Comments (4)
Hi! You need separate descriptors for each i2c device.
from esp-idf-lib.
@UncleRus oky so i work with detected device so i can create instance with malloc bcs number of device is detected with i2ccannser
now i create max :
//
static float pressure, temperature, humidity;
static bmp280_t dev_bme280 [8] = {0};
static bmp280_params_t params_bme280 [8] = {0};
//
uint16_t lux;
i2c_dev_t dev_bh1750[8]= {0};
/***************************************************/
i2c_dev_t dev_pcf8574[8];
uint16_t read_port_pcf8574;
/****************************************************/
from esp-idf-lib.
Yes you can create device descriptors dynamically, e.g.
i2c_dev_t *bh1750; // pointer to device descriptor
...
bh1750 = malloc(sizeof(i2c_dev_t)); // allocate memory for descriptor
memset(bh1750, 0, sizeof(i2c_dev_t))); // fill it with zeroes
... // init descriptor, init device, use it
free(bh1750); // free allocated memory
from esp-idf-lib.
Ah yes yes but for sensor i don't think I free memory bcs I use all time read_bh1750 and I don't initialize device for each read
So it's don't give problem if I don't use free(p) ?
from esp-idf-lib.
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from esp-idf-lib.