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Merge pull request #5818 from makomi/stm32f3

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cpu/stm32f3: uart: suppress cppcheck nullPointer errors
This commit is contained in:
Oleg Hahm 2016-09-23 20:13:29 +02:00 committed by GitHub
commit 797ab580c8
1 changed files with 10 additions and 0 deletions
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10
cpu/stm32f3/periph/uart.c
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@ -119,6 +119,12 @@ static int init_base(uart_t uart, uint32_t baudrate)
return -1;
}
/* Make sure port and dev are != NULL here, i.e. that the variables are
* assigned in all non-returning branches of the switch at the top of this
* function. */
assert(port != NULL);
assert(dev != NULL);
/* uart_configure RX and TX pins, set pin to use alternative function mode */
port->MODER &= ~(3 << (rx_pin * 2) | 3 << (tx_pin * 2));
port->MODER |= 2 << (rx_pin * 2) | 2 << (tx_pin * 2);
@ -178,6 +184,10 @@ 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->ISR & USART_ISR_TXE)) {}
dev->TDR = data[i];