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bh1750 i2c light sensor driver + pwm cleanup (#330)

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Add bh1750 (I2C light sensor) driver + usage example
This commit is contained in:
andree182 2017-04-01 02:20:37 +02:00 • committed by Ruslan V. Uss
parent 31ef50c9a9
commit b3f658bdbf
7 changed files with 170 additions and 7 deletions
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12
extras/pwm/pwm.c
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@ -29,7 +29,7 @@ typedef struct pwmInfoDefinition
uint8_t running;
uint16_t freq;
uint16_t dutyCicle;
uint16_t dutyCycle;
/* private */
uint32_t _maxLoad;
@ -66,7 +66,7 @@ static void frc1_interrupt_handler(void)
pwmInfo._step = step;
}
void pwm_init(uint8_t npins, uint8_t* pins)
void pwm_init(uint8_t npins, const uint8_t* pins)
{
/* Assert number of pins is correct */
if (npins > MAX_PWM_PINS)
@ -127,10 +127,10 @@ void pwm_set_duty(uint16_t duty)
{
bool output;
pwmInfo.dutyCicle = duty;
pwmInfo.dutyCycle = duty;
if (duty > 0 && duty < UINT16_MAX) {
pwm_restart();
return;
return;
}
// 0% and 100% duty cycle are special cases: constant output.
@ -139,7 +139,7 @@ void pwm_set_duty(uint16_t duty)
output = (duty == UINT16_MAX);
for (uint8_t i = 0; i < pwmInfo.usedPins; ++i)
{
gpio_write(pwmInfo.pins[i].pin, output);
gpio_write(pwmInfo.pins[i].pin, output);
}
}
@ -154,7 +154,7 @@ void pwm_restart()
void pwm_start()
{
pwmInfo._onLoad = pwmInfo.dutyCicle * pwmInfo._maxLoad / UINT16_MAX;
pwmInfo._onLoad = pwmInfo.dutyCycle * pwmInfo._maxLoad / UINT16_MAX;
pwmInfo._offLoad = pwmInfo._maxLoad - pwmInfo._onLoad;
pwmInfo._step = PERIOD_ON;