Martin Mareš
3 months ago
3 changed files with 54 additions and 0 deletions
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ROOT=.. |
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BINARY=test |
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OBJS=test.o |
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LIB_OBJS=util-debug.o |
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include $(ROOT)/example.mk |
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/*
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* DMX512 Interface -- Configuration |
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* |
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* (c) 2020 Martin Mareš <mj@ucw.cz> |
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*/ |
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// Processor clock
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#define CPU_CLOCK_MHZ 72 |
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// Debugging port
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#define DEBUG_USART USART1 |
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#define DEBUG_LED_BLUEPILL |
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#include <libopencm3/stm32/rcc.h> |
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#include <libopencm3/stm32/gpio.h> |
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#include <libopencm3/stm32/usart.h> |
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#include "util.h" |
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int main(void) |
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{ |
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rcc_clock_setup_pll(&rcc_hse_configs[RCC_CLOCK_HSE8_72MHZ]); |
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rcc_periph_clock_enable(RCC_GPIOA); |
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rcc_periph_clock_enable(RCC_GPIOC); |
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rcc_periph_clock_enable(RCC_USART1); |
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// PC13 = BluePill LED
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gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, GPIO13); |
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// PA10 = RX1, PA9 = TX1
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gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, GPIO10); |
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gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO9); |
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usart_set_baudrate(USART1, 115200); |
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usart_set_databits(USART1, 8); |
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usart_set_stopbits(USART1, USART_STOPBITS_1); |
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usart_set_mode(USART1, USART_MODE_TX_RX); |
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usart_set_parity(USART1, USART_PARITY_NONE); |
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usart_set_flow_control(USART1, USART_FLOWCONTROL_NONE); |
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usart_enable(USART1); |
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int cnt = 0; |
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for (;;) { |
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debug_printf("%d\n", cnt); |
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cnt++; |
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} |
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} |
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