forked
targets/TARGET_Realtek/TARGET_AMEBA/pwmout_api.c@170:19eb464bc2be, 2017-08-03 (annotated)
- Committer:
- Kojto
- Date:
- Thu Aug 03 13:13:39 2017 +0100
- Revision:
- 170:19eb464bc2be
- Parent:
- 167:e84263d55307
This updates the lib to the mbed lib v 148
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
AnnaBridge | 167:e84263d55307 | 1 | /* mbed Microcontroller Library |
AnnaBridge | 167:e84263d55307 | 2 | * Copyright (c) 2013-2016 Realtek Semiconductor Corp. |
AnnaBridge | 167:e84263d55307 | 3 | * |
AnnaBridge | 167:e84263d55307 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
AnnaBridge | 167:e84263d55307 | 5 | * you may not use this file except in compliance with the License. |
AnnaBridge | 167:e84263d55307 | 6 | * You may obtain a copy of the License at |
AnnaBridge | 167:e84263d55307 | 7 | * |
AnnaBridge | 167:e84263d55307 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
AnnaBridge | 167:e84263d55307 | 9 | * |
AnnaBridge | 167:e84263d55307 | 10 | * Unless required by applicable law or agreed to in writing, software |
AnnaBridge | 167:e84263d55307 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
AnnaBridge | 167:e84263d55307 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
AnnaBridge | 167:e84263d55307 | 13 | * See the License for the specific language governing permissions and |
AnnaBridge | 167:e84263d55307 | 14 | * limitations under the License. |
AnnaBridge | 167:e84263d55307 | 15 | */ |
AnnaBridge | 167:e84263d55307 | 16 | |
AnnaBridge | 167:e84263d55307 | 17 | #include "device.h" |
AnnaBridge | 167:e84263d55307 | 18 | #include "objects.h" |
AnnaBridge | 167:e84263d55307 | 19 | #include "pinmap.h" |
AnnaBridge | 167:e84263d55307 | 20 | |
AnnaBridge | 167:e84263d55307 | 21 | #if DEVICE_PWMOUT |
AnnaBridge | 167:e84263d55307 | 22 | |
AnnaBridge | 167:e84263d55307 | 23 | #ifdef CONFIG_PWM_EN |
AnnaBridge | 167:e84263d55307 | 24 | #include "pwmout_api.h" |
AnnaBridge | 167:e84263d55307 | 25 | |
AnnaBridge | 167:e84263d55307 | 26 | static const PinMap PinMap_PWM[] = { |
AnnaBridge | 167:e84263d55307 | 27 | {PB_4, RTL_PIN_PERI(PWM0, 0, S0), RTL_PIN_FUNC(PWM0, S0)}, |
AnnaBridge | 167:e84263d55307 | 28 | {PB_5, RTL_PIN_PERI(PWM1, 1, S0), RTL_PIN_FUNC(PWM1, S0)}, |
AnnaBridge | 167:e84263d55307 | 29 | {PB_6, RTL_PIN_PERI(PWM2, 2, S0), RTL_PIN_FUNC(PWM2, S0)}, |
AnnaBridge | 167:e84263d55307 | 30 | {PB_7, RTL_PIN_PERI(PWM3, 3, S0), RTL_PIN_FUNC(PWM3, S0)}, |
AnnaBridge | 167:e84263d55307 | 31 | |
AnnaBridge | 167:e84263d55307 | 32 | {PC_0, RTL_PIN_PERI(PWM0, 0, S1), RTL_PIN_FUNC(PWM0, S1)}, |
AnnaBridge | 167:e84263d55307 | 33 | {PC_1, RTL_PIN_PERI(PWM1, 1, S1), RTL_PIN_FUNC(PWM1, S1)}, |
AnnaBridge | 167:e84263d55307 | 34 | {PC_2, RTL_PIN_PERI(PWM2, 2, S1), RTL_PIN_FUNC(PWM2, S1)}, |
AnnaBridge | 167:e84263d55307 | 35 | {PC_3, RTL_PIN_PERI(PWM3, 3, S1), RTL_PIN_FUNC(PWM3, S1)}, |
AnnaBridge | 167:e84263d55307 | 36 | |
AnnaBridge | 167:e84263d55307 | 37 | {PD_3, RTL_PIN_PERI(PWM0, 0, S2), RTL_PIN_FUNC(PWM0, S2)}, |
AnnaBridge | 167:e84263d55307 | 38 | {PD_4, RTL_PIN_PERI(PWM1, 1, S2), RTL_PIN_FUNC(PWM1, S2)}, |
AnnaBridge | 167:e84263d55307 | 39 | {PD_5, RTL_PIN_PERI(PWM2, 2, S2), RTL_PIN_FUNC(PWM2, S2)}, |
AnnaBridge | 167:e84263d55307 | 40 | {PD_6, RTL_PIN_PERI(PWM3, 3, S2), RTL_PIN_FUNC(PWM3, S2)}, |
AnnaBridge | 167:e84263d55307 | 41 | |
AnnaBridge | 167:e84263d55307 | 42 | {PE_0, RTL_PIN_PERI(PWM0, 0, S3), RTL_PIN_FUNC(PWM0, S3)}, |
AnnaBridge | 167:e84263d55307 | 43 | {PE_1, RTL_PIN_PERI(PWM1, 1, S3), RTL_PIN_FUNC(PWM1, S3)}, |
AnnaBridge | 167:e84263d55307 | 44 | {PE_2, RTL_PIN_PERI(PWM2, 2, S3), RTL_PIN_FUNC(PWM2, S3)}, |
AnnaBridge | 167:e84263d55307 | 45 | {PE_3, RTL_PIN_PERI(PWM3, 3, S3), RTL_PIN_FUNC(PWM3, S3)}, |
AnnaBridge | 167:e84263d55307 | 46 | |
AnnaBridge | 167:e84263d55307 | 47 | {NC, NC, 0} |
AnnaBridge | 167:e84263d55307 | 48 | }; |
AnnaBridge | 167:e84263d55307 | 49 | |
AnnaBridge | 167:e84263d55307 | 50 | void pwmout_init(pwmout_t* obj, PinName pin) |
AnnaBridge | 167:e84263d55307 | 51 | { |
AnnaBridge | 167:e84263d55307 | 52 | uint32_t peripheral; |
AnnaBridge | 167:e84263d55307 | 53 | u32 pwm_idx; |
AnnaBridge | 167:e84263d55307 | 54 | u32 pin_sel; |
AnnaBridge | 167:e84263d55307 | 55 | |
AnnaBridge | 167:e84263d55307 | 56 | DBG_PWM_INFO("%s: Init PWM for pin(0x%x)\n", __FUNCTION__, pin); |
AnnaBridge | 167:e84263d55307 | 57 | |
AnnaBridge | 167:e84263d55307 | 58 | // Get the peripheral name from the pin and assign it to the object |
AnnaBridge | 167:e84263d55307 | 59 | peripheral = pinmap_peripheral(pin, PinMap_PWM); |
AnnaBridge | 167:e84263d55307 | 60 | |
AnnaBridge | 167:e84263d55307 | 61 | if (unlikely(peripheral == NC)) { |
AnnaBridge | 167:e84263d55307 | 62 | DBG_PWM_ERR("%s: Cannot find matched pwm for this pin(0x%x)\n", __FUNCTION__, pin); |
AnnaBridge | 167:e84263d55307 | 63 | return; |
AnnaBridge | 167:e84263d55307 | 64 | } |
AnnaBridge | 167:e84263d55307 | 65 | |
AnnaBridge | 167:e84263d55307 | 66 | pwm_idx = RTL_GET_PERI_IDX(peripheral); |
AnnaBridge | 167:e84263d55307 | 67 | pin_sel = RTL_GET_PERI_SEL(peripheral); |
AnnaBridge | 167:e84263d55307 | 68 | |
AnnaBridge | 167:e84263d55307 | 69 | obj->pwm_idx = pwm_idx; |
AnnaBridge | 167:e84263d55307 | 70 | obj->pin_sel = pin_sel; |
AnnaBridge | 167:e84263d55307 | 71 | obj->period = 0; |
AnnaBridge | 167:e84263d55307 | 72 | obj->pulse = 0; |
AnnaBridge | 167:e84263d55307 | 73 | _memset((void *)&obj->pwm_hal_adp, 0, sizeof(HAL_PWM_ADAPTER)); |
AnnaBridge | 167:e84263d55307 | 74 | if (HAL_OK != HAL_Pwm_Init(&obj->pwm_hal_adp, pwm_idx, pin_sel)) { |
AnnaBridge | 167:e84263d55307 | 75 | DBG_PWM_ERR("pwmout_init Err!\n"); |
AnnaBridge | 167:e84263d55307 | 76 | return; |
AnnaBridge | 167:e84263d55307 | 77 | } |
AnnaBridge | 167:e84263d55307 | 78 | pwmout_period_us(obj, 20000); // 20 ms per default |
AnnaBridge | 167:e84263d55307 | 79 | HAL_Pwm_Enable(&obj->pwm_hal_adp); |
AnnaBridge | 167:e84263d55307 | 80 | } |
AnnaBridge | 167:e84263d55307 | 81 | |
AnnaBridge | 167:e84263d55307 | 82 | void pwmout_free(pwmout_t* obj) |
AnnaBridge | 167:e84263d55307 | 83 | { |
AnnaBridge | 167:e84263d55307 | 84 | HAL_Pwm_Disable(&obj->pwm_hal_adp); |
AnnaBridge | 167:e84263d55307 | 85 | } |
AnnaBridge | 167:e84263d55307 | 86 | |
AnnaBridge | 167:e84263d55307 | 87 | void pwmout_write(pwmout_t* obj, float value) |
AnnaBridge | 167:e84263d55307 | 88 | { |
AnnaBridge | 167:e84263d55307 | 89 | if (value < (float)0.0) { |
AnnaBridge | 167:e84263d55307 | 90 | value = 0.0; |
AnnaBridge | 167:e84263d55307 | 91 | } else if (value > (float)1.0) { |
AnnaBridge | 167:e84263d55307 | 92 | value = 1.0; |
AnnaBridge | 167:e84263d55307 | 93 | } |
AnnaBridge | 167:e84263d55307 | 94 | |
AnnaBridge | 167:e84263d55307 | 95 | obj->pulse = (uint32_t)((float)obj->period * value); |
AnnaBridge | 167:e84263d55307 | 96 | HAL_Pwm_SetDuty(&obj->pwm_hal_adp, obj->period, obj->pulse); |
AnnaBridge | 167:e84263d55307 | 97 | } |
AnnaBridge | 167:e84263d55307 | 98 | |
AnnaBridge | 167:e84263d55307 | 99 | float pwmout_read(pwmout_t* obj) |
AnnaBridge | 167:e84263d55307 | 100 | { |
AnnaBridge | 167:e84263d55307 | 101 | float value = 0; |
AnnaBridge | 167:e84263d55307 | 102 | if (obj->period > 0) { |
AnnaBridge | 167:e84263d55307 | 103 | value = (float)(obj->pulse) / (float)(obj->period); |
AnnaBridge | 167:e84263d55307 | 104 | } |
AnnaBridge | 167:e84263d55307 | 105 | return ((value > (float)1.0) ? (float)(1.0) : (value)); |
AnnaBridge | 167:e84263d55307 | 106 | } |
AnnaBridge | 167:e84263d55307 | 107 | |
AnnaBridge | 167:e84263d55307 | 108 | void pwmout_period(pwmout_t* obj, float seconds) |
AnnaBridge | 167:e84263d55307 | 109 | { |
AnnaBridge | 167:e84263d55307 | 110 | pwmout_period_us(obj, (int)(seconds * 1000000.0f)); |
AnnaBridge | 167:e84263d55307 | 111 | } |
AnnaBridge | 167:e84263d55307 | 112 | |
AnnaBridge | 167:e84263d55307 | 113 | void pwmout_period_ms(pwmout_t* obj, int ms) |
AnnaBridge | 167:e84263d55307 | 114 | { |
AnnaBridge | 167:e84263d55307 | 115 | pwmout_period_us(obj, (int)(ms * 1000)); |
AnnaBridge | 167:e84263d55307 | 116 | } |
AnnaBridge | 167:e84263d55307 | 117 | |
AnnaBridge | 167:e84263d55307 | 118 | void pwmout_period_us(pwmout_t* obj, int us) |
AnnaBridge | 167:e84263d55307 | 119 | { |
AnnaBridge | 167:e84263d55307 | 120 | float dc = pwmout_read(obj); |
AnnaBridge | 167:e84263d55307 | 121 | |
AnnaBridge | 167:e84263d55307 | 122 | obj->period = us; |
AnnaBridge | 167:e84263d55307 | 123 | // Set duty cycle again |
AnnaBridge | 167:e84263d55307 | 124 | pwmout_write(obj, dc); |
AnnaBridge | 167:e84263d55307 | 125 | } |
AnnaBridge | 167:e84263d55307 | 126 | |
AnnaBridge | 167:e84263d55307 | 127 | void pwmout_pulsewidth(pwmout_t* obj, float seconds) |
AnnaBridge | 167:e84263d55307 | 128 | { |
AnnaBridge | 167:e84263d55307 | 129 | pwmout_pulsewidth_us(obj, (int)(seconds * 1000000.0f)); |
AnnaBridge | 167:e84263d55307 | 130 | } |
AnnaBridge | 167:e84263d55307 | 131 | |
AnnaBridge | 167:e84263d55307 | 132 | void pwmout_pulsewidth_ms(pwmout_t* obj, int ms) |
AnnaBridge | 167:e84263d55307 | 133 | { |
AnnaBridge | 167:e84263d55307 | 134 | pwmout_pulsewidth_us(obj, ms * 1000); |
AnnaBridge | 167:e84263d55307 | 135 | } |
AnnaBridge | 167:e84263d55307 | 136 | |
AnnaBridge | 167:e84263d55307 | 137 | void pwmout_pulsewidth_us(pwmout_t* obj, int us) |
AnnaBridge | 167:e84263d55307 | 138 | { |
AnnaBridge | 167:e84263d55307 | 139 | float value = (float)us / (float)obj->period; |
AnnaBridge | 167:e84263d55307 | 140 | pwmout_write(obj, value); |
AnnaBridge | 167:e84263d55307 | 141 | } |
AnnaBridge | 167:e84263d55307 | 142 | |
AnnaBridge | 167:e84263d55307 | 143 | #endif // #ifdef CONFIG_PWM_EN |
AnnaBridge | 167:e84263d55307 | 144 | #endif // #if DEVICE_PWMOUT |