sascha/esphome
1
0
Fork 0
mirror of https://github.com/esphome/esphome.git synced 2026-02-08 00:31:58 +00:00
Code Issues Releases Wiki Activity

[sensirion_common] Fix incorrect Big Endian conversion (#13492)

Browse Source
This commit is contained in:
Big Mike
2026-01-23 20:19:41 -06:00
committed by GitHub
parent e4763f8e71
commit 165e362a1b
1 changed files with 0 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
esphome/components/sensirion_common/i2c_sensirion.cpp
View File

@@ -57,24 +57,14 @@ bool SensirionI2CDevice::write_command_(uint16_t command, CommandLen command_len
temp[raw_idx++] = command & 0xFF;
} else {
// command is 2 bytes
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
temp[raw_idx++] = command >> 8;
temp[raw_idx++] = command & 0xFF;
#else
temp[raw_idx++] = command & 0xFF;
temp[raw_idx++] = command >> 8;
#endif
}
// add parameters followed by crc
// skipped if len == 0
for (size_t i = 0; i < data_len; i++) {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
temp[raw_idx++] = data[i] >> 8;
temp[raw_idx++] = data[i] & 0xFF;
#else
temp[raw_idx++] = data[i] & 0xFF;
temp[raw_idx++] = data[i] >> 8;
#endif
// Use MSB first since Sensirion devices use CRC-8 with MSB first
uint8_t crc = crc8(&temp[raw_idx - 2], 2, 0xFF, CRC_POLYNOMIAL, true);
temp[raw_idx++] = crc;