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Merge branch 'toyowata-master'

pull/1824/head
0xc0170 2016-05-23 15:06:45 +01:00
parent f74fc12313 9c525e2f71
commit b395dd5956
1 changed files with 8 additions and 0 deletions
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8
hal/targets/hal/TARGET_NXP/TARGET_LPC81X/pwmout_api.c
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@ -152,10 +152,18 @@ void pwmout_write(pwmout_t* obj, float value) {
uint32_t t_off = (uint32_t)((float)(obj->pwm->MATCHREL[0].U) * value);
obj->pwm->MATCHREL[(obj->pwm_ch) + 1].U = t_off; // New endtime
// Clear OxRES (conflict resolution register) bit first, effect of simultaneous set and clear on output x
int offset = (obj->pwm_ch * 2);
obj->pwm->RES &= ~(0x3 << offset);
if (value == 0.0f) { // duty is 0%
// Clear output
obj->pwm->RES |= (0x2 << offset);
// Set CLR event to be same as SET event, makes output to be 0 (low)
obj->pwm->OUT[(obj->pwm_ch)].CLR = (1 << 0);
} else {
// Set output
obj->pwm->RES |= (0x1 << offset);
// Use normal CLR event (current SCT ch + 1)
obj->pwm->OUT[(obj->pwm_ch)].CLR = (1 << ((obj->pwm_ch) + 1));
}