Comments (14)
No need for payment -- I intended it to be free. Make sure you have the
latest copy
http://www.cs.indiana.edu/~geobrown/book.pdf
Geoffrey
On Sun, May 29, 2016 at 9:08 AM, Nikolay [email protected] wrote:
Oh, by the way, I downloaded your book on the internets somewhere.
For free, of course.
I guess this thing is supposed to be sold.
Can I donate a few bucks to your paypal account maybe?—
You are receiving this because you commented.
Reply to this email directly, view it on GitHub
#5 (comment),
or mute the thread
https://github.com/notifications/unsubscribe/ABq_UokKhTS3nD-L9B5mTiVtlB0DdXwzks5qGY_GgaJpZM4DG5aJ
.
from stm32-template.
Thank you ! It's always the bits that aren't directly input from the code
repository that cause problems. In any case it's fixed now>
Geoffrey
On Sun, Jun 5, 2016 at 3:33 PM, Nikolay [email protected] wrote:
Hello Geoffrey, I found a small typo in your book on page 80:
// Initialize USART1_Tx
GPIO_InitStruct.GPIO_PIN = GPIO_Pin_9;It should be GPIO_Pin instead.
Had to google it for a bit, because "Why can't it find "gpio_pin" when it
clearly reads "gpio_pin" inside the .h file"—
You are receiving this because you commented.
Reply to this email directly, view it on GitHub
#5 (comment),
or mute the thread
https://github.com/notifications/unsubscribe/ABq_UiX8hm80-037VdJPqW0SO8QIpLNEks5qIyRzgaJpZM4DG5aJ
.
from stm32-template.
Unless you have a pretty good idea already how this works, you'd be better
off with the vl board.
Geoffrey
On Wednesday, December 10, 2014, Nikolay Kuchumov [email protected]
wrote:
Hello.
I didn't find a "send a message" button so I'm creating an "issue".
I'm currently studying your STM32 book and bought (a while ago) an
stm32ldiscovery board as opposed to stm32vldiscovery board.
What do you think should I do: will it be better for me to try to adopt
your template for my stm32l microprocessor or should I order an
stm32vldiscovery?—
Reply to this email directly or view it on GitHub
#5.
from stm32-template.
ok, thanks, I'll order one from digikey
from stm32-template.
Hello Geoffrey.
I'm reading your book once again, chapter 4 now, and my program halts as soon as I stop my GDB debugging session (i use eclipse).
Do you have any idea why is that?
I mean, in the "Debug perspective", i click that red stop button, and the LED isn't blinking anymore because the program just freezes.
from stm32-template.
When you stop the GDB session, what happens if you push the reset button on
the board ? Perhaps with a more detailed explanation of the procedure
you are following, I can help you find the problem. Something like --
- connect board to USB
- start st-util
....
Geoffrey
On Sun, May 29, 2016 at 8:54 AM, Nikolay [email protected] wrote:
Hello Geoffrey.
I'm reading your book once again, chapter 4 now, and my program halts as
soon as I stop my GDB debugging session (i use eclipse).
Do you have any idea why is that?
I mean, in the "Debug perspective", i click that red stop button, and the
LED isn't blinking anymore because the program just freezes.—
You are receiving this because you commented.
Reply to this email directly, view it on GitHub
#5 (comment),
or mute the thread
https://github.com/notifications/unsubscribe/ABq_UiD1saJUC_laWImp3T8R8elNrTM2ks5qGYyWgaJpZM4DG5aJ
.
from stm32-template.
Wow, really, the black RESET button does the trick and the program is running again.
Thanks!
Now I can take it to my work and brag about blinking an LED : )
from stm32-template.
Oh, by the way, I downloaded your book on the internets somewhere.
For free, of course.
I guess this thing is supposed to be sold.
Can I donate a few bucks to your paypal account maybe?
from stm32-template.
Hello Geoffrey, I found a small typo in your book on page 80:
// Initialize USART1_Tx
GPIO_InitStruct.GPIO_PIN = GPIO_Pin_9;
It should be GPIO_Pin
instead.
Had to google it for a bit of time, because "Why can't it find "gpio_pin" when it clearly reads "gpio_pin" inside the .h file"
from stm32-template.
I like the way your book rolls by the way.
Usually it's like "Here's the listing, just copy & paste and run it", "Yeah, whatever".
And this book really isn't gonna give you off anything that easy, it makes you use that brain of yours.
from stm32-template.
I tried to do the exercise 5.3 Echo but I don't understand how to write to the USB UART.
screen
command works as expected and echoes my input.
But how do you send data without screen
?
I googled this answer:
http://unix.stackexchange.com/questions/117037/how-to-send-data-to-a-serial-port-and-see-any-answer
And they tell to use echo
.
But there's no data being received on the RX and it's stuck in the while loop waiting for data
while (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET);
echo
commands simply "freeze" and nothing happens, i.e. echo
command doesn't exit (unless manually interrupted).
If you did encounter this specific issue then maybe you could give me a hint.
Otherwise it may be my OS not working or something else (I'm on OS X hackintosh)
from stm32-template.
In unix like systems, tty's are a bit problematical. You could open the
port (/dev/tty.xxx) as a file
and read/write to it with a program. Here's a bit of code that opens a
tty in "raw" mode. If you do this in a program, then you can treat it
like a normal file. I don't think it works to just cat stuff to the
/dev/tty.xxx file.
Geoffrey
int fd = open(argv[1], O_RDWR | O_NDELAY | O_NOCTTY);
if (fd == -1){
perror("can't open device");
fprintf(stderr,"%s\n", argv[1]);
exit(errno);
}
if (fcntl(fd, F_SETFL, 0) < 0) {
printf("Error clearing O_NONBLOCK\n");
exit(errno);
}
struct termios config, orig_config;
if (tcgetattr(fd, &config) < 0) {
perror("can't get serial attributes");
exit(errno);
}
cfmakeraw(&config);
config.c_cc[VMIN] = 1;
config.c_cc[VTIME] = 10;
config.c_cflag |= CLOCAL | CREAD;
if (tcsetattr(fd, TCSANOW, &config) < 0) {
perror("can't set serial attributes");
exit(errno);
On Sun, Jun 5, 2016 at 6:25 PM, Nikolay [email protected] wrote:
I tried to do the exercise 5.3 Echo but I don't understand how to write to
the USB UART.
screen command works as expected and echoes my input.
But how do you send data without screen?
I googled this answer:http://unix.stackexchange.com/questions/117037/how-to-send-data-to-a-serial-port-and-see-any-answer
But there's no data being received on the RX and it's stuck in the while
loop waiting for datawhile (USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET);
echo commands simply "freeze" and nothing happens, i.e. echo command
doesn't exit (unless manually interrupted).
If you did encounter this specific issue then maybe you could give me a
hint.
Otherwise it may be my OS not working or something else (I'm on OS X
hackintosh)—
You are receiving this because you commented.
Reply to this email directly, view it on GitHub
#5 (comment),
or mute the thread
https://github.com/notifications/unsubscribe/ABq_UiiqLwy0rtSpTRahA8AjEK-a5yZpks5qI0zDgaJpZM4DG5aJ
.
from stm32-template.
Ok, thanks for the tip.
Really, Unixes seem to work with tty
s another way than Linuxes (didn't think of that).
http://stackoverflow.com/questions/18821811/serial-port-hangs
The technical difference is that /dev/tty.* devices will wait (or listen) for DCD (data-carrier-detect), eg, someone calling in, before responding. /dev/cu.* devices do not assert DCD, so they will always connect (respond or succeed) immediately.
Anyway, I found a hacky solution which let me finish the exercise
foo=$1
for (( i=0; i<${#foo}; i++ )); do
echo "${foo:$i:1}" > /dev/cu.SLAB_USBtoUART
done
echo "\r" > /dev/cu.SLAB_USBtoUART
sh echo.sh Testing
(just in case anyone comes here resolving the same issues which is unlikely)
from stm32-template.
Thanks, that's a new approach for me.
Geoffrey
On Sun, Jun 5, 2016 at 7:40 PM, Nikolay [email protected] wrote:
Ok, thanks for the tip.
Really, Unixes seem to work with ttys another way than Linuxes (didn't
think of that).http://stackoverflow.com/questions/18821811/serial-port-hangs
The technical difference is that /dev/tty.* devices will wait (or listen) for DCD (data-carrier-detect), eg, someone calling in, before responding. /dev/cu.* devices do not assert DCD, so they will always connect (respond or succeed) immediately.
Anyway, I found a hacky solution which let me finish the exercise
foo=$1
for (( i=0; i<${#foo}; i++ )); do
echo "${foo:$i:1}" > /dev/cu.SLAB_USBtoUART
doneecho "\r" > /dev/cu.SLAB_USBtoUART
sh echo.sh Testing
(just in case anyone comes here resolving the same issues which is
unlikely)—
You are receiving this because you commented.
Reply to this email directly, view it on GitHub
#5 (comment),
or mute the thread
https://github.com/notifications/unsubscribe/ABq_UiT-7RwC8WqpWL_T7yaFrL7CbL9sks5qI159gaJpZM4DG5aJ
.
from stm32-template.
Related Issues (7)
Recommend Projects
-
React
A declarative, efficient, and flexible JavaScript library for building user interfaces.
-
Vue.js
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
-
Typescript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
-
TensorFlow
An Open Source Machine Learning Framework for Everyone
-
Django
The Web framework for perfectionists with deadlines.
-
Laravel
A PHP framework for web artisans
-
D3
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
-
Recommend Topics
-
javascript
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
-
web
Some thing interesting about web. New door for the world.
-
server
A server is a program made to process requests and deliver data to clients.
-
Machine learning
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
-
Visualization
Some thing interesting about visualization, use data art
-
Game
Some thing interesting about game, make everyone happy.
Recommend Org
-
Facebook
We are working to build community through open source technology. NB: members must have two-factor auth.
-
Microsoft
Open source projects and samples from Microsoft.
-
Google
Google ❤️ Open Source for everyone.
-
Alibaba
Alibaba Open Source for everyone
-
D3
Data-Driven Documents codes.
-
Tencent
China tencent open source team.
from stm32-template.