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Update mcp4461.cpp

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Oliver Kleinecke 2025-02-05 18:26:07 +01:00 committed by GitHub
parent 3e5f4c847f
commit c536812dc2
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1 changed files with 5 additions and 3 deletions
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8
esphome/components/mcp4461/mcp4461.cpp
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@ -127,12 +127,14 @@ uint8_t Mcp4461Component::get_status_register() {
return 0;
}
uint8_t msb = buf >> 8;
if (msb != 1) {
// D8 bit is hardlocked to 1 -> a status msb of 0 indicates device/communication issues, therefore mark component failed
uint8_t lsb;
lsb = static_cast<uint8_t>(buf & 0x00ff);
if (msb != 1 || ((lsb >> 7) & 0x01)) != 1 || ((lsb >> 1) & 0x01) != 1) {
// D8, D7 and R1 bits are hardlocked to 1 -> a status msb bit 0 (bit 9 of status register) of 0 or lsb bit 1/7 = 0 indicate device/communication issues, therefore mark component failed
this->mark_failed();
return 0;
}
return static_cast<uint8_t>(buf & 0x00ff);
return ;
}
bool Mcp4461Component::is_writing_() { return static_cast<bool>((this->get_status_register() >> 4) & 0x01); }