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Added conditional compilation around selection of TX pad candidates

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Original code was correct for SAMD21
New code for SAMD51 only permits pad-0 for TX
This commit is contained in:
Carl Elkins 2019-07-08 02:08:39 +01:00
parent 69460b943b
commit 64507207da
1 changed files with 9 additions and 1 deletions
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10
ports/atmel-samd/common-hal/busio/UART.c
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@ -88,11 +88,19 @@ void common_hal_busio_uart_construct(busio_uart_obj_t *self,
continue;
}
potential_sercom = sercom_insts[sercom_index];
if (potential_sercom->USART.CTRLA.bit.ENABLE != 0 ||
#ifdef SAMD21
if (potential_sercom->USART.CTRLA.bit.ENABLE != 0 ||
!(tx->sercom[i].pad == 0 ||
tx->sercom[i].pad == 2)) {
continue;
}
#endif
#ifdef SAMD51
if (potential_sercom->USART.CTRLA.bit.ENABLE != 0 ||
!(tx->sercom[i].pad == 0)) {
continue;
}
#endif
tx_pinmux = PINMUX(tx->number, (i == 0) ? MUX_C : MUX_D);
tx_pad = tx->sercom[i].pad;
if (rx == mp_const_none) {