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typec/stm32: fix UCPD sink bugs affecting compatibility with newer PD sources #3616

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typec/stm32: fix UCPD sink bugs affecting compatibility with newer PD sources #3616

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7a73e69
typec/stm32: fix three UCPD sink bugs for strict PD 3.0 sources
michaelajax Apr 24, 2026
b3665a7
typec/stm32: fix -Wcast-qual error, _rx_buf doesn't need const
michaelajax Apr 24, 2026
7b8871c
typec/stm32: updates based on Copilot review
michaelajax Apr 24, 2026
b5e63ca
typec/stm32: guard hard reset RX re-arm against uninitialized buffer
michaelajax Apr 24, 2026
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typec/stm32: guard hard reset RX re-arm against uninitialized buffer
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@michaelajax
michaelajax committed Apr 24, 2026
commit b5e63ca44c846813ece9ad9df684cae0d1d5b542
6 changes: 4 additions & 2 deletions src/portable/st/typec/typec_stm32.c
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Expand Up @@ -342,8 +342,10 @@ void tcd_int_handler(uint8_t rhport) {
// flag will remain set and re-enter the ISR immediately
if (sr & UCPD_SR_RXHRSTDET) {
TU_LOG3("Hard Reset received\r\n");
dma_stop(rhport, true);
tcd_msg_receive(rhport, _rx_buf, _rx_buf_len);
if (_rx_buf != NULL && _rx_buf_len > 0) {
dma_stop(rhport, true);
tcd_msg_receive(rhport, _rx_buf, _rx_buf_len);
}
UCPD1->ICR = UCPD_ICR_RXHRSTDETCF;
}

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