pim/mgos_i2c_mock
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Include first driver: SHT31

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Make I2C reads blocking w/ timeout
Add SHT31 driver, roughly :)
Fix mg_time() to return a double.
This commit is contained in:
Pim van Pelt
2018-04-02 17:29:13 +02:00
parent cef7c5107d
commit b1d92a32a8
9 changed files with 396 additions and 35 deletions
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59
src/main.c
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@ -1,8 +1,61 @@
#include "mgos.h"
#include "mgos_i2c.h"
#include "mgos_sht31.h"
#include <fcntl.h>
#include <sys/ioctl.h>
#define I2CBUSNR 7
void i2c_scanner(struct mgos_i2c *i2c) {
int i;
if (!i2c) {
LOG(LL_ERROR, ("No global I2C bus configured"));
return;
}
for(i=0x3; i<0x77; i++) {
bool ret;
ret=mgos_i2c_read(i2c, i, NULL, 0, true);
if (ret)
LOG(LL_INFO, ("I2C Address 0x%02x %s", i, ret?"true":"false"));
}
}
bool i2c_dumpregs(struct mgos_i2c *i2c, uint8_t i2caddr) {
uint8_t reg, value;
for(reg=0; reg<255; reg++) {
if (0 != get_i2c_register(i2c, i2caddr, reg, &value)) {
LOG(LL_ERROR, ("Could not read register"));
} else {
LOG(LL_INFO, ("reg=%u value=%u", reg, value));
}
}
return true;
}
bool sht31(struct mgos_i2c *i2c, uint8_t i2caddr) {
struct mgos_sht31 *sht31;
float temp, humid;
int num;
if (!(sht31 = mgos_sht31_create(i2c, i2caddr))) {
LOG(LL_ERROR, ("Cannot create SHT31 device"));
return false;
}
num=1000;
while (num--) {
temp=mgos_sht31_getTemperature(sht31);
humid=mgos_sht31_getHumidity(sht31);
LOG(LL_INFO, ("SHT31: temperature=%.2fC humidity=%.1f%%", temp, humid));
sleep(1);
}
mgos_sht31_destroy(&sht31);
return true;
}
int main() {
struct mgos_i2c *i2c;
@ -10,11 +63,13 @@ int main() {
LOG(LL_ERROR, ("Cannot open I2C bus %u", I2CBUSNR));
return -1;
}
i2c = mgos_i2c_get_global();
if (!i2c) {
if (!(i2c = mgos_i2c_get_global())) {
LOG(LL_ERROR, ("Cannot open I2C bus"));
return -2;
}
i2c_scanner(i2c);
sht31(i2c, 0x44);
return 0;
}