diff options
Diffstat (limited to 'src/sensor_ads1220.c')
| -rw-r--r-- | src/sensor_ads1220.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/sensor_ads1220.c b/src/sensor_ads1220.c index 044980c7..ea33379a 100644 --- a/src/sensor_ads1220.c +++ b/src/sensor_ads1220.c @@ -86,7 +86,9 @@ ads1220_read_adc(struct ads1220_adc *ads1220, uint8_t oid) barrier(); // create 24 bit int from bytes - int32_t counts = (msg[0] << 16) | (msg[1] << 8) | msg[2]; + uint32_t counts = ((uint32_t)msg[0] << 16) + | ((uint32_t)msg[1] << 8) + | ((uint32_t)msg[2]); // extend 2's complement 24 bits to 32bits if (counts & 0x800000) |