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Fix esp32s2 uart.write() return value

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This commit is contained in:
Dan Halbert 2021-04-22 09:47:54 -04:00
parent b3ffb3ab1f
commit f1b5249d3c
1 changed files with 4 additions and 3 deletions
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7
ports/esp32s2/common-hal/busio/UART.c
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@ -291,13 +291,14 @@ size_t common_hal_busio_uart_write(busio_uart_obj_t *self, const uint8_t *data,
mp_raise_ValueError(translate("No TX pin")); mp_raise_ValueError(translate("No TX pin"));
} }
while (len > 0) { size_t left_to_write = len;
int count = uart_tx_chars(self->uart_num, (const char *)data, len); while (left_to_write > 0) {
int count = uart_tx_chars(self->uart_num, (const char *)data, left_to_write);
if (count < 0) { if (count < 0) {
*errcode = MP_EAGAIN; *errcode = MP_EAGAIN;
return MP_STREAM_ERROR; return MP_STREAM_ERROR;
} }
len -= count; left_to_write -= count;
data += count; data += count;
RUN_BACKGROUND_TASKS; RUN_BACKGROUND_TASKS;
} }