51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
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/* (c) Daniele Lacamera 2019
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* GPL
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*/
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#include <unicore-mx/stm32/rcc.h>
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#include <unicore-mx/stm32/gpio.h>
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#include <unicore-mx/stm32/usart.h>
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void usart1_puts(char *s) {
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while(*s) {
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usart_send_blocking(USART1, *s);
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s++;
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}
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return;
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}
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uint8_t usart1_getc(void) {
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return usart_recv_blocking(USART1);
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}
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void usart1_putc(uint8_t c) {
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usart_send_blocking(USART1, c);
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return;
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}
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void usart1_init(void) {
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/* enable clock, USART1 is on GPIOA */
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rcc_periph_clock_enable(RCC_GPIOA);
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rcc_periph_clock_enable(RCC_USART1);
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/* setup TX pin (PA9) */
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gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO9);
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/* setup RX pin (PA10) */
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gpio_set_mode(GPIOA, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, GPIO10);
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/* Setup USART parameters. */
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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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/* enable USART */
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usart_enable(USART1);
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return;
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}
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