I'm writing an application to monitor a stepper motor and it's steps. I read the steps in and check the motor has moved. Cycle times can be as little as 400us depending on speed but in general 600us ( I tend to run the machine slower rather than faster) From guidance given to-date I can successfully...

Can anyone please help me with example code for a software generated interrupt. I suspect it will require registration of an interrupt handler, and an handler, perhaps something in the order of below. I have a number of tasks running on both cores and want to be able to 'check and compare' when the ...

Hi Deouss, are you able to offer any example code for your suggestion?
I've gone round in circles for a few times with this but 'nothing has clicked' - I'm sure I'm not seeing the wood for the trees

thanks in advance Paul

My code #define sVersion 1.01 /** * Brief: * This test code is used to monitor steps received (destined for a step motor) and checks an encoder for movement. * * GPIO status: * GPIO16: output * GPIO17: output * GPIO18: output * GPIO19: output * GPIO4: input, RMT, steps in * GPIO5: input, PCNT, encod...

Hi, ESP_Angus many thanks for your reply. I’ve switched to RMT for input step capture and brought forward some of the various functions. My issue with the receive ISR handler function timing out after 5 seconds was due to xRingbufferReceive() not blocking correctly, once I changed to xRingbufferRece...

Well I've sorted how to do this. PCNT works well to capture the encoder inputs and RMT (receive) is almost there. RMT (receive) will count the input pulses without loss, but, when there has been a period of inactivity for between 5/6 seconds it becomes inactive. I can only getting working again by r...

I'm using the RMT module to count input pulses, it works well except when there is a break between pulses of more than 6 seconds. In other words, I'm counting pulses that are sent to a stepper driver, so they are received as and when generated. When RMT receives an input pulse it's counted and gener...

These are the basic code elements I tried but without any success /* RMT receiver */ #define RMT_RX_ACTIVE_LEVEL 1 // Data bit is active high #define RMT_RX_CHANNEL 0 // RMT channel for receiver #define RMT_RX_GPIO_NUM GPIO_NUM_4 // GPIO number for receiver #define RMT_CLK_DIV 100 // RMT counter clo...

Hi, Can anyone please point me to / or offer and example of how to associate an ISR handler to the RMT receive element. I'm looking for when the RMT receiver has finished receiving a signal to be able to do.... when the interrupt fires. Triggered on RMT_CHn_RX_END_INT: Triggered when the receiver ha...

Thanks Deouss, clarkster for the heads up. PCNT works really well for capturing my encoder inputs as do RMT for the step pulses - no stuttering / latency issues. But, I need to know when a step pulses arrives which direction the stepper motor is moving in, in other words, on a step input I need to k...