Diff: vendor/Freescale/KL25Z/hal/pwmout_api.c

Revision:

13:0645d8841f51

Parent:

12:5fa2273de5db

Child:

14:096882eb0961

--- a/vendor/Freescale/KL25Z/hal/pwmout_api.c	Wed Jul 24 11:11:21 2013 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,121 +0,0 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2006-2013 ARM Limited
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#include "pwmout_api.h"
-
-#include "cmsis.h"
-#include "pinmap.h"
-#include "error.h"
-
-static const PinMap PinMap_PWM[] = {
-    // LEDs
-    {LED_RED  , PWM_9 , 3}, // PTB18, TPM2 CH0
-    {LED_GREEN, PWM_10, 3}, // PTB19, TPM2 CH1
-    {LED_BLUE , PWM_2 , 4}, // PTD1 , TPM0 CH1
-
-    // Arduino digital pinout
-    {D0,  PWM_9 , 3}, // PTA1 , TPM2 CH0
-    {D1,  PWM_10, 3}, // PTA2 , TPM2 CH1
-    {D2,  PWM_5 , 4}, // PTD4 , TPM0 CH4
-    {D3,  PWM_7 , 3}, // PTA12, TPM1 CH0
-    {D4,  PWM_2 , 3}, // PTA4 , TPM0 CH1
-    {D5,  PWM_3 , 3}, // PTA5 , TPM0 CH2
-    {D6,  PWM_5 , 3}, // PTC8 , TPM0 CH4
-    {D7,  PWM_6 , 3}, // PTC9 , TPM0 CH5
-    {D8,  PWM_8 , 3}, // PTA13, TPM1 CH1
-    {D9,  PWM_6 , 4}, // PTD5 , TPM0 CH5
-    {D10, PWM_1 , 4}, // PTD0 , TPM0 CH0
-    {D11, PWM_3 , 4}, // PTD2 , TPM0 CH2
-    {D12, PWM_4 , 4}, // PTD3 , TPM0 CH3
-    {D13, PWM_2 , 4}, // PTD1 , TPM0 CH1
-    {NC , NC    , 0}
-};
-
-#define PWM_CLOCK_MHZ       (0.75) // (48)MHz / 64 = (0.75)MHz
-
-void pwmout_init(pwmout_t* obj, PinName pin) {
-    // determine the channel
-    PWMName pwm = (PWMName)pinmap_peripheral(pin, PinMap_PWM);
-    if (pwm == (uint32_t)NC)
-        error("PwmOut pin mapping failed");
-
-    unsigned int port = (unsigned int)pin >> PORT_SHIFT;
-    unsigned int tpm_n = (pwm >> TPM_SHIFT);
-    unsigned int ch_n = (pwm & 0xFF);
-
-    SIM->SCGC5 |= 1 << (SIM_SCGC5_PORTA_SHIFT + port);
-    SIM->SCGC6 |= 1 << (SIM_SCGC6_TPM0_SHIFT + tpm_n);
-    SIM->SOPT2 |= SIM_SOPT2_TPMSRC(1); // Clock source: MCGFLLCLK or MCGPLLCLK
-
-    TPM_Type *tpm = (TPM_Type *)(TPM0_BASE + 0x1000 * tpm_n);
-    tpm->SC = TPM_SC_CMOD(1) | TPM_SC_PS(6); // (48)MHz / 64 = (0.75)MHz
-    tpm->CONTROLS[ch_n].CnSC = (TPM_CnSC_MSB_MASK | TPM_CnSC_ELSB_MASK); /* No Interrupts; High True pulses on Edge Aligned PWM */
-
-    obj->CnV = &tpm->CONTROLS[ch_n].CnV;
-    obj->MOD = &tpm->MOD;
-    obj->CNT = &tpm->CNT;
-
-    // default to 20ms: standard for servos, and fine for e.g. brightness control
-    pwmout_period_ms(obj, 20);
-    pwmout_write    (obj, 0);
-
-    // Wire pinout
-    pinmap_pinout(pin, PinMap_PWM);
-}
-
-void pwmout_free(pwmout_t* obj) {}
-
-void pwmout_write(pwmout_t* obj, float value) {
-    if (value < 0.0) {
-        value = 0.0;
-    } else if (value > 1.0) {
-        value = 1.0;
-    }
-
-    *obj->CnV = (uint32_t)((float)(*obj->MOD) * value);
-    *obj->CNT = 0;
-}
-
-float pwmout_read(pwmout_t* obj) {
-    float v = (float)(*obj->CnV) / (float)(*obj->MOD);
-    return (v > 1.0) ? (1.0) : (v);
-}
-
-void pwmout_period(pwmout_t* obj, float seconds) {
-    pwmout_period_us(obj, seconds * 1000000.0f);
-}
-
-void pwmout_period_ms(pwmout_t* obj, int ms) {
-    pwmout_period_us(obj, ms * 1000);
-}
-
-// Set the PWM period, keeping the duty cycle the same.
-void pwmout_period_us(pwmout_t* obj, int us) {
-    float dc = pwmout_read(obj);
-    *obj->MOD = PWM_CLOCK_MHZ * us;
-    pwmout_write(obj, dc);
-}
-
-void pwmout_pulsewidth(pwmout_t* obj, float seconds) {
-    pwmout_pulsewidth_us(obj, seconds * 1000000.0f);
-}
-
-void pwmout_pulsewidth_ms(pwmout_t* obj, int ms) {
-    pwmout_pulsewidth_us(obj, ms * 1000);
-}
-
-void pwmout_pulsewidth_us(pwmout_t* obj, int us) {
-    *obj->CnV = PWM_CLOCK_MHZ * us;
-}