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Add USART1 back in HWinit #135

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merged 1 commit into from
Dec 15, 2024
Merged

Add USART1 back in HWinit #135

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1 change: 1 addition & 0 deletions include/hwinit.h
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,7 @@ extern "C"
void clock_setup(void);
void usart_setup(void);
void usart2_setup(void);
void usart1_setup(void);
void nvic_setup(void);
void rtc_setup(void);
void tim_setup(void);
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21 changes: 21 additions & 0 deletions src/hwinit.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,7 @@ void clock_setup(void)
rcc_periph_clock_enable(RCC_GPIOE);
rcc_periph_clock_enable(RCC_USART3);
rcc_periph_clock_enable(RCC_USART2);//GS450H Inverter Comms
rcc_periph_clock_enable(RCC_USART1);//LIN Comms
rcc_periph_clock_enable(RCC_TIM1); //GS450H oil pump pwm
rcc_periph_clock_enable(RCC_TIM2); //GS450H 500khz usart clock
rcc_periph_clock_enable(RCC_TIM3); //PWM outputs
Expand Down Expand Up @@ -102,6 +103,26 @@ void spi3_setup() //spi3 used for digi pots (fuel gauge etc)
spi_enable(SPI3);
}

/**
* Setup USART1 for LINbus
*/

void usart1_setup(void)
{
/* Setup GPIO pin GPIO_USART1_TX and GPIO_USART1_RX. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_TX);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_FLOAT, GPIO_USART1_RX);
usart_set_baudrate(USART1, 19200);
usart_set_databits(USART1, 8);
usart_set_stopbits(USART1, USART_STOPBITS_1);
usart_set_mode(USART1, USART_MODE_TX_RX);
usart_set_parity(USART1, USART_PARITY_NONE);
usart_set_flow_control(USART1, USART_FLOWCONTROL_NONE);
usart_enable(USART1);
}

/**
* Setup USART2 500000 8N1 for Toyota inverter comms
*/
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