I simply connected the TX pin to the RX pin.(So there's no Can Transreceiver.) When I look through the oscilloscope, I can see the continuous data flow.That's why I think the TX pin works. Code is as below. TaskHandle_t _xHandleTransmit; void canbusTransmitTask(void *pvParam) { can_message_t message...

When I changed the function from
static void timer_group0_isr(void* arg)
to
static void IRAM_ATTR timer_group0_isr(void* arg)

my problem solved. Thank you to everyone who help.

chegewara wrote: ↑

Tue Nov 12, 2019 7:44 am

Did you check timer's value after start?
Did you check that all commands return ESP_OK?

I'm guessing timer is setup to very long time and did not trigger yet.

timer_isr_register function returns "ESP_ERR_INVALID_ARG"

martinayotte wrote: ↑

Mon Nov 11, 2019 3:11 pm

eowesi wrote: ↑

Mon Nov 11, 2019 12:09 pm

The display shows "c : 0" continuously.

You need to have your declaration "uint32_t c = 0;" to be volatile, ie "volatile uint32_t c = 0;"

not working

At the beginning you can't use standard logging from isr function, when timer will trigger it it will crash, but you can use ets_printf. Here is very good example how to start: https://github.com/espressif/esp-idf/blob/master/components/driver/test/test_timer.c I changed my isr to : uint32_t c = 0;...

I am trying to run timer interrupt with below code. But I can't see the print (printf("timer_group0_isr OK!\n")) I must to see. static void timer_group0_isr(void* arg) { printf("timer_group0_isr OK!\n"); TIMERG0.int_clr_timers.t0 = 1; TIMERG0.hw_timer[0].config.alarm_en = 1; } void timer_tg0_initial...

My first question is: Does all digital pins support open drain? Second is: I'm trying to set the fourth pin as open drain.The arduino code below didn't work. Where am I making a mistake?(Is code OK?) void setup() { REG_WRITE(GPIO_PIN4_REG, GPIO_PIN4_PAD_DRIVER); } void loop() { REG_WRITE(GPIO_OUT_W1...

Your answer solved my problem.But When I write print into the task, gives me same error. Full Code: mbedtls_aes_context aes; size_t _length = 16; unsigned char iv[16] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}; unsigned char key[16] = {0xff, 0x...

Can you supply simple aes cbc code example?

This is my code but it crashes: mbedtls_aes_context aes; size_t _length = 16; unsigned char iv[16] = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}; unsigned char key[16] = {0xff, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c...