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cpu/sam0/uart: skip uart_write() if uart isn't active

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Otherwise we get stuck in an endless loop ...
This commit is contained in:
Jue 2022-10-28 20:13:03 +02:00
parent cf5e207d62
commit aa5ad12f37
1 changed files with 4 additions and 0 deletions
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4
cpu/sam0_common/periph/uart.c
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@ -303,6 +303,10 @@ void uart_write(uart_t uart, const uint8_t *data, size_t len)
return;
}
if (!dev(uart)->CTRLA.bit.ENABLE) {
return;
}
#ifdef MODULE_PERIPH_UART_NONBLOCKING
for (const void* end = data + len; data != end; ++data) {
if (irq_is_in() || __get_PRIMASK()) {