ESP8266 Community Forum

- Thu Mar 26, 2015 10:47 am #12670

BMP180 example:
In file i2c_bmp180.c should such a two change (in bold):

bool ICACHE_FLASH_ATTR BMP180_Init()
{

i2c_init(); // ----------------- should be added here
...
char temp[80]; //80 bytes buffer is too small for this prints -----------, eg. use 128 bytes

mariuszb you checked i2c_bmp180 example in dealing with real sensor? Can you give an example of a working i2c_bmp180?

Yes, I have BMP180. But its complicated because my program its mixture ESP12,ESP01 with DHT22,BMP180 and DS18B20.

Better just add i2c_init()
and increase this buffer temp[80] to temp[128].
If I find more , I will let You know.
(without init not works on eg. port12 and 13; if buffer is to small..You know what happens )

Ps. Did You read my previous post about httpclient.c - reconect problem???

- Thu Mar 26, 2015 10:54 am #12671 I think i2cinit should be called by the upper level because bmp180 is not the only application which uses i2c bus.

- Thu Mar 26, 2015 10:59 am #12672

BMP180 example:
In file i2c_bmp180.c should such a two change (in bold):

bool ICACHE_FLASH_ATTR BMP180_Init()
{

i2c_init(); // ----------------- should be added here
...
char temp[80]; //80 bytes buffer is too small for this prints -----------, eg. use 128 bytes

mariuszb you checked i2c_bmp180 example in dealing with real sensor? Can you give an example of a working i2c_bmp180?

CHERTS This is this print example:
BMP180 read calibration data...
BMP180_Calibration:
AC1: 7835, AC2: -1100, AC3: -14030, AC4: 33186, AC5: 25472, AC6: 20540, B1: 6515, B2: 40, MB: -32768, MC: -11786, MD: 2532
and could be longer

- Thu Mar 26, 2015 11:13 am #12674

I think i2cinit should be called by the upper level because bmp180 is not the only application which uses i2c bus.

There is no upper level in this example because its only... bmp180 example