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create library and make two examples of usage

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Edward Emelianov
2025-10-14 00:17:07 +03:00
parent 7a37dc0d2f
commit ea0de3c904
20 changed files with 499 additions and 149 deletions
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10
I2Csensors/SHT3x.c
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@@ -81,10 +81,14 @@ static uint8_t crc8(const uint8_t *data, int len){
static sensor_status_t s_process(sensor_t *s){
if(s->status != SENS_BUSY) return s->status;
if(sl_dtime() - *((double*)s->privdata) < MEASUREMENT_TIMEOUT) return s->status;
uint8_t data[6];
if(!i2c_read_raw(data, 6)) return (s->status = SENS_ERR);
if(data[2] != crc8(data, 2) || data[5] != crc8(data + 3, 2)) return (s->status = SENS_ERR);
int ans = i2c_read_raw(data, 6);
if(sl_dtime() - *((double*)s->privdata) < MEASUREMENT_TIMEOUT){
if(!ans) return s->status; // poll ACK
}
if(!ans) return (s->status = SENS_ERR); // timeout!
i2c_write_raw(cmd_clear_status_reg, 2); // need to write any command or sensor will widthraw into itself
if(data[2] != crc8(data, 2) || data[5] != crc8(data + 3, 2)) return (s->status = SENS_ERR); // CRC error
int32_t stemp = (int32_t)(((uint32_t)data[0] << 8) | data[1]);
stemp = ((4375 * stemp) >> 14) - 4500;
s->data.T = stemp / 100.;