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sm300d2: Accept (undocumented) 0x80 checksum offset. (#2263)

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Co-authored-by: Matt Hallacy <github@poptix.net>
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poptix 2021-09-10 04:05:25 -05:00 committed by GitHub
parent affaaf7d2c
commit 3d71e2e189
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1 changed files with 2 additions and 1 deletions
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esphome/components/sm300d2/sm300d2.cpp
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@ -27,7 +27,8 @@ void SM300D2Sensor::update() {
} }
uint16_t calculated_checksum = this->sm300d2_checksum_(response); uint16_t calculated_checksum = this->sm300d2_checksum_(response);
if (calculated_checksum != response[SM300D2_RESPONSE_LENGTH - 1]) { if ((calculated_checksum != response[SM300D2_RESPONSE_LENGTH - 1]) &&
(calculated_checksum - 0x80 != response[SM300D2_RESPONSE_LENGTH - 1])) {
ESP_LOGW(TAG, "SM300D2 Checksum doesn't match: 0x%02X!=0x%02X", response[SM300D2_RESPONSE_LENGTH - 1], ESP_LOGW(TAG, "SM300D2 Checksum doesn't match: 0x%02X!=0x%02X", response[SM300D2_RESPONSE_LENGTH - 1],
calculated_checksum); calculated_checksum);
this->status_set_warning(); this->status_set_warning();