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PWM - mux addition

pull/144/head
0xc0170 2014-01-08 10:58:51 +01:00
parent a6e45b7d38
commit 889952790f
1 changed files with 18 additions and 10 deletions
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28
libraries/mbed/targets/hal/TARGET_Freescale/TARGET_K20D5M/pwmout_api.c
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@ -21,17 +21,30 @@
static const PinMap PinMap_PWM[] = {
// LEDs
{LED_RED , PWM_3 , 3}, // PTC3, FTM0 CH2
{LED_GREEN, PWM_5, 3}, // PTD4, FTM0 CH4
{LED_RED , PWM_3 , 4}, // PTC3, FTM0 CH2
{LED_GREEN, PWM_5, 4}, // PTD4, FTM0 CH4
{LED_BLUE , PWM_8 , 3}, // PTA2, FTM0 CH7
// Arduino digital pinout
{D3, PWM_5 , 3}, // PTD4, FTM0 CH4
{D3, PWM_5 , 4}, // PTD4, FTM0 CH4
{D5, PWM_7 , 3}, // PTA1, FTM0 CH6
{D6, PWM_3 , 3}, // PTC3, FTM0 CH2
{D9, PWM_8 , 4}, // PTD2, FTM0 CH7
{D6, PWM_3 , 4}, // PTC3, FTM0 CH2
{D9, PWM_6 , 4}, // PTD5, FTM0 CH6
{D10, PWM_2 , 4}, // PTC2, FTM0 CH1
{PTA0, PWM_6 , 3}, // PTA0, FTM0 CH5
{PTA3, PWM_0 , 3}, // PTA3, FTM0 CH0
{PTA4, PWM_1 , 3}, // PTA4, FTM0 CH1
{PTA5, PWM_3 , 3}, // PTA5, FTM0 CH2
{PTA12, PWM_9 , 3}, // PTA12, FTM1 CH0
{PTA13, PWM_10, 3}, // PTA13, FTM1 CH1
{PTB0, PWM_9 , 3}, // PTB0, FTM1 CH0
{PTB1, PWM_10, 3}, // PTB1, FTM1 CH1
{PTC1, PWM_0 , 4}, // PTC1, FTM0 CH0
{PTD4, PWM_4 , 4}, // PTD4, FTM0 CH3
{PTD6, PWM_7 , 4}, // PTD6, FTM0 CH6
{PTD7, PWM_8 , 4}, // PTD7, FTM0 CH7
{NC , NC , 0}
};
@ -51,7 +64,6 @@ void pwmout_init(pwmout_t* obj, PinName pin) {
SIM->SCGC6 |= 1 << (SIM_SCGC6_FTM0_SHIFT + ftm_n);
FTM_Type *ftm = (FTM_Type *)(FTM0_BASE + 0x1000 * ftm_n);
ftm->MODE |= FTM_MODE_WPDIS_MASK; //write protection disabled
ftm->CONF |= FTM_CONF_BDMMODE(3);
ftm->SC = FTM_SC_CLKS(1) | FTM_SC_PS(6); // (48)MHz / 64 = (0.75)MHz
ftm->CONTROLS[ch_n].CnSC = (FTM_CnSC_MSB_MASK | FTM_CnSC_ELSB_MASK); /* No Interrupts; High True pulses on Edge Aligned PWM */
@ -59,7 +71,6 @@ void pwmout_init(pwmout_t* obj, PinName pin) {
obj->CnV = &ftm->CONTROLS[ch_n].CnV;
obj->MOD = &ftm->MOD;
obj->CNT = &ftm->CNT;
obj->PWMLOAD = &ftm->PWMLOAD;
// default to 20ms: standard for servos, and fine for e.g. brightness control
pwmout_period_ms(obj, 20);
@ -79,8 +90,6 @@ void pwmout_write(pwmout_t* obj, float value) {
}
*obj->CnV = (uint32_t)((float)(*obj->MOD) * value);
*obj->PWMLOAD |= FTM_PWMLOAD_LDOK_MASK;
*obj->CNT = 0;
}
float pwmout_read(pwmout_t* obj) {
@ -113,5 +122,4 @@ void pwmout_pulsewidth_ms(pwmout_t* obj, int ms) {
void pwmout_pulsewidth_us(pwmout_t* obj, int us) {
*obj->CnV = PWM_CLOCK_MHZ * us;
*obj->PWMLOAD |= FTM_PWMLOAD_LDOK_MASK;
}