1 /*
2 * Copyright 2018 NXP
3 * All rights reserved.
4 *
5 *
6 * SPDX-License-Identifier: BSD-3-Clause
7 */
8
9 #include "fsl_common.h"
10 #include "fsl_adapter_pwm.h"
11 #include "fsl_ctimer.h"
12
13 /************************************************************************************
14 *************************************************************************************
15 * Private prototypes
16 *************************************************************************************
17 ************************************************************************************/
18 typedef struct _hal_pwm_handle_struct_t
19 {
20 uint32_t pwmClock_Hz;
21 uint8_t instance;
22 uint8_t pwmLevelSelect;
23 } hal_pwm_handle_struct_t;
24
25 /************************************************************************************
26 *************************************************************************************
27 * Private memory declarations
28 *************************************************************************************
29 ************************************************************************************/
30
31 static CTIMER_Type *const s_cTimerBase[] = CTIMER_BASE_PTRS;
32 static uint8_t s_pwmUsedChannel[sizeof(s_cTimerBase) / sizeof(s_cTimerBase[0])] = {0};
33
34 /************************************************************************************
35 *************************************************************************************
36 * Public functions
37 *************************************************************************************
38 ************************************************************************************/
HAL_PwmInit(hal_pwm_handle_t halPwmHandle,uint8_t instance,uint32_t srcClock_Hz)39 hal_pwm_status_t HAL_PwmInit(hal_pwm_handle_t halPwmHandle, uint8_t instance, uint32_t srcClock_Hz)
40 {
41 ctimer_config_t ctimerInfo;
42 hal_pwm_handle_struct_t *halPwmState = halPwmHandle;
43
44 assert(halPwmHandle);
45 assert(instance < (uint8_t)FSL_FEATURE_SOC_CTIMER_COUNT);
46 assert(sizeof(hal_pwm_handle_struct_t) == HAL_PWM_HANDLE_SIZE);
47 halPwmState->pwmClock_Hz = srcClock_Hz;
48 halPwmState->instance = instance;
49
50 /* Initialize CTIMER module */
51 if (0U == s_pwmUsedChannel[instance])
52 {
53 CTIMER_GetDefaultConfig(&ctimerInfo);
54 CTIMER_Init(s_cTimerBase[instance], &ctimerInfo);
55 }
56
57 return kStatus_HAL_PwmSuccess;
58 }
59
HAL_PwmDeinit(hal_pwm_handle_t halPwmHandle)60 void HAL_PwmDeinit(hal_pwm_handle_t halPwmHandle)
61 {
62 hal_pwm_handle_struct_t *halPwmState = halPwmHandle;
63
64 assert(halPwmHandle);
65 assert(halPwmState->instance < (uint8_t)FSL_FEATURE_SOC_CTIMER_COUNT);
66
67 /* Decrease the channel counter for the instance */
68 if (s_pwmUsedChannel[halPwmState->instance] > 0U)
69 {
70 s_pwmUsedChannel[halPwmState->instance] -= 1U;
71 }
72
73 /* DeInitialize tpm module */
74 if (0U == s_pwmUsedChannel[halPwmState->instance])
75 {
76 CTIMER_Deinit(s_cTimerBase[halPwmState->instance]);
77 }
78 }
79
80 /*! -------------------------------------------------------------------------
81 * \brief Pwm setup.
82 *---------------------------------------------------------------------------*/
HAL_PwmSetupPwm(hal_pwm_handle_t halPwmHandle,uint8_t channel,hal_pwm_setup_config_t * setupConfig)83 hal_pwm_status_t HAL_PwmSetupPwm(hal_pwm_handle_t halPwmHandle, uint8_t channel, hal_pwm_setup_config_t *setupConfig)
84 {
85 hal_pwm_handle_struct_t *halPwmState = halPwmHandle;
86
87 assert(halPwmHandle);
88 assert(channel <= (uint8_t)kCTIMER_Capture_2);
89 assert(halPwmState->instance < (uint8_t)FSL_FEATURE_SOC_CTIMER_COUNT);
90 assert(setupConfig);
91
92 halPwmState->pwmLevelSelect = (uint8_t)(setupConfig->level);
93 if (kStatus_Success != CTIMER_SetupPwm(s_cTimerBase[halPwmState->instance], kCTIMER_Match_3,
94 (ctimer_match_t)channel, setupConfig->dutyCyclePercent,
95 setupConfig->pwmFreq_Hz, halPwmState->pwmClock_Hz, false))
96 {
97 return kStatus_HAL_PwmFail;
98 }
99
100 CTIMER_StartTimer(s_cTimerBase[halPwmState->instance]);
101
102 /* Increase the channel counter for the instance */
103 s_pwmUsedChannel[halPwmState->instance] += 1U;
104
105 return kStatus_HAL_PwmSuccess;
106 }
107
108 /*! -------------------------------------------------------------------------
109 * \brief update the Duty cycle of pwm
110 *---------------------------------------------------------------------------*/
HAL_PwmUpdateDutycycle(hal_pwm_handle_t halPwmHandle,uint8_t channel,hal_pwm_mode_t mode,uint8_t dutyCyclePercent)111 hal_pwm_status_t HAL_PwmUpdateDutycycle(hal_pwm_handle_t halPwmHandle,
112 uint8_t channel,
113 hal_pwm_mode_t mode,
114 uint8_t dutyCyclePercent)
115 {
116 hal_pwm_handle_struct_t *halPwmState = halPwmHandle;
117 uint8_t duty = 0;
118
119 assert(halPwmHandle);
120 assert(channel <= (uint8_t)kCTIMER_Capture_2);
121 assert(halPwmState->instance < (uint8_t)FSL_FEATURE_SOC_CTIMER_COUNT);
122 if (halPwmState->pwmLevelSelect == (uint8_t)kHAL_PwmHighTrue)
123 {
124 duty = dutyCyclePercent;
125 }
126 else
127 {
128 duty = (uint8_t)100 - dutyCyclePercent;
129 }
130 CTIMER_UpdatePwmDutycycle(s_cTimerBase[halPwmState->instance], kCTIMER_Match_3, (ctimer_match_t)channel, duty);
131 return kStatus_HAL_PwmSuccess;
132 }
133
