http://forums.leaflabs.com/topic.php?id=936 A place to share, learn, and grow... en-US Fri, 22 Jan 2016 00:22:23 +0000 http://bbpress.org/?v=1.0.2 q http://forums.leaflabs.com/search.php http://forums.leaflabs.com/topic.php?id=936#post-5810 Sat, 30 Jul 2011 03:25:35 +0000 samtal 5810@http://forums.leaflabs.com/ <p>Hi, </p> <p>Sorry for my silly question.<br /> Why did I expect to get data from the serial2 when I am sending it to the USB?<br /> I'll have to change all print command to one of the serials rather than to the USB. </p> http://forums.leaflabs.com/topic.php?id=936#post-5807 Fri, 29 Jul 2011 21:54:11 +0000 samtal 5807@http://forums.leaflabs.com/ <p>Thanks robodude666</p> <p>I'll have to be patient and wait for a durable solution.<br /> As I wrote, I also have an additional Serial2 connected (via Silabs USB adapter).<br /> I use it mainly to upload the flash (which, I suspect (?) helps me out occasionally with the usb).<br /> I can upload the program via that port, but when opening the Serial Monitor, although it shows the correct port number, I get no data in the window.<br /> I did not yet look into it, but does anyone have an idea?<br /> samtal </p> http://forums.leaflabs.com/topic.php?id=936#post-5796 Fri, 29 Jul 2011 13:38:49 +0000 robodude666 5796@http://forums.leaflabs.com/ <p>There are known issues with the USB not working properly after certain situations. LeafLabs is working on rewriting some of the USB functionality to relieve these issues.</p> <p>Because it's annoying to have to disconnect/reconnect USB for serial communication, I've gotten an FTDI adapter (aka an old Arduino) and using Serial2 for my debugging.</p> <p>-robodude666 </p> http://forums.leaflabs.com/topic.php?id=936#post-5795 Fri, 29 Jul 2011 13:11:30 +0000 samtal 5795@http://forums.leaflabs.com/ <p>Hi,<br /> I am having real trouble with the USB connection.<br /> Every now and then I lose my USB port without any noticeable relation to what I am doing.<br /> I read stars comment above, but could not find any USB 'initialize' function.<br /> Furthermore, the documentation clearly states that the USB is always automatically initialized at startup and is singleton. </p> <p>In my case, on one program upload it works, and on the next I get the USB error message, and the port disappears.<br /> This is extremely annoying, especially that I work remotely on a board that is in another location, and even when at the board, I don't really know how to get it back.<br /> I reset the board, re-connect the usb (with the power), some times it will come back, but some other times I re-flash without even knowing if this helps.<br /> (Fortunately, I also have one additional RS232 connected which makes it easier to revive).<br /> I have tried to change the 'Delay after reset' up and down, for no avail.<br /> By the way: It has nothng to do with my program. The problem can appear also with Maple examples.</p> <p>Can anyone help?<br /> Thanks<br /> samtal </p> http://forums.leaflabs.com/topic.php?id=936#post-5781 Thu, 28 Jul 2011 01:17:29 +0000 stars 5781@http://forums.leaflabs.com/ <p>Own question == ANSWERED!</p> <p>Answer:</p> <pre> // Force init to be called *first*, i.e. before static object allocation. // Otherwise, statically allocated objects that need libmaple may fail. __attribute__((constructor)) void premain() { init(); } </pre> is mandatory and cannot be ommitted. This solves everything! Hooray! </p> http://forums.leaflabs.com/topic.php?id=936#post-5780 Wed, 27 Jul 2011 23:28:58 +0000 stars 5780@http://forums.leaflabs.com/ <p>Also it's my understanding that SerialUSB does not need to be .begin()'d or otherwise initialized; could that be where the error lies? Correct me if I'm mistaken about that. </p> http://forums.leaflabs.com/topic.php?id=936#post-5779 Wed, 27 Jul 2011 23:27:38 +0000 stars 5779@http://forums.leaflabs.com/ <p>Hi! I'm working through some of the basic get-toes-wet steps to maple development, and wrote a limited version of the main.cpp.example to test ADC reading.</p> <p>However, my code causes the maple to no longer mount as /dev/ttyACM (hi from Debian).</p> <p>I've read over main.cpp.example many times but can't seem to pin it down. What relevant code am I missing?</p> <p>Here's mine as sample:</p> <pre> #include "wirish.h" #define BAUD 9600 void print_adc(uint8 pin); void print_adc(uint8 pin){ int sample = analogRead(pin); SerialUSB.print(sample, DEC); } void setup() { //use pins 15-18 for ADC testing pinMode(15, INPUT_ANALOG); pinMode(16, INPUT_ANALOG); pinMode(17, INPUT_ANALOG); pinMode(18, INPUT_ANALOG); } void loop(){ while (SerialUSB.available()) { uint8 input = SerialUSB.read(); SerialUSB.println(input); switch(input) { case 'p': for(int i = 15; i &lt; 19; i++) { print_adc(i); } break; } } } int main() { setup(); while (1) { loop(); } return 0; } </pre>