Virtual UART data send M4 to A7 wrong data
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
‎2020-09-03 1:26 AM
call every 40mS :
static uint32_t count;
VIRT_UART_Transmit(cameraCommHandle.huart,(uint8_t *)&count,sizeof(count));
OPENAMP_check_for_message();
count++;
when i printing what i get in linux i got this:
39.99 ms: 262
40.00 ms: 263
40.01 ms: 264
40.00 ms: 265
40.00 ms: 266
39.99 ms: 267
40.00 ms: 268
40.01 ms: 266
40.00 ms: 270
40.00 ms: 271
39.99 ms: 272
40.00 ms: 1
40.01 ms: 274
40.00 ms: 1
40.00 ms: 276
39.99 ms: 277
40.00 ms: 278
and it repeat itself every 256 counts
i attached the c program that reads the serial and prints the what in UARt.
Solved! Go to Solution.
- Labels:
-
STM32MP15 Lines
Accepted Solutions
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
‎2020-09-07 7:39 AM
Hi, the issue was at the flags config. one of the flag was that to take the bytes as console.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
‎2020-09-03 4:46 AM
one more test that i did : its prints 8bit counter with string and 16 bit of dummy.
root@stm32mp1-ground4-mx:/usr/csr/bin# ./read_trigger
971.24 ms: (104) 4 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
499.95 ms: (208) 5 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
499.96 ms: (312) 6 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
500.08 ms: (416) 7 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
499.91 ms: (520) 8 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
500.04 ms: (624) 9 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
499.96 ms: (728) 10 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
500.05 ms: (832) 11 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
499.96 ms: (936) 12 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
500.01 ms: (1040) 10 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
500.03 ms: (1144) 14 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
499.98 ms: (1248) 15 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
499.97 ms: (1352) 16 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
read 103 bytes instead of 104
500.04 ms: (1455) 97 0 - bcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
499.97 ms: (1559) 18 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
read 103 bytes instead of 104
500.02 ms: (1662) 97 0 - bcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
499.96 ms: (1766) 20 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
500.05 ms: (1870) 21 0 - abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrst
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
‎2020-09-07 7:31 AM
Hi @SMich.1​
This is some hint I received from expert.
In your code it could be worth to add a check that "rien==4 " to confirm success of read().
Also you can start to implement with further trace using the dynamic debug framework :
echo -n 'file virtio_rpmsg_bus.c +p' > /sys/kernel/debug/dynamic_debug/control
You will get a trace for all messages received by A7, helping to narrowing down where the issue may come from
Hope it help,
Olivier
In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
‎2020-09-07 7:39 AM
Hi, the issue was at the flags config. one of the flag was that to take the bytes as console.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content
‎2020-09-07 7:55 AM
Hi @SMich.1​
Good news !
For reference could you please details further which flag you are talking about ?
Thx
Olivier
In order to give better visibility on the answered topics, please click on 'Accept as Solution' on the reply which solved your issue or answered your question.
