CAN错误

你好迈克，
总线错误是一个严重的错误。
CAN总线正在进入总线
如果发送错误计数器超过255。
 
你可以登记入住
ESR字段描述。 （参见RM0045）
有一些有用的
TWRN_INT
 
TWRN_INT - Tx警告中断标志
如果MCR中的WRN_EN位置位，则TX_WRN标志转换时TWRN_INT位置1
从“0”到“1”，意味着Tx错误计数器达到96.如果相应的掩码位在
控制寄存器（TWRN_MSK）置位，产生中断给CPU。该位被清除
把它写成“1”。写作“0”没有效果。
1 = Tx错误计数器从＆lt; 96至ï，³96
0 =没有这种情况
RWRN_INT
RWRN_INT - Rx警告中断标志
如果MCR中的WRN_EN位置位，则RX_WRN标志转换时RWRN_INT位置1
从“0”到“1”，意味着Rx错误计数器达到96.如果相应的掩码位在
控制寄存器（RWRN_MSK）置位，产生中断给CPU。该位被清除
把它写成“1”。写作“0”没有效果。
1 = Rx错误计数器从＆lt; 96至ï，³96
0 =没有这种情况
 最好的祝福
 二万



以下为原文




Hello Mike ,
Bus Error is a serious error.
CAN Bus is entering in Bus off
if the Transmit Error Counter exceed 255.



you can check in
ESR field descriptions. (Cf RM0045)

There are some useful
TWRN_INT

TWRN_INT — Tx Warning Interrupt Flag
If the WRN_EN bit in MCR is asserted, the TWRN_INT bit is set when the TX_WRN flag transition
from ‘0’ to ‘1’, meaning that the Tx error counter reached 96. If the corresponding mask bit in the
Control Register (TWRN_MSK) is set, an interrupt is generated to the CPU. This bit is cleared by
writing it to ‘1’. Writing ‘0’ has no effect.
1 = The Tx error counter transition from < 96 to  96
0 = No such occurrence
RWRN_INT
RWRN_INT — Rx Warning Interrupt Flag
If the WRN_EN bit in MCR is asserted, the RWRN_INT bit is set when the RX_WRN flag transition
from ‘0’ to ‘1’, meaning that the Rx error counters reached 96. If the corresponding mask bit in the
Control Register (RWRN_MSK) is set, an interrupt is generated to the CPU. This bit is cleared by
writing it to ‘1’. Writing ‘0’ has no effect.
1 = The Rx error counter transition from < 96 to  96
0 = No such occurrence
  Best regards

              Erwan