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error CAN settings in HAL example
Posted: Tue Mar 01, 2016 8:44 pm
by Alexte
testhal\STM32\STM32F1xx\CAN\main.c
Code: Select all
/*
* Internal loopback mode, 500KBaud, automatic wakeup, automatic recover
* from abort mode.
* See section 22.7.7 on the STM32 reference manual.
*/
static const CANConfig cancfg = {
CAN_MCR_ABOM | CAN_MCR_AWUM | CAN_MCR_TXFP,
CAN_BTR_LBKM | CAN_BTR_SJW(0) | CAN_BTR_TS2(1) |
CAN_BTR_TS1(8) | CAN_BTR_BRP(6)
};
with these settings speed CAN bus ~ 428 kBaud
CAN_BTR_BRP=5 speed 500 kBaud
Re: error CAN settings in HAL example
Posted: Wed Mar 02, 2016 10:44 pm
by Giovanni
I will fix it.
BTW, this calculator can be used:
http://www.bittiming.can-wiki.info/Giovanni
Re: error CAN settings in HAL example
Posted: Thu Mar 03, 2016 11:03 am
by Alexte
I just started with this calculator, it is the same error
I am attaching the file correct calculation...
Re: error CAN settings in HAL example
Posted: Mon Dec 31, 2018 11:13 am
by Giovanni
bump
Re: error CAN settings in HAL example
Posted: Wed Mar 27, 2019 5:01 pm
by bitto
Hello.
Just to see I'm doing it right: this configuration yields 1 Mbit/s on my STM32-H107 Olimex board?
Code: Select all
static const CANConfig cancfg_1MBit = {
CAN_MCR_ABOM | CAN_MCR_AWUM | CAN_MCR_TXFP,
CAN_BTR_SJW(0) | CAN_BTR_TS2(2) |
CAN_BTR_TS1(13) | CAN_BTR_BRP(1)
};
Thanks in advance.
Alberto
Re: error CAN settings in HAL example
Posted: Sun Nov 10, 2019 10:22 am
by Giovanni
Hi,
If you used the calculator and if your clock settings are right (mcuconf.h) then yes. A real confirmation would require a test.
Giovanni