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Hi All,

I made a simple barometer for my son's Cub Scout belt loop:

https://raw.githubusercontent.com/drf5n/BarometerLCD/master/Breadboard.png

The code is on github at...

I used a Teensy 3.0 to save replacing a Sun Ultra 40 M2 375-3476 motherboard ($500 refurbished) when the fan speed controllers seemed to be shorted out.

By cutting three the blue PWM control...

If you change the last rule of 49-teensy.rules to read:



KERNEL=="ttyACM*", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="04[789]?", MODE:="0666" \
, SYMLINK+="cu.teensy.p$attr{idProduct}...

And for the Teensy 3.1 the compiler flag is
-D__MK20DX256__ so for teensy 3.0 and 3.1 specific code you could wrap it in:



#if defined(__MK20DX256__)|| defined(__MK20DX128__)

...

#endif

https://www.pjrc.com/teensy/loader_cli.html has the sources files.

This worked on mine:


$ OS=MACOSX SDK=/Developer/SDKs/MacOSX10.6.sdk make
cc -O2 -Wall -DUSE_APPLE_IOKIT -isysroot /Developer/SDKs/MacOSX10.6.sdk -o teensy_loader_cli teensy_loader_cli.c...

I took the PJRC SD adaptor and put a 7-pin right-angle header on it with the two extra pins extending beyond MISO, I then connected the +5V to the pin adjacent to MISO and the pad next to the 'V' in...

Some small details for the Teensy 3.0:

The internal reference is 1.2V, can be read with analogRead(39). The internal reference may be chosen with analogReference(INTERNAL),...

The library at http://playground.arduino.cc/main/DHT11Lib worked for me with a Teensy 3.0:



#include <dht11.h> // from http://playground.arduino.cc/main/DHT11Lib
dht11 dht;

// Plug DHT11...

On the older thread, Madox pointed to some hints that might help make the relatively unmaintained USBIP work without the BSOD.

I think Ian started the thread as http://forum.pjrc.com/threads/23741-remote-programming-with-openwrt but it looks like the issue might be that USB/IP cli connects a specific remote USB to a local...

There seems be one in (SIM_UIDH,SIM_UIDMH, SIM_UIDML, SIM_UIDL).

Note that this sketch sometimes seems to hang/or kill the USB serial on my teensy3 after powerup or reload after the '...'. I'm...

@taskman: I seem to crash my teensy at the FTFL_FSTAT = FTFL_FSTAT_CCIF; line in the setup()->read() code below. If I comment out the initiation of the flash command in read(), it produces the full...

http://www.pjrc.com/teensy/loader_cli.html version 2.0 doesn't look like it supports Teensy 3.0

http://www.pjrc.com/teensy/beta/load_linux_only.c looks like it does Teensy 3.0, but linux-only.
...

OT--SysTick documentation: I thought that since this SysTick stuff in doesn't seem to be in the MK20DX128 reference manual at http://www.pjrc.com/teensy/datasheets.html, folks might want to look at...

Blend the ReadASCIIString example and the Blink example.

I've been working on porting a c (non-c++) program to Teensy 3.0 and found this to work to get to a fairly plain hello world response:



mkdir JUNK
cd JUNK
cp -a...

The Makefile doesn't process .ino files into C or C++ files, so I think that all you are getting is a bare 0x4f4 byte file based solely on the mk20128dx.ld file.

You are missing a main() routine...

Paul,

Would it be good to add a -D__MK20DX128__ to in the CPPFLAGS in the Makefile to make it consistent with the Arduino compile?

Or maybe in mk20dx128.h add a #define __MK20DX128__ or an...

Thanks. That helps a lot. I'm sort of messing with porting some ISR()-using code, and I'm happy to not have to mess with it.

Maybe pasting your message on...

CORE_TEENSY seems to be defined during Makefile compilations, but not during default Arduino compilations. I modified the above sketch to check for CORE_TEENSY.

Edit: if I #include "WProgram.h"...

That works in Arduino, but it doesn't seem to get defined using the Makefile. With verbose Arduino compliation output, I see that it is set. And the command line option seems to be set on my Mac...

What's the best way to test for the chip/device being compiled & maybe provide for alternate code for programs on the the teensy 3.0?

I saw some tests in...

If I put that into main.cpp and try to compile it with a Makefile, I get warnings that the attributes are ignored:

main.cpp:44:1: warning: 'signal' attribute directive ignored [-Wattributes]...

I think the mk20dx128.c & mk20dx128.h files now have the appropriate lines to let you set up your own interrupts without modification . The only one that isn't predefined as a weak alias to...

If one needed non-periodic interrupts, like for coordinated-axis stepper motor control as in https://github.com/triffid/Teacup_Firmware/blob/Gen7/timer.c#L85, would trying to use FTM1 (and...

Here's another differential ADC code for the Teensy and Teensy++:



#define MUX_1V1 0b011110 // works for both
#define ADMUX_MASK 0b11111 // MUX4..0 in ADMUX works for both
#define...

640x480*10fps at 8 bits/pixel = 3Mbyte/sec. To get it down to 2Mbit/sec, you'd have to compress it more than 12:1, so you'd have to do all your input, processing, compression, and transmission in...

From the measurements above, it looks like my alligator-clip-breadboard circuit has about 8 counts of noise. At x200 gain and 2.56V AREF, 1 count is 2.56/512/200=25uV, so that's already...

I've been fiddling with the x1 X10 and X200 gain differential ADC on the Teensy++ and hooked it up to a Type K thermocouple. Here's my code so far:



/* SPICE-ish Connections:

USBcable...