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Merge pull request #5819 from makomi/stm32l1

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cpu/stm32l1: uart: suppress cppcheck nullPointer errors
This commit is contained in:
Oleg Hahm 2016-09-23 20:15:50 +02:00 committed by GitHub
commit 63615157ef
1 changed files with 8 additions and 0 deletions
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8
cpu/stm32l1/periph/uart.c
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@ -113,6 +113,10 @@ static int init_base(uart_t uart, uint32_t baudrate)
return -1;
}
/* Make sure dev is != NULL here, i.e. that the variable is assigned in
* all non-returning branches of the switch at the top of this function. */
assert(dev != NULL);
/* uart_configure RX and TX pins, set pin to use alternative function mode */
gpio_init(tx_pin, GPIO_OUT);
gpio_init_af(tx_pin, af);
@ -157,6 +161,10 @@ void uart_write(uart_t uart, const uint8_t *data, size_t len)
return;
}
/* Make sure dev is != NULL here, i.e. that the variable is assigned in
* all non-returning branches of the switch at the top of this function. */
assert(dev != NULL);
for (size_t i = 0; i < len; i++) {
while (!(dev->SR & USART_SR_TXE)) {}
dev->DR = data[i];