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Ensure that PWM=1 is resolved correctly

pull/3503/head
Richard Lin 2016-12-24 23:17:16 -08:00
parent 6e7ee0e51e
commit 9a8cd059f8
1 changed files with 4 additions and 1 deletions
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5
targets/TARGET_NXP/TARGET_LPC15XX/pwmout_api.c
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@ -91,6 +91,9 @@ void pwmout_init(pwmout_t* obj, PinName pin) {
pwm->OUT0_SET = (1 << 0); // event 0
pwm->OUT0_CLR = (1 << 1); // event 1
// Resolve conflicts on output 0 to set output
// This allows duty cycle = 1.0 to work, where the MATCH registers for set and clear are equal
pwm->RES = 0x01;
pwm->EV0_CTRL = (1 << 12);
pwm->EV0_STATE = 0xFFFFFFFF;
@ -169,7 +172,7 @@ void pwmout_period_us(pwmout_t* obj, int us) {
// Halt the timer and force the output low
pwm->CTRL |= (1 << 2) | (1 << 3);
pwm->OUTPUT = 0x00000000;
// Ensure the new period will take immediate effect when the timer is un-halted
pwm->MATCH0 = pwm->MATCHREL0;
}