart_num); } void HardwareSerial::flush(void) { - usart_clear_buffer(usartNum); + usart_reset_rx(usart_num); } - -HardwareSerial Serial1(1); -HardwareSerial Serial2(2); -HardwareSerial Serial3(3); diff --git a/wirish/comm/HardwareSerial.h b/wirish/comm/HardwareSerial.h index 5ed81cd..c2209ce 100644 --- a/wirish/comm/HardwareSerial.h +++ b/wirish/comm/HardwareSerial.h @@ -35,9 +35,21 @@ class HardwareSerial : public Print { private: - uint8 usartNum; + uint8 usart_num; + uint32 max_baud; + GPIO_Port *gpio_port; + uint8 tx_pin; + uint8 rx_pin; + uint8 timer_num; + uint8 compare_num; public: - HardwareSerial(uint8); + HardwareSerial(uint8 usart_num, + uint32 max_baud, + GPIO_Port *gpio_port, + uint8 tx_pin, + uint8 rx_pin, + uint8 timer_num, + uint8 compare_num); void begin(uint32); void end(void); uint32 available(void); @@ -46,7 +58,6 @@ class HardwareSerial : public Print { virtual void write(unsigned char); using Print::write; }; - extern HardwareSerial Serial1; extern HardwareSerial Serial2; extern HardwareSerial Serial3; |