C++ (Cpp) STM32_USART_BRR Exemples

Exemple #1

Fichier : clock-stm32f.c Projet : thehobn/ec

void clock_wait_bus_cycles(enum bus_type bus, uint32_t cycles)
{
	volatile uint32_t dummy __attribute__((unused));

	if (bus == BUS_AHB) {
		while (cycles--)
			dummy = STM32_DMA1_REGS->isr;
	} else { /* APB */
		while (cycles--)
			dummy = STM32_USART_BRR(STM32_USART1_BASE);
	}
}

Exemple #2

Fichier : hardware.c Projet : gelraen/cros-ec

static void uart_init(void)
{
	/* set baudrate */
	STM32_USART_BRR(UARTN) =
		DIV_ROUND_NEAREST(CPU_CLOCK, CONFIG_UART_BAUD_RATE);
	/* UART enabled, 8 Data bits, oversampling x16, no parity */
	STM32_USART_CR1(UARTN) =
		STM32_USART_CR1_UE | STM32_USART_CR1_TE | STM32_USART_CR1_RE;
	/* 1 stop bit, no fancy stuff */
	STM32_USART_CR2(UARTN) = 0x0000;
	/* DMA disabled, special modes disabled, error interrupt disabled */
	STM32_USART_CR3(UARTN) = 0x0000;
}