73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
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/*
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* Copyright 2022 Oleg Borodin <borodin@unix7.org>
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*/
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#include <libopencm3/cm3/nvic.h>
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#include <libopencm3/cm3/systick.h>
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#include <libopencm3/cm3/scb.h>
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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 <libopencm3/stm32/flash.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <string.h>
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#include <math.h>
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#include <usartu.h>
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#include <ibus.h>
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static void clock_setup(void) {
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rcc_clock_setup_pll(&rcc_hse_8mhz_3v3[RCC_CLOCK_3V3_168MHZ]);
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rcc_periph_clock_enable(RCC_GPIOA);
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rcc_periph_clock_enable(RCC_GPIOB);
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rcc_periph_clock_enable(RCC_GPIOD);
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rcc_periph_clock_enable(RCC_USART1);
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rcc_periph_clock_enable(RCC_USART2);
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}
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static void usart_setup(uint32_t usart, uint32_t gpioport, uint32_t gpiopins, uint32_t baudrate) {
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usart_disable(usart);
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gpio_mode_setup(gpioport, GPIO_MODE_AF, GPIO_PUPD_NONE, gpiopins);
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gpio_set_af(gpioport, GPIO_AF7, gpiopins);
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gpio_set_output_options(gpioport, GPIO_OTYPE_PP, GPIO_OSPEED_100MHZ, gpiopins);
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usart_set_baudrate(usart, baudrate);
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usart_set_databits(usart, 8);
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usart_set_stopbits(usart, USART_STOPBITS_1);
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usart_set_parity(usart, USART_PARITY_NONE);
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usart_set_flow_control(usart, USART_FLOWCONTROL_NONE);
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usart_set_mode(usart, USART_MODE_TX_RX);
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usart_disable_rx_interrupt(usart);
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usart_enable(usart);
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}
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int main(void) {
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clock_setup();
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usart_setup(USART1, GPIOA, GPIO9 | GPIO10, 460800);
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usart_setup(USART2, GPIOD, GPIO6, 115200);
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ibus_t bus;
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ibus_init(&bus);
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while (true) {
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uint8_t ibyte = usart_recv_blocking(USART2);
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bool ready = ibus_recv(&bus, ibyte);
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if (ready) {
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for (int i = 0; i < ibus_chcount(&bus); i++) {
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printf("%2d=%4d ", i, ibus_getch(&bus, i));
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}
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printf(" xxx \r\n");
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}
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}
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}
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