diff --git a/README.md b/README.md
index c1e6da8..e34e410 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ The loggers spit out the following every minute:
 
 >Note: disregard measured gas resistance if the heat stability bit is not 1.
 
-## spi demo
+## bme680_{i2c,spi} demo output
 ```
 par_t1: 26203
 par_t2: 26519
@@ -67,48 +67,9 @@ gas resistance: 12100.310308 Ohm
 === heat_stab_r: 1
 ```
 
-## i2c demo
-```
-par_t1: 26125
-par_t2: 26370
-par_t3: 3
-par_p1: 36262
-par_p2: -10371
-par_p3: 88
-par_p4: 6713
-par_p5: -103
-par_p6: 30
-par_p7: 31
-par_p8: -251
-par_p9: -3158
-par_p10: 30
-par_h1: 776
-par_h2: 1010
-par_h3: 0
-par_h4: 45
-par_h5: 20
-par_h6: 120
-par_h7: -100
-par_g1: 183
-par_g2: 59281
-par_g3: 18
-range_switching_error: 19
-res_heat_range: 1
-res_heat_val: 39
-float mode
-tfine: 97289.819111
-temp: 19.001918 degC
-press: 100226.479673 Pa
-humidity: 67.022216 % RH
-gas resistance: 14702.868852 Ohm
-== for heater target=300.0 and ambient temp=19.0 (degC)
-=== gas_valid_r: 1
-=== heat_stab_r: 1
-```
-
 ## Burn-in / logging
 
-See file `example/log.c` 
+See file `cmd/log.c` 
 
 ![Graph of gas resistance measured over time](.gitea/gas.png)
 ![Graph of temperature measured over time](.gitea/temp.png)
diff --git a/example/log.c b/example/log.c
deleted file mode 100644
index b18a258..0000000
--- a/example/log.c
+++ /dev/null
@@ -1,101 +0,0 @@
-#define _DEFAULT_SOURCE 
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <time.h>
-
-#include "bme680.h"
-#include "i2c.h"
-
-#define AMBIENT_TEMP_GUESS 19.0
-#define HEATER_TARGET 300.0
-
-
-int main(void) {
-	
-	bme680_t bme680;
-	uint8_t mode;
-	double temperature = AMBIENT_TEMP_GUESS;
-	time_t curr_time;
-	char date[100];
-
-	bme680.dev.init   = i2c_init;	
-	bme680.dev.read   = i2c_read;
-	bme680.dev.write  = i2c_write;
-	bme680.dev.deinit = i2c_deinit;
-	bme680.dev.sleep  = usleep;
-
-	mode = BME680_MODE_FLOAT | BME680_I2C | BME680_ENABLE_GAS;
-
-
-	if (bme680_init(&bme680, mode) != 0) {
-		fprintf(stderr, "bme680_init()\n");
-		exit(EXIT_FAILURE);
-	}
-
-START:
-	bme680_reset(&bme680);
-
-	if (bme680_calibrate(&bme680) != 0) {
-		fprintf(stderr, "bme680_calibrate()\n");
-		bme680_deinit(&bme680);
-		exit(EXIT_FAILURE);
-	}
-
-	bme680.cfg.osrs_t = BME680_OVERSAMPLE_X16;
-	bme680.cfg.osrs_p = BME680_OVERSAMPLE_X16;
-	bme680.cfg.osrs_h = BME680_OVERSAMPLE_X8;
-	bme680.cfg.filter = BME680_IIR_COEFF_127;
-
-	bme680.cfg.res_heat[0] = bme680_calc_target(&bme680, HEATER_TARGET, temperature);
-	bme680.cfg.idac_heat[0] = BME680_IDAC(100);
-	bme680.cfg.gas_wait[0] = BME680_GAS_WAIT(25, BME680_GAS_WAIT_X4);
-	
-	bme680.setpoint = 0;
-
-	if (bme680_configure(&bme680) != 0) {
-		fprintf(stderr, "bme680_configure()\n");
-		bme680_deinit(&bme680);
-		exit(EXIT_FAILURE);
-	}
-
-	if (bme680_start(&bme680) != 0) {
-		fprintf(stderr, "bme680_start()\n");
-		bme680_deinit(&bme680);
-		exit(EXIT_FAILURE);
-	}
-
-	if (bme680_poll(&bme680) != 0) {
-		fprintf(stderr, "bme680_poll()\n");
-		bme680_deinit(&bme680);
-		exit(EXIT_FAILURE);
-	}
-
-	if (bme680_read(&bme680) != 0) {
-		fprintf(stderr, "bme680_read()\n");
-		bme680_deinit(&bme680);
-		exit(EXIT_FAILURE);
-	}
-
-	curr_time = time(NULL);
-	strftime(date, 100, "%FT%T%z", localtime(&curr_time));
-	printf("%s %g %g %g %g %d\n",
-			date,
-			bme680.fcomp.temp,
-			bme680.fcomp.press,
-			bme680.fcomp.hum,
-			bme680.fcomp.gas_res,
-			!!bme680.heat_stab);
-
-	temperature = bme680.fcomp.temp;
-
-	// 60 secs
-	usleep(1000*1000*60);
-	goto START;
-
-	bme680_deinit(&bme680);
-
-	return 0;
-}
-