LEDC interrupt for fade --> how it is working?

zilizii
Posts: 12
Joined: Sun Oct 29, 2017 2:19 pm

LEDC interrupt for fade --> how it is working?

Postby zilizii » Sun Oct 29, 2017 4:19 pm

Hello,

I tried to create an interrupt function to check the fade action done.

Code: Select all

ledc_fade_func_install(0);
ledc_isr_register(&ledc_isr_fnc, NULL, ESP_INTR_FLAG_IRAM , NULL);

 while (1) {
            printf("1. LEDC fade up to duty = %d\n", LEDC_TEST_DUTY);
            for (ch = 0; ch < LEDC_TEST_CH_NUM; ch++) {
                ledc_set_fade_with_time(ledc_channel[ch].speed_mode,
                        ledc_channel[ch].channel, LEDC_TEST_DUTY, LEDC_TEST_FADE_TIME);
                ledc_fade_start(ledc_channel[ch].speed_mode,
                        ledc_channel[ch].channel, LEDC_FADE_NO_WAIT);
            }
            vTaskDelay(LEDC_TEST_FADE_TIME / portTICK_PERIOD_MS);
}
where the ledc_isr_fnc looks like only for cheking it is done:

Code: Select all

void IRAM_ATTR ledc_isr_fnc( void * arg) {
	printf("OMG, it is works \n");
}

I got a nice error in the log:

I (730) cpu_start: Starting scheduler on APP CPU.
1. LEDC fade up to duty = 4000
abort() was called at PC 0x40081fb9 on core 0

Backtrace: 0x40085fd8:0x3ffb0500 0x400860d7:0x3ffb0520 0x40081fb9:0x3ffb0540 0x400820d9:0x3ffb0570 0x400d215e:0x3ffb0590 0x400d21b9:0x3ffb05d0 0x40081e06:0x3ffb05f0 0x40081922:0x3ffb0610

Rebooting...
ets Jun 8 2016 00:22:57


I hope somebody is able to help to me to debug where I amde the mistake. I tried many ways, I think I do not understand the basic concept, I am in the beggining of the learning curve...

Thank you very much in advance!
Trial - Error scenario for learning ESP32 :D

zilizii
Posts: 12
Joined: Sun Oct 29, 2017 2:19 pm

Re: LEDC interrupt for fade --> how it is working?

Postby zilizii » Mon Oct 30, 2017 7:51 pm

Hello,

I made some modification in the main:

Code: Select all

ledc_fade_func_install(ESP_INTR_FLAG_IRAM);
ledc_isr_register(&ledc_isr_fnc, NULL, ESP_INTR_FLAG_IRAM, NULL);
in the ISR:

Code: Select all

void IRAM_ATTR ledc_isr_fnc(void * arg) {

	 uint32_t l_ulCounter = counter++;
	 BaseType_t xHigherPriorityTaskWoken;
	 xQueueSendFromISR(queue, &l_ulCounter, &xHigherPriorityTaskWoken);
	 if( xHigherPriorityTaskWoken )
	     {
	         /* Actual macro used here is port specific. */
		 	 portYIELD_FROM_ISR();
	     }
}
and I got the following, I do not understand why not got 1 interrupt the end of the fade...

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
ets Jun 8 2016 00:22:57

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0010,len:4
load:0x3fff0014,len:5424
ho 0 tail 12 room 4
load:0x40078000,len:0
load:0x40078000,len:12028
entry 0x40078f24
I (48) boot: ESP-IDF v3.0-dev-349-g2861f3e8-dirty 2nd stage bootloader
I (48) boot: compile time 20:40:10
I (51) boot: Enabling RNG early entropy source...
I (68) boot: SPI Speed : 40MHz
I (81) boot: SPI Mode : DIO
I (93) boot: SPI Flash Size : 4MB
I (105) boot: Partition Table:
I (117) boot: ## Label Usage Type ST Offset Length
I (139) boot: 0 nvs WiFi data 01 02 00009000 00006000
I (163) boot: 1 phy_init RF data 01 01 0000f000 00001000
I (186) boot: 2 factory factory app 00 00 00010000 00100000
I (209) boot: End of partition table
I (222) esp_image: segment 0: paddr=0x00010020 vaddr=0x3f400020 size=0x05358 ( 21336) map
I (273) esp_image: segment 1: paddr=0x00015380 vaddr=0x3ffb0000 size=0x01eb4 ( 7860) load
I (287) esp_image: segment 2: paddr=0x0001723c vaddr=0x40080000 size=0x00400 ( 1024) load
I (306) esp_image: segment 3: paddr=0x00017644 vaddr=0x40080400 size=0x07458 ( 29784) load
I (370) esp_image: segment 4: paddr=0x0001eaa4 vaddr=0x400c0000 size=0x00000 ( 0) load
I (371) esp_image: segment 5: paddr=0x0001eaac vaddr=0x00000000 size=0x01564 ( 5476)
I (399) esp_image: segment 6: paddr=0x00020018 vaddr=0x400d0018 size=0x0fd3c ( 64828) map
I (504) boot: Loaded app from partition at offset 0x10000
I (504) boot: Disabling RNG early entropy source...
I (505) cpu_start: Pro cpu up.
I (516) cpu_start: Starting app cpu, entry point is 0x40080d18
I (0) cpu_start: App cpu up.
I (549) heap_init: Initializing. RAM available for dynamic allocation:
I (570) heap_init: At 3FFAE2A0 len 00001D60 (7 KiB): DRAM
I (588) heap_init: At 3FFB26C8 len 0002D938 (182 KiB): DRAM
I (608) heap_init: At 3FFE0440 len 00003BC0 (14 KiB): D/IRAM
I (627) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM
I (647) heap_init: At 40087858 len 000187A8 (97 KiB): IRAM
I (666) cpu_start: Pro cpu start user code
I (724) cpu_start: Starting scheduler on PRO CPU.
I (190) cpu_start: Starting scheduler on APP CPU.
queue end
task created
Print Task startedledc config ok
1. LEDC fade up to duty = 4000
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8913ets Jun 8 2016 00:22:57

rst:0x8 (TG1WDT_SYS_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
ets Jun 8 2016 00:22:57

rst:0x7 (TG0WDT_SYS_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
Trial - Error scenario for learning ESP32 :D

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