logging: Do not set CYCCNTENA to zero in swo backend
The log_backend_swo_init function sets the CYCCNTENA bit of the DWT register to 0, disabling the counter (which is necessary for the timing functions. Avoid overwriting the CYCCNTENA bit. Do not try to set read-only bits. Fixes #34341 Signed-off-by: Andrés Manelli <am@toroid.io>
This commit is contained in:
parent
2cff32b6c4
commit
ecf89143da
|
@ -99,7 +99,8 @@ static void log_backend_swo_init(struct log_backend const *const backend)
|
|||
/* Enable unprivileged access to ITM stimulus ports */
|
||||
ITM->TPR = 0x0;
|
||||
/* Configure Debug Watchpoint and Trace */
|
||||
DWT->CTRL = 0x400003FE;
|
||||
DWT->CTRL &= (DWT_CTRL_POSTPRESET_Msk | DWT_CTRL_POSTINIT_Msk | DWT_CTRL_CYCCNTENA_Msk);
|
||||
DWT->CTRL |= (DWT_CTRL_POSTPRESET_Msk | DWT_CTRL_POSTINIT_Msk);
|
||||
/* Configure Formatter and Flush Control Register */
|
||||
TPI->FFCR = 0x00000100;
|
||||
/* Enable ITM, set TraceBusID=1, no local timestamp generation */
|
||||
|
|
Loading…
Reference in a new issue