auracaster/openocd
3
0
Fork 1
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

contrib/firmware: Change USB interruption handling for JTAG/I2C communications

Browse Source 
Before this change, when we send an I2C Bulk data at the same
time while Jtag bitbanging functions execute, the microcontroller
puts JTAG bitbanging on wait and executes all I2C bitbanging
function, which causes problems like loss of Ack in DAP responses
and other errors.

With this commit, When I2C interruption occurs, it sets a variable
to true and continues JTAG bitbanging, when it finish it executes
the I2C bitbang.

Change-Id: Ia80bac21f8a259f4a1176b5346bf74ed0aa6e38b
Signed-off-by: Ahmed BOUDJELIDA <aboudjelida@nanoxplore.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/8074
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
This commit is contained in:
Ahmed BOUDJELIDA
2023-12-22 10:59:52 +01:00
committed by Antonio Borneo
parent b50a8dbe41
commit b9f5262d42
4 changed files with 31 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
contrib/firmware/angie/c/src/protocol.c
View File

@@ -157,30 +157,36 @@ void command_loop(void)
cmd_id_index = 0;
payload_index_in = 0;
/* Wait until host sends EP1 Bulk-OUT packet */
while (!ep1_out)
/* Wait until host sends Bulk-OUT packet */
while ((!ep1_out) && (!ep6_out))
;
ep1_out = false;
/* Execute the commands */
last_command = false;
while (!last_command)
last_command = execute_command();
/* Send back EP6 Bulk-IN packet if required */
if (payload_index_in > 0) {
EP1INBC = payload_index_in;
syncdelay(3);
while (!ep1_in)
;
ep1_in = false;
if (ep6_out) {
/* Execute I2C command */
i2c_recieve();
ep6_out = false;
}
if (ep1_out) {
ep1_out = false;
/* Execute the commands */
last_command = false;
while (!last_command)
last_command = execute_command();
/* Re-arm EP1-OUT after command execution */
EP1OUTBC = 0;
syncdelay(3);
EP1OUTBC = 0;
syncdelay(3);
/* Send back EP1 Bulk-IN packet if required */
if (payload_index_in > 0) {
EP1INBC = payload_index_in;
syncdelay(3);
while (!ep1_in)
;
ep1_in = false;
}
/* Re-arm EP1-OUT after command execution */
EP1OUTBC = 0;
syncdelay(3);
EP1OUTBC = 0;
syncdelay(3);
}
}
}