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This commit is contained in:
LeeChunHei 2021-02-13 17:50:45 +08:00 committed by LeeChunHei
parent a4dd106d49
commit 18ff046e7f
2 changed files with 272 additions and 3 deletions
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1
bsp/imxrt/libraries/MIMXRT1050/SConscript
View File

@ -34,6 +34,7 @@ if GetDepend(['BSP_USING_HWTIMER']) or GetDepend(['BSP_USING_PWM']):
if GetDepend(['BSP_USING_PWM']):
src += ['MIMXRT1052/drivers/fsl_pwm.c']
src += ['MIMXRT1052/drivers/fsl_qtmr.c']
if GetDepend(['BSP_USING_RTC']):
src += ['MIMXRT1052/drivers/fsl_snvs_hp.c']

274
bsp/imxrt/libraries/drivers/drv_pwm.c
View File

@ -16,8 +16,12 @@
#if !defined(BSP_USING_PWM1_CH0) && !defined(BSP_USING_PWM1_CH1) && !defined(BSP_USING_PWM1_CH2) && !defined(BSP_USING_PWM1_CH3) && \
!defined(BSP_USING_PWM2_CH0) && !defined(BSP_USING_PWM2_CH1) && !defined(BSP_USING_PWM2_CH2) && !defined(BSP_USING_PWM2_CH3) && \
!defined(BSP_USING_PWM3_CH0) && !defined(BSP_USING_PWM3_CH1) && !defined(BSP_USING_PWM3_CH2) && !defined(BSP_USING_PWM3_CH3) && \
!defined(BSP_USING_PWM4_CH0) && !defined(BSP_USING_PWM4_CH1) && !defined(BSP_USING_PWM4_CH2) && !defined(BSP_USING_PWM4_CH3)
#error "Please define at least one BSP_USING_PWMx_CHx"
!defined(BSP_USING_PWM4_CH0) && !defined(BSP_USING_PWM4_CH1) && !defined(BSP_USING_PWM4_CH2) && !defined(BSP_USING_PWM4_CH3) && \
!defined(BSP_USING_QTMR1_CH0) && !defined(BSP_USING_QTMR1_CH1) && !defined(BSP_USING_QTMR1_CH2) && !defined(BSP_USING_QTMR1_CH3) && \
!defined(BSP_USING_QTMR2_CH0) && !defined(BSP_USING_QTMR2_CH1) && !defined(BSP_USING_QTMR2_CH2) && !defined(BSP_USING_QTMR2_CH3) && \
!defined(BSP_USING_QTMR3_CH0) && !defined(BSP_USING_QTMR3_CH1) && !defined(BSP_USING_QTMR3_CH2) && !defined(BSP_USING_QTMR3_CH3) && \
!defined(BSP_USING_QTMR4_CH0) && !defined(BSP_USING_QTMR4_CH1) && !defined(BSP_USING_QTMR4_CH2) && !defined(BSP_USING_QTMR4_CH3)
#error "Please define at least one BSP_USING_PWMx_CHx or BSP_USING_QTMRx_CHx"
#endif
#define LOG_TAG "drv.pwm"
@ -25,6 +29,9 @@
#include <rtdevice.h>
#include "fsl_pwm.h"
#if defined(FSL_FEATURE_SOC_TMR_COUNT) && FSL_FEATURE_SOC_TMR_COUNT > 0
#include "fsl_qtmr.h"
#endif
#include "drv_pwm.h"
#define DEFAULT_PRE 5
@ -317,6 +324,224 @@ static rt_err_t imxrt_pwm4_init(PWM_Type *base)
#endif /* BSP_USING_PWM4 */
static rt_err_t imxrt_drv_qtmr_control(struct rt_device_pwm *device, int cmd, void *arg);
static struct rt_pwm_ops imxrt_drv_qtmr_ops =
{
.control = imxrt_drv_qtmr_control
};
static rt_err_t imxrt_drv_qtmr_enable(struct rt_device_pwm *device, struct rt_pwm_configuration *configuration, rt_bool_t enable)
{
TMR_Type *base;
base = (TMR_Type *)device->parent.user_data;
if (!enable)
{
QTMR_StopTimer(base, configuration->channel);
base->CHANNEL[configuration->channel].SCTRL |= (TMR_SCTRL_FORCE_MASK | TMR_SCTRL_OEN_MASK);
}
else
{
QTMR_StartTimer(base, configuration->channel, kQTMR_PriSrcRiseEdge);
}
return RT_EOK;
}
static rt_err_t imxrt_drv_qtmr_get(struct rt_device_pwm *device, struct rt_pwm_configuration *configuration)
{
TMR_Type *base;
rt_uint32_t high_count, low_count, clk_divider, clk_freq;
base = (TMR_Type *)device->parent.user_data;
low_count = base->CHANNEL[configuration->channel].COMP1;
high_count = base->CHANNEL[configuration->channel].COMP2;
clk_divider = 1 << (((base->CHANNEL[configuration->channel].CTRL & TMR_CTRL_PCS_MASK) >> TMR_CTRL_PCS_SHIFT) - 8);
clk_freq = CLOCK_GetFreq(kCLOCK_IpgClk) / clk_divider;
configuration->period = 1000000000 / clk_freq * (high_count + low_count);
configuration->pulse = 1000000000 / clk_freq * high_count;
return RT_EOK;
}
static rt_err_t imxrt_drv_qtmr_set(struct rt_device_pwm *device, struct rt_pwm_configuration *configuration)
{
RT_ASSERT(configuration->period > 0);
RT_ASSERT(configuration->pulse <= configuration->period);
TMR_Type *base = (TMR_Type *)device->parent.user_data;
rt_size_t clk_freq = CLOCK_GetFreq(kCLOCK_IpgClk) / (1 << (((base->CHANNEL[configuration->channel].CTRL & TMR_CTRL_PCS_MASK) >> TMR_CTRL_PCS_SHIFT) - 8));
rt_size_t current_period_count = base->CHANNEL[configuration->channel].CMPLD1 + base->CHANNEL[configuration->channel].CMPLD2;
rt_size_t period_count = clk_freq / (1000000000 / configuration->period);
if (current_period_count == period_count)
{
rt_size_t high_count = period_count * configuration->pulse / configuration->period;
rt_size_t low_count = period_count - high_count;
base->CHANNEL[configuration->channel].CMPLD1 = (uint16_t)low_count;
base->CHANNEL[configuration->channel].CMPLD2 = (uint16_t)high_count;
}
else
{
rt_bool_t timer_is_on = base->CHANNEL[configuration->channel].CTRL & TMR_CTRL_CM_MASK;
rt_uint8_t duty = configuration->pulse * 100 / configuration->period;
QTMR_StopTimer(base, configuration->channel);
if (kStatus_Success != QTMR_SetupPwm(base, configuration->channel, 1000000000 / configuration->period, duty, DEFAULT_POLARITY, clk_freq))
{
LOG_E(LOG_TAG" setup pwm failed \n");
return RT_ERROR;
}
if (timer_is_on)
{
QTMR_StartTimer(base, configuration->channel, kQTMR_PriSrcRiseEdge);
}
}
return RT_EOK;
}
static rt_err_t imxrt_drv_qtmr_control(struct rt_device_pwm *device, int cmd, void *arg)
{
struct rt_pwm_configuration *configuration = (struct rt_pwm_configuration *)arg;
switch (cmd)
{
case PWM_CMD_ENABLE:
return imxrt_drv_qtmr_enable(device, configuration, RT_TRUE);
case PWM_CMD_DISABLE:
return imxrt_drv_qtmr_enable(device, configuration, RT_FALSE);
case PWM_CMD_SET:
return imxrt_drv_qtmr_set(device, configuration);
case PWM_CMD_GET:
return imxrt_drv_qtmr_get(device, configuration);
default:
return RT_EINVAL;
}
}
static rt_err_t imxrt_drv_qtmr_init(TMR_Type *base, qtmr_channel_selection_t channel, uint16_t psc, uint32_t fre, uint8_t duty)
{
qtmr_config_t qtmr_config;
rt_uint32_t qtmr_clock_freq;
QTMR_GetDefaultConfig(&qtmr_config);
qtmr_config.primarySource = (qtmr_primary_count_source_t)(psc + 8);
qtmr_clock_freq = CLOCK_GetFreq(kCLOCK_IpgClk) / (1 << psc);
QTMR_Init(base, channel, &qtmr_config);
if (kStatus_Success != QTMR_SetupPwm(base, channel, fre, duty, DEFAULT_POLARITY, qtmr_clock_freq))
{
LOG_E(LOG_TAG" setup pwm failed \n");
return RT_ERROR;
}
return RT_EOK;
}
static rt_err_t imxrt_qtmr_init()
{
TMR_Type *base_list[] =
{
#ifdef BSP_USING_QTMR1
TMR1,
#endif
#ifdef BSP_USING_QTMR2
TMR2,
#endif
#ifdef BSP_USING_QTMR3
TMR3,
#endif
#ifdef BSP_USING_QTMR4
TMR4,
#endif
};
rt_uint8_t channel_list[] =
{
#ifdef BSP_USING_QTMR1
#ifdef BSP_USING_QTMR1_CH0
1 << 0 |
#endif
#ifdef BSP_USING_QTMR1_CH1
1 << 1 |
#endif
#ifdef BSP_USING_QTMR1_CH2
1 << 2 |
#endif
#ifdef BSP_USING_QTMR1_CH3
1 << 3 |
#endif
0,
#endif
#ifdef BSP_USING_QTMR2
#ifdef BSP_USING_QTMR2_CH0
1 << 0 |
#endif
#ifdef BSP_USING_QTMR2_CH1
1 << 1 |
#endif
#ifdef BSP_USING_QTMR2_CH2
1 << 2 |
#endif
#ifdef BSP_USING_QTMR2_CH3
1 << 3 |
#endif
0,
#endif
#ifdef BSP_USING_QTMR3
#ifdef BSP_USING_QTMR3_CH0
1 << 0 |
#endif
#ifdef BSP_USING_QTMR3_CH1
1 << 1 |
#endif
#ifdef BSP_USING_QTMR3_CH2
1 << 2 |
#endif
#ifdef BSP_USING_QTMR3_CH3
1 << 3 |
#endif
0,
#endif
#ifdef BSP_USING_QTMR4
#ifdef BSP_USING_QTMR4_CH0
1 << 0 |
#endif
#ifdef BSP_USING_QTMR4_CH1
1 << 1 |
#endif
#ifdef BSP_USING_QTMR4_CH2
1 << 2 |
#endif
#ifdef BSP_USING_QTMR4_CH3
1 << 3 |
#endif
0,
#endif
};
for (rt_uint8_t i = 0; i < sizeof(base_list)/sizeof(TMR_Type *); ++i)
{
for (rt_uint8_t j = 0; j < 8; ++j)
{
if ((channel_list[i] >> j) & 1)
{
if (imxrt_drv_qtmr_init(base_list[i], j, DEFAULT_PRE, DEFAULT_FRE, DEFAULT_DUTY) != RT_EOK)
{
return -RT_ERROR;
}
}
}
}
return RT_EOK;
}
int rt_hw_pwm_init(void)
{
rt_err_t ret = RT_EOK;
@ -391,9 +616,52 @@ int rt_hw_pwm_init(void)
}
#endif /* BSP_USING_PWM4 */
#if defined(BSP_USING_QTMR1) || defined(BSP_USING_QTMR2) || defined(BSP_USING_QTMR3) || defined(BSP_USING_QTMR4)
if (imxrt_qtmr_init() != RT_EOK)
{
LOG_E(LOG_TAG" init qtmr failed");
}
#endif
#ifdef BSP_USING_QTMR1
static struct rt_device_pwm qtmr1_device;
ret = rt_device_pwm_register(&qtmr1_device, "pwm5", &imxrt_drv_qtmr_ops, TMR1);
if (ret != RT_EOK)
{
LOG_E("%s register failed", "pwm5");
}
#endif /* BSP_USING_QTMR1 */
#ifdef BSP_USING_QTMR2
static struct rt_device_pwm qtmr2_device;
ret = rt_device_pwm_register(&qtmr2_device, "pwm6", &imxrt_drv_qtmr_ops, TMR2);
if (ret != RT_EOK)
{
LOG_E("%s register failed", "pwm6");
}
#endif /* BSP_USING_QTMR2 */
#ifdef BSP_USING_QTMR3
static struct rt_device_pwm qtmr3_device;
ret = rt_device_pwm_register(&qtmr3_device, "pwm7", &imxrt_drv_qtmr_ops, TMR3);
if (ret != RT_EOK)
{
LOG_E("%s register failed", "pwm7");
}
#endif /* BSP_USING_QTMR3 */
#ifdef BSP_USING_QTMR4
static struct rt_device_pwm qtmr4_device;
ret = rt_device_pwm_register(&qtmr4_device, "pwm8", &imxrt_drv_qtmr_ops, TMR4);
if (ret != RT_EOK)
{
LOG_E("%s register failed", "pwm8");
}
#endif /* BSP_USING_QTMR4 */
return ret;
}
INIT_DEVICE_EXPORT(rt_hw_pwm_init);
INIT_BOARD_EXPORT(rt_hw_pwm_init);
#endif /* BSP_USING_PWM */