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Update LightMeter

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This commit is contained in:
MX
2023-07-22 20:30:21 +03:00
parent 0d84dceaae
commit 5c5e68a5ce
13 changed files with 402 additions and 24 deletions
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16
applications/external/lightmeter/lib/MAX44009/MAX44009.c vendored
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@@ -2,13 +2,20 @@
#include <math.h>
#include <furi.h>
uint8_t max44009_addr = MAX44009_ADDR;
void max44009_init() {
furi_hal_i2c_acquire(I2C_BUS);
furi_hal_i2c_write_reg_8(I2C_BUS, MAX44009_ADDR,
MAX44009_REG_CONFIG, MAX44009_REG_CONFIG_CONT_MODE, I2C_TIMEOUT);
furi_hal_i2c_write_reg_8(
I2C_BUS, max44009_addr, MAX44009_REG_CONFIG, MAX44009_REG_CONFIG_CONT_MODE, I2C_TIMEOUT);
furi_hal_i2c_release(I2C_BUS);
}
void max44009_init_with_addr(uint8_t addr) {
max44009_addr = (addr << 1);
return max44009_init();
}
int max44009_read_light(float* result) {
uint8_t data_one = 0;
uint8_t exp, mantissa;
@@ -18,10 +25,11 @@ int max44009_read_light(float* result) {
furi_hal_i2c_read_reg_8(I2C_BUS, MAX44009_ADDR, MAX44009_REG_LUX_HI, &data_one, I2C_TIMEOUT);
exp = (data_one & MAX44009_REG_LUX_HI_EXP_MASK) >> 4;
mantissa = (data_one & MAX44009_REG_LUX_HI_MANT_HI_MASK) << 4;
status = furi_hal_i2c_read_reg_8(I2C_BUS, MAX44009_ADDR, MAX44009_REG_LUX_LO, &data_one, I2C_TIMEOUT);
status = furi_hal_i2c_read_reg_8(
I2C_BUS, MAX44009_ADDR, MAX44009_REG_LUX_LO, &data_one, I2C_TIMEOUT);
mantissa |= (data_one & MAX44009_REG_LUX_LO_MANT_LO_MASK);
furi_hal_i2c_release(I2C_BUS);
*result = (float)pow(2, exp) * mantissa * 0.045;
FURI_LOG_D("MAX44009", "exp %d, mant %d, lux %f", exp, mantissa, (double)*result);
return status;
}
}