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It's at 8 seconds, and the callback disables some output pins. I suppose the callback function also crashes since everything is being overwritten.

I experimented with large const arrays but that was all working fine... Then I realized that the large programs also have the watchdog timer (WDT1) active. I disabled that and it seems to complete fine now. So now I modified the flash_move function to take a function pointer that is called...

I rely on the CAN protocol for the message integrity. CAN has a built-in CRC check and will automatically ask for a repeat message if needed. On top of that, I keep track of each message as the Teensy first replies to every message with the next address location. The host can then verify that...

Because without disabling it, the result was always the same: Teensy freezes and is not recognized by TeensyLoader until after some "cool-down" time. I tried it in 2 different large programs and got the same result. By commenting it, I did manage to flash several times in a row, hence I...

After some initial success, I get also unreliable behavior after commenting out the buffer erase part. Teensy hangs and on power cycle blinks 9 times on the red LED.

I did that, but then I get the behaviour in my first post (freezes at address). I meant that I later commented out the part where the source buffer is erased (below "//move is complete"). Then the Teensy reboots into the new program fine every time, but the orange LED stayed on half-lit until...

To be fair, I never checked if it actually clocks to below 24Mhz. But now I need to know :P I also commented out the part that erases the buffer in FlashTxx.c and on first test with the blinker sketch that worked. I'll report back tomorrow.

Yes, would that make a difference? I haven't tried it at the default 600Mhz, will do. I'm using the EEPROM, but increased FLASH_RESERVE to (64*FLASH_SECTOR_SIZE), as I read that it then stays out of the top 256K used by the EEPROM emulation. I'll try your suggestion with full reset/upload/flasher.

I didn't notice it getting any hotter, but I configured it to run at 16Mhz with set_arm_clock() The blinker test is 23552 bytes (upload) and the summary after compilation is teensy_size: Memory Usage on Teensy 4.1: teensy_size: FLASH: code:10532, data:4040, headers:8976 free for...

I am integrating the FlasherX code into my own project to be able to flash over CANbus. For a small blinker application, this works reliably, but in my final application weird things start to happen. As test, I try to flash the blinker firmware when the larger application is running. After the...

I got it to work. It had to be something very stupid... The display is supposed to be 3.3/5V tolerant and I feed it 5V. When connecting Vcc to 3.3V, it came to life immediately. In the past I used a similar Waveshare ILI9341 panel at 5V since the backlight LEDs were then a bit brighter. It...

You're right, I uncommented both messages to see what parts are executed. I found an arduino library that should apply to this display at https://github.com/limengdu/XIAO_ST7789V3_LCD_Display/tree/main However, after fiddling with the included helloworld example, the display stays black. I...

This particular display is 172x320, so I used tft.init(172, 320); But to be sure, I also tested with 240,320. #define TFT_MISO 12 #define TFT_MOSI 11 //a12 #define TFT_SCK 13 //a13 #define TFT_DC 9 #define TFT_CS 10 #define TFT_RST 8 ST7789_t3 tft = ST7789_t3(TFT_CS, TFT_DC...

Hi, I am trying to get a Waveshare 1.47" LCD module to work using PaulStoffregen's ST7789_t3 library. (https://www.waveshare.com/1.47inch-lcd-module.htm) Unfortunately, the screen stays black, no matter what I tried (SPI0, SPI1, software-SPI). I'm starting to think the ST7789V3 is more recent...

Thank you luni, I appreciate it very much! I have now started again from your code, and slowly added feature by feature and so far it is still working as it should. I noticed also that I was not servicing the FlexCAN_T4 events() fast enough and dropping CAN messages. I now put an intervaltimer...

Thanks! The frozen time appears as soon as I start the teensy and start transmitting CAN messages from my laptop to it. I tried also reinserting the RTC battery to make sure, but no change. I let it run for a while and recorded each time the printed time would update: 23:55:59 23:58:17 00:00:34...

Late reply, the car in which this was put was not nearby so I had to wait for it to return to base to continue :) Still breaking my head on this. I implemented your chrono-based method (which looks super clean btw), but I get timestamps that kind of "freeze". I'll try to illustrate this. In the...

Thanks Luni, that is definately useful for me! At the moment I am seeing that the value from seconds() in the log file is stepping back and forth. E.g. 13:09:37, 13:09:37, 13:09:38 ... , 13:09:37, ... 13:09:38, ... 13:09:39 and so on. I added an example in attachment The data itself from the...

For a CAN logger project, I am trying to get a reliable timestamp from the RTC with millisecond precision. I have found several topics on this and worked out some code from that, but I get erratic behaviour in the resulting log files. Sometimes, seconds jump back and forth and the log is...

Wow, I found this topic after days of struggling to isolate the semi-random lockups of my T4.1 dashboard. But sometimes they lasted >2mins, sometimes 4 secs. During a lockup, all interrupts were 'frozen', but CAN msgs kept being ACKd. After the change in startup.c, my tests ran the whole night...

I am trying to understand the flash writing code I found in the EEPROM emulation (https://github.com/PaulStoffregen/cores/blob/master/teensy4/eeprom.c) and the flasher4 OTA code. A lot is going on to set up the sequence LUT and IP command control registers, some of which I find very little...

Thanks, it works now :o

Thanks to clarify. I think it could still be useful for my purpose. With those parameters and the online test it looks to correspond with the CRC32 MPEG-2 variant. I am wondering though, if I double the message length to 64 in the example to e.g. static const uint8_t message[] =...

I was looking into using the DCP to efficiently calculate CRC32 checksums. However, I can't really find documentation on how to configure and use this peripheral. The "i.MX RT1060 Processor Reference Manual" has a single paragraph on it in section 7.5, p.182, and in the teensyduino headers there...

Okay, I peeked in Wire.cpp and see what you mean. I'm a bit surprised why it would need interrupts at all, since the Wire read/write methods are supposed to be blocking anyway? I'll solve it with a global flag and read it in the main loop, as you suggested. Thanks for the help!

I'm trying to read data from a ST L3G4200D gyro, which is connected via 2-wire I2C to a Teensy2, on pins D0 and D1. I'm using the L3G library from https://github.com/pololu/l3g-arduino for convenience. Everything works fine as long as the call to the library's gyro.read() function is in the...

The PSU also feeds 144 WS2812B LEDs and an USB Host Shield with Xbox controller attached, so there is definately some idle load. I suppose looking at it on a scope would be best, but I don't have one nearby so that will have to wait :)

That is possible, but the POR circuit is supposed to keep the uC in reset until a high enough voltage V_lvdl of 1.6V is reached? The minimum supply voltage of the MK20DX128 is 1.71V according to the datasheet. That seems a little illogical... Anyway, can the 3.3V converter on the board be...

Yes, I got the power supply from here: http://www.ledsee.com/index.php/power-supply-s-adapters/150w-power-supply-5v-detail I can try to find a manufacturer name when I'm back home.

I'm using a Teensy 3 in combination with a 150W 5V switching PSU. When I power the Teensy from this 5V source, it doesn't do anything when switching on the PSU. It does work however when I first start up the PSU and then connect the Teensy's power. Does the Teensy have an internal Power-On...