readme and cleanup
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README.md
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README.md
@ -1,10 +1,35 @@
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# bme680
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Example with working temperature, pressure and humidity readout
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Example implementation, just lacking gas for now.
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```
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$ ./bme680
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61
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linux_i2c_init
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linux_i2c_read: D0 (1) [61]
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linux_i2c_write: E0 (1) [B6]
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linux_i2c_read: E9 (2) [5B,66]
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linux_i2c_read: 8A (2) [97,67]
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linux_i2c_read: 8C (1) [3]
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linux_i2c_read: 8E (2) [C0,88]
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linux_i2c_read: 90 (2) [D4,D7]
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linux_i2c_read: 92 (1) [58]
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linux_i2c_read: 94 (2) [DC,25]
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linux_i2c_read: 96 (2) [36,FF]
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linux_i2c_read: 99 (1) [1E]
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linux_i2c_read: 98 (1) [18]
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linux_i2c_read: 9C (1) [FC]
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linux_i2c_read: 9E (2) [73,F2]
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linux_i2c_read: A0 (1) [1E]
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linux_i2c_read: E2 (2) [FA,31]
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linux_i2c_read: E1 (2) [3E,FA]
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linux_i2c_read: E4 (1) [0]
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linux_i2c_read: E5 (1) [2D]
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linux_i2c_read: E6 (1) [14]
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linux_i2c_read: E7 (1) [78]
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linux_i2c_read: E8 (1) [9C]
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linux_i2c_read: ED (1) [D0]
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linux_i2c_read: EB (2) [85,E9]
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linux_i2c_read: EE (1) [12]
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par_t1: 26203
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par_t2: 26519
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par_t3: 3
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@ -15,7 +40,7 @@ par_p4: 9692
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par_p5: -202
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par_p6: 30
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par_p7: 24
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par_p8: -516
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par_p8: -4
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par_p9: -3469
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par_p10: 30
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par_h1: 794
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@ -25,10 +50,50 @@ par_h4: 45
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par_h5: 20
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par_h6: 120
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par_h7: -100
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temperature: 22.7519 oC (floating-point)
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temperature: 2275 oC (integer x100)
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pressure: 99711.8 Pa or 0.997118 bar (floating-point)
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pressure: 99708 Pa (integer)
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humidity: 62.3145 (floating-point)
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humidity: 62289 (integer x1000)
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linux_i2c_write: 74 (1) [B4]
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linux_i2c_write: 72 (1) [4]
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linux_i2c_write: 75 (1) [18]
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linux_i2c_write: 74 (1) [B5]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [20]
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linux_i2c_read: 1D (1) [80]
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linux_i2c_read: 22 (3) [75,68,0]
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linux_i2c_read: 1F (3) [55,63,70]
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linux_i2c_read: 25 (2) [62,9E]
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float mode
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tfine: 99793.535399
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temp: 19.490925 degC
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press: 96211.887865 Pa
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humidity: 67.809989 % RH
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linux_i2c_deinit
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```
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Low air pressure due to storm not bad sensor
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9
main.c
9
main.c
@ -16,7 +16,7 @@ int linux_i2c_read (uint8_t reg, uint8_t *dst, uint32_t size);
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int linux_i2c_write (uint8_t reg, uint8_t *src, uint32_t size);
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int linux_i2c_deinit (void);
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int main(){
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int main() {
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bme680_t bme680;
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uint8_t mode;
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@ -52,14 +52,12 @@ int main(){
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/* debug */
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bme680_print_calibration(&bme680);
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/* 6. set up device config */
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bme680.cfg.osrs_t = BME680_OVERSAMPLE_16X;
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bme680.cfg.osrs_p = BME680_OVERSAMPLE_16X;
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bme680.cfg.osrs_h = BME680_OVERSAMPLE_8X;
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bme680.cfg.filter = BME680_IIR_COEFF_63;
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/* 7. write config to device and set off conversion */
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if (bme680_start(&bme680) != 0) {
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fprintf(stderr, "bme680_start()\n");
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exit(EXIT_FAILURE);
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}
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/* 9. read the ADC's and perform a conversion */
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if (bme680_read(&bme680) != 0) {
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fprintf(stderr, "bme680_read()\n");
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exit(EXIT_FAILURE);
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}
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printf("adc_temp: %d\n", bme680.adc.temp);
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printf("adc_press: %d\n", bme680.adc.press);
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printf("adc_hum: %d\n", bme680.adc.hum);
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/* 10. use data ! */
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if (BME680_IS_FLOAT(bme680.mode)) {
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