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Fix bk7231 PWM and add cfg option for 600hz pwm

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This commit is contained in:
DSchndr
2022-09-12 00:15:02 +02:00
committed by GitHub
parent f933d36295
commit 103a06fc66
1 changed files with 18 additions and 8 deletions
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26
src/hal/bk7231/hal_pins_bk7231.c
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@@ -1,7 +1,8 @@
#include "../../new_common.h"
#include "../../logging/logging.h"
#include "../../new_cfg.h"
//#include "../../new_pins.h"
#include <gpio_pub.h>
#include "../../beken378/func/include/net_param_pub.h"
@@ -10,6 +11,11 @@
#include "../../beken378/driver/i2c/i2c1.h"
#include "../../beken378/driver/gpio/gpio.h"
//100hz to 20000hz according to tuya code
#define PWM_FREQUENCY_SLOW 600 //Slow frequency for LED Drivers requiring slower PWM Freq
#define PWM_FREQUENCY_DEFAULT 1000 //Default Frequency
int pwmfrequency = PWM_FREQUENCY_DEFAULT;
static int PIN_GetPWMIndexForPinIndex(int pin) {
if(pin == 6)
@@ -76,14 +82,15 @@ void HAL_PIN_PWM_Start(int index) {
if(pwmIndex == -1) {
return;
}
//Use slow pwm if user has set checkbox in webif
if(CFG_HasFlag(11)) pwmfrequency = PWM_FREQUENCY_SLOW; //11 = OBK_FLAG_PWM_SLOW
// they are using 1kHz PWM
// See: https://www.elektroda.pl/rtvforum/topic3798114.html
uint32_t frequency = (26000000 / pwmfrequency);
#if PLATFORM_BK7231N
// OSStatus bk_pwm_initialize(bk_pwm_t pwm, uint32_t frequency, uint32_t duty_cycle);
bk_pwm_initialize(pwmIndex, 1000, 0, 0, 0);
bk_pwm_initialize(pwmIndex, frequency, 0, 0, 0);
#else
bk_pwm_initialize(pwmIndex, 1000, 0);
bk_pwm_initialize(pwmIndex, frequency, 0);
#endif
bk_pwm_start(pwmIndex);
}
@@ -100,10 +107,13 @@ void HAL_PIN_PWM_Update(int index, int value) {
value = 0;
if(value>100)
value = 100;
//uint32_t value_upscaled = value * 10.0f; //Duty cycle 0...100 -> 0...1000
uint32_t period = (26000000 / pwmfrequency); //TODO: Move to global variable and set in init func so it does not have to be recalculated every time...
uint32_t duty = (value / 100.0 * period); //No need to use upscaled variable
#if PLATFORM_BK7231N
bk_pwm_update_param(pwmIndex, 1000, value * 10.0f,0,0); // Duty cycle 0...100 * 10.0 = 0...1000
bk_pwm_update_param(pwmIndex, period, duty,0,0);
#else
bk_pwm_update_param(pwmIndex, 1000, value * 10.0f); // Duty cycle 0...100 * 10.0 = 0...1000
bk_pwm_update_param(pwmIndex, period, duty);
#endif
}