DigitalInfinity/ESP32-PaxCounter
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i2c functions moved from power.cpp to i2c.cpp

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Verkehrsrot committed 2019-12-21 14:27:33 +01:00
1 parent 0c584f0f1b
commit 97b02d34b9
4 files changed
+51 -52
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src/i2c.cpp
+49 -1
View File
@@ -88,4 +88,52 @@ int i2c_scan(void) {
ESP_LOGE(TAG, "I2c bus busy - scan error");
return devices;
}
}
// mutexed functions for i2c r/w access
uint8_t i2c_readBytes(uint8_t addr, uint8_t reg, uint8_t *data, uint8_t len) {
if (I2C_MUTEX_LOCK()) {
uint8_t ret = 0;
Wire.beginTransmission(addr);
Wire.write(reg);
Wire.endTransmission(false);
uint8_t cnt = Wire.requestFrom(addr, (uint8_t)len, (uint8_t)1);
if (!cnt)
ret = 0xFF;
uint16_t index = 0;
while (Wire.available()) {
if (index > len) {
ret = 0xFF;
goto finish;
}
data[index++] = Wire.read();
}
finish:
I2C_MUTEX_UNLOCK(); // release i2c bus access
return ret;
} else {
ESP_LOGW(TAG, "[%0.3f] i2c mutex lock failed", millis() / 1000.0);
return 0xFF;
}
}
uint8_t i2c_writeBytes(uint8_t addr, uint8_t reg, uint8_t *data, uint8_t len) {
if (I2C_MUTEX_LOCK()) {
uint8_t ret = 0;
Wire.beginTransmission(addr);
Wire.write(reg);
for (uint16_t i = 0; i < len; i++) {
Wire.write(data[i]);
}
ret = Wire.endTransmission();
I2C_MUTEX_UNLOCK(); // release i2c bus access
return ret ? ret : 0xFF;
} else {
ESP_LOGW(TAG, "[%0.3f] i2c mutex lock failed", millis() / 1000.0);
return 0xFF;
}
}
src/power.cpp
-49
View File
@@ -147,55 +147,6 @@ void AXP192_init(void) {
}
}
// helper functions for mutexing pmu i2c access
uint8_t i2c_readBytes(uint8_t addr, uint8_t reg, uint8_t *data, uint8_t len) {
if (I2C_MUTEX_LOCK()) {
uint8_t ret = 0;
Wire.beginTransmission(addr);
Wire.write(reg);
Wire.endTransmission(false);
uint8_t cnt = Wire.requestFrom(addr, (uint8_t)len, (uint8_t)1);
if (!cnt)
ret = 0xFF;
uint16_t index = 0;
while (Wire.available()) {
if (index > len) {
ret = 0xFF;
goto finish;
}
data[index++] = Wire.read();
}
finish:
I2C_MUTEX_UNLOCK(); // release i2c bus access
return ret;
} else {
ESP_LOGW(TAG, "[%0.3f] i2c mutex lock failed", millis() / 1000.0);
return 0xFF;
}
}
uint8_t i2c_writeBytes(uint8_t addr, uint8_t reg, uint8_t *data, uint8_t len) {
if (I2C_MUTEX_LOCK()) {
uint8_t ret = 0;
Wire.beginTransmission(addr);
Wire.write(reg);
for (uint16_t i = 0; i < len; i++) {
Wire.write(data[i]);
}
ret = Wire.endTransmission();
I2C_MUTEX_UNLOCK(); // release i2c bus access
// return ret ? 0xFF : ret;
return ret ? ret : 0xFF;
} else {
ESP_LOGW(TAG, "[%0.3f] i2c mutex lock failed", millis() / 1000.0);
return 0xFF;
}
}
#endif // HAS_PMU
void calibrate_voltage(void) {