hi guys,
my wsock test with
highspeed pwm on RGB on wRover Kit V2
debug prints on uart console
duty set by wifi browser/wsock.
if you want you can see here a short animation sequence
- high_speed_pwm_wRover_RGB_wsock.jpg (133.4 KiB) Viewed 20053 times
Abridged versions
Code: Select all
/* highspeed pwm test */
/* duty VARs for set duty later example by uart or wifi or other */
uint32_t dutyCycleR=0, dutyCycleG=0, dutyCycleB=0;
// highspeed
void pwm_highspeed_setup()
{
/* Enable LED PWM peripheral */
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_LEDC_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_LEDC_RST);
/* set high timer*/
WRITE_PERI_REG (LEDC_HSTIMER0_CONF_REG, (1<<25)|(0b000000001000000000<<5)|10);
/* set high speed channel 2 */
WRITE_PERI_REG (LEDC_HSCH2_CONF0_REG, (1<<3)|(1<<2));
WRITE_PERI_REG (LEDC_HSCH2_HPOINT_REG, 0 );
WRITE_PERI_REG (LEDC_HSCH2_DUTY_REG, 0);
WRITE_PERI_REG (LEDC_HSCH2_CONF1_REG, (1<<31));
/* set high speed channel 3 */
WRITE_PERI_REG (LEDC_HSCH3_CONF0_REG, (1<<3)|(1<<2));
WRITE_PERI_REG (LEDC_HSCH3_HPOINT_REG, 0 );
WRITE_PERI_REG (LEDC_HSCH3_DUTY_REG, 0);
WRITE_PERI_REG (LEDC_HSCH3_CONF1_REG, (1<<31));
/* set high speed channel 4 */
WRITE_PERI_REG (LEDC_HSCH4_CONF0_REG, (1<<3)|(1<<2));
WRITE_PERI_REG (LEDC_HSCH4_HPOINT_REG, 0 );
WRITE_PERI_REG (LEDC_HSCH4_DUTY_REG, 0);
WRITE_PERI_REG (LEDC_HSCH4_CONF1_REG, (1<<31));
// R= 0 G= 2 B= 4
/* set gpio out enable */
WRITE_PERI_REG (GPIO_ENABLE_REG, (1<<0)|(1<<2)|(1<<4));
/* set LEDC_HS_SIG_OUT to the Green, Blue, Red gpio */
// info: LEDC_HS_SIG_OUT0_IDX is 71
// https://github.com/espressif/esp-idf/blob/master/components/esp32/include/soc/gpio_sig_map.h#L154
// setting is SIG_OUT + HighSpeedChannel here in the test 2, 3, and 4
WRITE_PERI_REG (GPIO_FUNC2_OUT_SEL_CFG_REG, (1<<10)|73); // G 71 + cn 2
WRITE_PERI_REG (GPIO_FUNC4_OUT_SEL_CFG_REG, (1<<10)|74); // B 71 + cn 3
WRITE_PERI_REG (GPIO_FUNC0_OUT_SEL_CFG_REG, (1<<10)|75); // R 71 + cn 4
/* GPIO MUX */
WRITE_PERI_REG (PERIPHS_IO_MUX_GPIO2_U, (3<<10)|(1<<8));
WRITE_PERI_REG (PERIPHS_IO_MUX_GPIO4_U, (3<<10)|(1<<8));
WRITE_PERI_REG (PERIPHS_IO_MUX_GPIO0_U, (3<<10)|(1<<8));
}
// highspeed
void pwm_highspeed_update()
{
/*chn-2 update duty green led */
WRITE_PERI_REG (LEDC_HSCH2_DUTY_REG, (dutyCycleG * DUTY_CYCLE_MAX / 100) << 4);
WRITE_PERI_REG (LEDC_HSCH2_CONF1_REG, (1<<31));
/*chn-3 update blue led */
WRITE_PERI_REG (LEDC_HSCH3_DUTY_REG, (dutyCycleB * DUTY_CYCLE_MAX / 100) << 4);
WRITE_PERI_REG (LEDC_HSCH3_CONF1_REG, (1<<31));
/*chn-4 update red led */
WRITE_PERI_REG (LEDC_HSCH4_DUTY_REG, (dutyCycleR * DUTY_CYCLE_MAX / 100) << 4);
WRITE_PERI_REG (LEDC_HSCH4_CONF1_REG, (1<<31));
}
void pwm_high_init(void)
{
/* setup PWM */
pwm_highspeed_setup();
/* set duty vars to all 50 "prozent" */
dutyCycleR=50;
dutyCycleG=50;
dutyCycleB=50;
/* update duty */
pwm_highspeed_update();
}
works.
if i test in an other project the low speed pwm
same procedure, only change H to L
my
lowspeed pwm on RGB on wRover Kit V2
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/* duty VARs for set duty later example by uart or wifi or other */
uint32_t dutyCycleR=0, dutyCycleG=0, dutyCycleB=0;
// lowspeed
void pwm_lowspeed_setup()
{
/* Enable LED PWM peripheral */
SET_PERI_REG_MASK(DPORT_PERIP_CLK_EN_REG, DPORT_LEDC_CLK_EN);
CLEAR_PERI_REG_MASK(DPORT_PERIP_RST_EN_REG, DPORT_LEDC_RST);
/* set low timer*/
WRITE_PERI_REG (LEDC_LSTIMER0_CONF_REG, (1<<25)|(0b000000001000000000<<5)|10);
/* set low speed channel 2 */
WRITE_PERI_REG (LEDC_LSCH2_CONF0_REG, (1<<3)|(1<<2));
WRITE_PERI_REG (LEDC_LSCH2_HPOINT_REG, 0 );
WRITE_PERI_REG (LEDC_LSCH2_DUTY_REG, 0);
WRITE_PERI_REG (LEDC_LSCH2_CONF1_REG, (1<<31));
/* set low speed channel 3 */
WRITE_PERI_REG (LEDC_LSCH3_CONF0_REG, (1<<3)|(1<<2));
WRITE_PERI_REG (LEDC_LSCH3_HPOINT_REG, 0 );
WRITE_PERI_REG (LEDC_LSCH3_DUTY_REG, 0);
WRITE_PERI_REG (LEDC_LSCH3_CONF1_REG, (1<<31));
/* set low speed channel 4 */
WRITE_PERI_REG (LEDC_LSCH4_CONF0_REG, (1<<3)|(1<<2));
WRITE_PERI_REG (LEDC_LSCH4_HPOINT_REG, 0 );
WRITE_PERI_REG (LEDC_LSCH4_DUTY_REG, 0);
WRITE_PERI_REG (LEDC_LSCH4_CONF1_REG, (1<<31));
// R= 0 G= 2 B= 4
/* set gpio out enable */
WRITE_PERI_REG (GPIO_ENABLE_REG, (1<<0)|(1<<2)|(1<<4));
/* set LEDC_LS_SIG_OUT to the Green, Blue, Red gpio */
// info: LEDC_LS_SIG_OUT0_IDX is 79
// https://github.com/espressif/esp-idf/blob/master/components/esp32/include/soc/gpio_sig_map.h#L170
// setting is SIG_OUT + LowSpeedChannel here in the test 2, 3, and 4
WRITE_PERI_REG (GPIO_FUNC2_OUT_SEL_CFG_REG, (1<<10)|81); // G 79 + cn 2
WRITE_PERI_REG (GPIO_FUNC4_OUT_SEL_CFG_REG, (1<<10)|82); // B 79 + cn 3
WRITE_PERI_REG (GPIO_FUNC0_OUT_SEL_CFG_REG, (1<<10)|83); // R 79 + cn 4
/* GPIO MUX */
WRITE_PERI_REG (PERIPHS_IO_MUX_GPIO2_U, (3<<10)|(1<<8));
WRITE_PERI_REG (PERIPHS_IO_MUX_GPIO4_U, (3<<10)|(1<<8));
WRITE_PERI_REG (PERIPHS_IO_MUX_GPIO0_U, (3<<10)|(1<<8));
}
// lowspeed
void pwm_lowspeed_update()
{
/*chn-2 update duty green led */
WRITE_PERI_REG (LEDC_LSCH2_DUTY_REG, (dutyCycleG * DUTY_CYCLE_MAX / 100) << 4);
WRITE_PERI_REG (LEDC_LSCH2_CONF1_REG, (1<<31));
/*chn-3 update blue led */
WRITE_PERI_REG (LEDC_LSCH3_DUTY_REG, (dutyCycleB * DUTY_CYCLE_MAX / 100) << 4);
WRITE_PERI_REG (LEDC_LSCH3_CONF1_REG, (1<<31));
/*chn-4 update red led */
WRITE_PERI_REG (LEDC_LSCH4_DUTY_REG, (dutyCycleR * DUTY_CYCLE_MAX / 100) << 4);
WRITE_PERI_REG (LEDC_LSCH4_CONF1_REG, (1<<31));
}
void pwm_low_init(void)
{
/* setup PWM */
pwm_lowspeed_setup();
/* set duty to all 50 "prozent" */
dutyCycleR=50;
dutyCycleG=50;
dutyCycleB=50;
/* update duty */
pwm_lowspeed_update();
}
works not.
i am not sure in the LOW Speed setup, think there is one or two code lines missing,
do we need to set low clk too then ?
where is my thinking wrong?
best wishes
rudi
btw:
you find a runing websocket server from Thomas
here
tried after high speed register code then an high speed api code and it works,
Code: Select all
/* includes */
#include "driver/ledc.h"
#include "esp_err.h"
/* channels */
#define LED_R_PWM_CHANNEL LEDC_CHANNEL_1
#define LED_G_PWM_CHANNEL LEDC_CHANNEL_2
#define LED_B_PWM_CHANNEL LEDC_CHANNEL_3
/* timer */
#define LED_PWM_TIMER LEDC_TIMER_1
// #define LED_PWM_BIT_NUM LEDC_TIMER_10_BIT // 1024 ( 1023 )
#define LED_PWM_BIT_NUM LEDC_TIMER_8_BIT // 256 ( 255 )
/* used GPIO */
/* wRover Kit 2*/
#define LED_BLUE GPIO_NUM_4
#define LED_RED GPIO_NUM_0
#define LED_GREEN GPIO_NUM_2
void led_pwm_init(void)
{
ledc_channel_config_t ledc_channel_r = {0}, ledc_channel_g = {0}, ledc_channel_b = {0} ;
/* set channel r */
ledc_channel_r.gpio_num = LED_RED;
ledc_channel_r.speed_mode = LEDC_HIGH_SPEED_MODE;
ledc_channel_r.channel = LED_R_PWM_CHANNEL;
ledc_channel_r.intr_type = LEDC_INTR_DISABLE;
ledc_channel_r.timer_sel = LED_PWM_TIMER;
ledc_channel_r.duty = 0;
/* set channel g */
ledc_channel_g.gpio_num = LED_GREEN;
ledc_channel_g.speed_mode = LEDC_HIGH_SPEED_MODE;
ledc_channel_g.channel = LED_G_PWM_CHANNEL;
ledc_channel_g.intr_type = LEDC_INTR_DISABLE;
ledc_channel_g.timer_sel = LED_PWM_TIMER;
ledc_channel_g.duty = 0;
/* set channel b */
ledc_channel_b.gpio_num = LED_BLUE;
ledc_channel_b.speed_mode = LEDC_HIGH_SPEED_MODE;
ledc_channel_b.channel = LED_B_PWM_CHANNEL;
ledc_channel_b.intr_type = LEDC_INTR_DISABLE;
ledc_channel_b.timer_sel = LED_PWM_TIMER;
ledc_channel_b.duty = 0;
/* set timer */
ledc_timer_config_t ledc_timer = {0};
ledc_timer.speed_mode = LEDC_HIGH_SPEED_MODE;
ledc_timer.bit_num = LED_PWM_BIT_NUM;
ledc_timer.timer_num = LED_PWM_TIMER;
ledc_timer.freq_hz = 25000;
ESP_ERROR_CHECK( ledc_channel_config(&ledc_channel_r) );
ESP_ERROR_CHECK( ledc_channel_config(&ledc_channel_g) );
ESP_ERROR_CHECK( ledc_channel_config(&ledc_channel_b) );
ESP_ERROR_CHECK( ledc_timer_config(&ledc_timer) );
}
void led_pwm_set(uint32_t led_r_duty, uint32_t led_g_duty, uint32_t led_b_duty ) {
/* LED R */
ESP_ERROR_CHECK( ledc_set_duty(LEDC_HIGH_SPEED_MODE, LED_R_PWM_CHANNEL, led_r_duty) );
ESP_ERROR_CHECK( ledc_update_duty(LEDC_HIGH_SPEED_MODE, LED_R_PWM_CHANNEL) );
/* LED G */
ESP_ERROR_CHECK( ledc_set_duty(LEDC_HIGH_SPEED_MODE, LED_G_PWM_CHANNEL, led_g_duty) );
ESP_ERROR_CHECK( ledc_update_duty(LEDC_HIGH_SPEED_MODE, LED_G_PWM_CHANNEL) );
/* LED B */
ESP_ERROR_CHECK( ledc_set_duty(LEDC_HIGH_SPEED_MODE, LED_B_PWM_CHANNEL, led_b_duty) );
ESP_ERROR_CHECK( ledc_update_duty(LEDC_HIGH_SPEED_MODE, LED_B_PWM_CHANNEL) );
}
void pwm_init(void) {
/* init PWM */
printf("\nRGB 255 PWM setup by API\n");
led_pwm_init();
/* set R= 155 G= 208 B= 223 */
/* call it in your cb if you need new value on the RGB */
printf("\nset duty\nR=155\nG=208\nB=223\n");
led_pwm_set(155, 208, 223 );
}
a try to change the highspeed api to lowspeed api does not work too.