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middle_hook seems to be used (error message when trying to use it). early_hook (only using registers in Flashmem) did not work reliable at least at short times. Deactivating WDT3 in Callback works great.

ChatGPT told me after some discussion to wait before writing to the registers. So I added in the Callback: WDOG3_CNT = 0xD928C520; // Unlock while (!(WDOG3_CS & WDOG_CS_ULK)) { // Warten bis entsperrt } WDOG3_CS &= ~WDOG_CS_EN; WDOG3_TOVAL = 0xFFFF; WDG3 can run well below 1 ms...

I need a watchdog with a very short timeout of only a few milliseconds. Therefore, I'm using WDOG3, since it supports an appropriately low timeout (the comment in the example appears to be incorrect—the timeout values are actually given in milliseconds). Because the watchdog remains enabled...

Thanks for the code. Use the I2C-scanner to find out the address. Mine was 0x60. Wire.h allows to change the I2C speed, which did not work with the drivers from the example.

To answer my own question: Yes, teensy4_i2c works and can perform async transfers. The following code reads data from an AS5600 every 75 µs, which is twice the internal rate and is not blocking for the time of transfer. A check if new data is available could be done by if...

I found this topic from 2021 and there were no suggestions. I found old discussions to the topic, too, but nothing new and it doesn't seem to be implemented in Teensduino yet. A simple RequestFrom with only two bytes at 1 MHz takes about 25 µs, which is long on a 600 MHz processor. Is it so...

Adding all available Pullup resistors to Teensduino As I needed other values as pullup resistors, I added in core_pins.h: (directory: ...\AppData\Local\Arduino15\packages\teensy\hardware\avr\1.58.1\cores\teensy4) #define INPUT_PULLUP47k 6 #define INPUT_PULLUP100k 7 and in digital.c at...

I want to use the QuadEncoder + Interrupts on PinA and PinB. It seems that switsching the Pins (2 and 3) with the XBAR to the encoder disabled the interrupts and vice versa, attaching interrupts to the Pins, disables the QuadEncoder. The later blocks the former. Any idea to habe Filtering of...

Thanks for the great information. I am looking for one more feature: SPI on the Teensy has SPI.transfer with the eventResponder and SPI.transfer32 (without event). Is there a simple way to combine 32 Bit transfer and enabling the event_Responder? Best regards

Thanks for this hint. Works nice! :) CCM_CCGR2 |= CCM_CCGR2_XBAR1(CCM_CCGR_ON); //turn clock on for xbara1 //CCM_CCGR3 |= CCM_CCGR3_AOI1(CCM_CCGR_ON); xbar_connect( XBARA1_IN_AOI1_OUT0, XBARA1_IN_IOMUX_XBAR_INOUT06); //This connects XBAR1_AOI1 to XBAR1_OUT6...

Actually, one pin as input and output would work, but this is not what I want to do. My problem is that I want to use one signal (not actually at a PIN, but somewhere inside the processor) for several outputs. I hoped to use LOGIC_LOW, LOGIC_HIGH for one input of XBAR and use the output of this...

Hi, in order to synchronize resets I wanted to use one XBAR_InOut for several signals and put the state with LOGIC_LOW, LOGIC_HIGH for one XBAR_InOut, which is than routed to all the other signals. But it seems that I have to choose if I use any InOut as input or output, but not both at the...

-> KurtE This is realy great stuff! Thanks for the post Edmund

As the ISP program compiled without errors on a different computer, I made a complete new installation and it works.

I try to use SPI on Teensy 4.0. I installed the library SPI-master from github, but I get error messages when compiling: C:\Users\Koch\AppData\Local\Temp\arduino_build_47759\sketch\SPI_Test.ino.cpp.o: In function `setup': C:\Users\Koch\Documents\Arduino\Teensy\SPI_Test/SPI_Test.ino:31...

Thanks Paul, FLEXPWM2_SM0STS |= FLEXPWM_SMSTS_RF; // Clear Reload was missing in the IE-Routine. Clearing is done by writing a 1 to the bit, a little strange but explained on page 3100 in the Processor Reference Manual.

I wanted to trigger an interrupt each time the PWM is reloaded. Therefore, I added the interrupt routine void TIMER() { ie++; asm("dsb"); } and the following lines at the end of setup: attachInterruptVector(IRQ_FLEXPWM2_0, TIMER); NVIC_ENABLE_IRQ(IRQ_FLEXPWM2_0); FLEXPWM2_SM0INTEN...

Wonderful job. That saved me probably days of looking at the different registers. Routing the trigger and setting up the trigger to the ADC needs some steps, but allows many, many options. Some small corrections: The output for the PWM-signal is not configured. The PWM ratio is 100%, so no...