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stm32-h103 examples: Cosmetic and coding style fixes.

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This commit is contained in:
Uwe Hermann
2011-11-03 00:57:46 +01:00
parent a3ce2924df
commit 44bf853e6e
16 changed files with 317 additions and 363 deletions
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18
examples/stm32/f1/stm32-h103/usart/usart.c
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@@ -26,18 +26,22 @@ void clock_setup(void)
rcc_clock_setup_in_hse_8mhz_out_72mhz();
/* Enable GPIOC clock. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN | RCC_APB2ENR_IOPCEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR,
RCC_APB2ENR_IOPAEN | RCC_APB2ENR_IOPBEN |
RCC_APB2ENR_IOPCEN);
/* Enable clocks for GPIO port B (for GPIO_USART3_TX) and USART3. */
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_USART1EN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USART2EN | RCC_APB1ENR_USART3EN);
rcc_peripheral_enable_clock(&RCC_APB1ENR,
RCC_APB1ENR_USART2EN |
RCC_APB1ENR_USART3EN);
}
void usart_setup(void)
{
/* Setup GPIO pin GPIO_USART1_TX. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_TX);
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART1_TX);
/* Setup UART parameters. */
usart_set_baudrate(USART1, 38400, rcc_ppre2_frequency);
@@ -52,7 +56,7 @@ void usart_setup(void)
/* Setup GPIO pin GPIO_USART2_TX. */
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART2_TX);
/* Setup UART parameters. */
usart_set_baudrate(USART2, 38400, rcc_ppre1_frequency);
@@ -67,7 +71,7 @@ void usart_setup(void)
/* Setup GPIO pin GPIO_USART3_TX/GPIO10 on GPIO port B for transmit. */
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_50_MHZ,
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART3_TX);
GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, GPIO_USART3_TX);
/* Setup UART parameters. */
usart_set_baudrate(USART3, 38400, rcc_ppre1_frequency);
@@ -98,7 +102,7 @@ int main(void)
/* Blink the LED (PC12) on the board with every transmitted byte. */
while (1) {
gpio_toggle(GPIOC, GPIO12); /* LED on/off */
gpio_toggle(GPIOC, GPIO12); /* LED on/off */
usart_send_blocking(USART1, c + '0'); /* USART1: Send byte. */
usart_send_blocking(USART2, c + '0'); /* USART2: Send byte. */
usart_send_blocking(USART3, c + '0'); /* USART3: Send byte. */
@@ -112,7 +116,7 @@ int main(void)
usart_send_blocking(USART3, '\n');
}
for (i = 0; i < 800000; i++) /* Wait a bit. */
__asm__("NOP");
__asm__("nop");
}
return 0;