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by mrburnette
Sat Feb 25, 2017 3:56 pm
Forum: General discussion
Topic: Planning to add callback to the SPI DMA functions (dmaSend, dmaTransfer...)
Replies: 36
Views: 279

Re: Planning to add callback to the SPI DMA functions (dmaSend, dmaTransfer...)

.... thinking out loud.... no response expected ....

Anyone looked into what Paul Stoffregen is doing around Teensy 3.1/3.2 ?
by mrburnette
Sat Feb 25, 2017 3:42 pm
Forum: Projects
Topic: $10 O-Scope revisited
Replies: 593
Views: 31339

Re: $10 O-Scope revisited

the noise, yes, by small signals. but I think a Scope is more for the signal form etc, not for the accuracy ( if the amplitude is 2.5V or 2.516 V) . Yes, in the "old days", scopes were analog and had a 1V p-p internal reference so the user could calibrate/verify the probe and front-end wi...
by mrburnette
Sat Feb 25, 2017 3:25 pm
Forum: STLink
Topic: ST-LINK V2-1 does not work with Windows 10
Replies: 9
Views: 129

Re: ST-LINK V2-1 does not work with Windows 10

Thanks. <...> I use 4 computers, all Win 10 64 bit, and the same development softwares. Newest Stlink driver and newest firmware. Same Avast antivirus on all. First one: Stlink V2-1 is never usable. Shows up in device manager, but none of the softwares can use it. Stlink V2 work fine. Second and th...
by mrburnette
Sun Feb 19, 2017 4:31 pm
Forum: General discussion
Topic: Intercept the usart isr without resorting to hacking the core
Replies: 16
Views: 191

Re: Intercept the usart isr without resorting to hacking the core

Now with the weakref also added I can begin all 3 usarts and only have usart interrupt code for usart2 and the MCU keeps running. Also a normal sketch without any usart interrupt code works fine. I was active here in the BobC days andvBobC and I had a number of off-line conversations about C++ and ...
by mrburnette
Fri Feb 17, 2017 4:41 pm
Forum: Off topic
Topic: ESP32
Replies: 2
Views: 108

ESP32

I needed some items quicker than the China boat could get here, so I ordered from Adafruit and was willing to pay the UPS delivery standard rate. Before I hit ENTER for my order, I went around doing some window-shopping to lessen the sting of the too-high shipping costs; I found the ESP32 dev board....
by mrburnette
Thu Feb 16, 2017 2:38 pm
Forum: General discussion
Topic: [SOLVED] HardwareSerial available() not reporting length of buffered data on Serial1
Replies: 32
Views: 247

Re: HardwareSerial available() not reporting length of buffered data on Serial1

Would you please replace Serial with Serial1 and attach a USB-USART bridge on PA9, PA10 ? (at least I/we can confirm it is my hardware at fault or not) Surely: I went ahead and downloaded the most current "master" from github, installed, reflashed, rerun the serial .... works OK void setu...
by mrburnette
Thu Feb 16, 2017 2:37 pm
Forum: General discussion
Topic: [SOLVED] HardwareSerial available() not reporting length of buffered data on Serial1
Replies: 32
Views: 247

Re: HardwareSerial available() not reporting length of buffered data on Serial1

Would you please replace Serial with Serial1 and attach a USB-USART bridge on PA9, PA10 ? (at least I/we can confirm it is my hardware at fault or not) Surely: void setup() { Serial1.begin(115200); } void loop() { while (1) { delay(200); Serial1.println(Serial1.available()); } } Output: 0 0 0 0 0 0...
by mrburnette
Thu Feb 16, 2017 2:15 pm
Forum: General discussion
Topic: [SOLVED] HardwareSerial available() not reporting length of buffered data on Serial1
Replies: 32
Views: 247

Re: HardwareSerial available() not reporting length of buffered data on Serial1

Lookin' around at home, I did find a STM32F103 BAITE Maple Mini clone with the 2.0 bootloader. This sketch using USB DOES WORK THE SAME AS THE ESP8266 output above! SO, if USB serial is broken, it has happened since July 2016 which was the last time I updated the home /Arduino/hardware/STM32 core fo...

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