CAN1 (senden und empfangen) rennt wunderbar, nur CAN2 gibt Datenmüll raus (wenn auch mit korrektem Timing) und will nichts empfangen -.-
Initialisiert habe ich ihn mit
Code: Alles auswählen
void CAN2_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* CAN GPIOs configuration **************************************************/
/* Enable GPIO clock */
RCC_AHB1PeriphClockCmd(CAN2_GPIO_CLK, ENABLE);
/* Connect CAN pins to AF9 */
GPIO_PinAFConfig(CAN2_COM_PORT, CAN2_RX_SOURCE, GPIO_AF_CAN2);
GPIO_PinAFConfig(CAN2_COM_PORT, CAN2_TX_SOURCE, GPIO_AF_CAN2);
/* Configure CAN RX and TX pins */
GPIO_InitStructure.GPIO_Pin = CAN2_RX_PIN | CAN2_TX_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(CAN_COM_PORT, &GPIO_InitStructure);
/* CAN configuration ********************************************************/
/* Enable CAN clock */
RCC_APB1PeriphClockCmd(CAN2_CLK, ENABLE);
//CAN1
/* CAN register init */
CAN_DeInit(CAN2);
/* CAN cell init */
CAN_DBGFreeze(CAN2, DISABLE);
CAN_InitStructure.CAN_TTCM = DISABLE;
CAN_InitStructure.CAN_ABOM = DISABLE;
CAN_InitStructure.CAN_AWUM = ENABLE;
CAN_InitStructure.CAN_NART = ENABLE;
CAN_InitStructure.CAN_RFLM = DISABLE;
CAN_InitStructure.CAN_TXFP = ENABLE;
CAN_InitStructure.CAN_Mode = CAN_Mode_Normal;
CAN_InitStructure.CAN_SJW = CAN_SJW_2tq;
/* CAN Baudrate = 50 kBps (CAN clocked at 42MHz) */
CAN_InitStructure.CAN_BS1 = CAN_BS1_15tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 4;
CAN_Init(CAN2, &CAN_InitStructure);
/* CAN filter init */
CAN_FilterInitStructure.CAN_FilterNumber = 0;
CAN_FilterInitStructure.CAN_FilterMode = CAN_FilterMode_IdMask;
CAN_FilterInitStructure.CAN_FilterScale = CAN_FilterScale_32bit;
CAN_FilterInitStructure.CAN_FilterIdHigh = 0x0000;
CAN_FilterInitStructure.CAN_FilterIdLow = 0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdHigh = 0x0000;
CAN_FilterInitStructure.CAN_FilterMaskIdLow = 0x0000;
CAN_FilterInitStructure.CAN_FilterFIFOAssignment = 0;
CAN_FilterInitStructure.CAN_FilterActivation = ENABLE;
CAN_FilterInit(&CAN_FilterInitStructure);
/* Transmit Structure preparation */
TxMessage2.StdId = 0x334;
TxMessage2.ExtId = 0x01;
TxMessage2.RTR = CAN_RTR_DATA;
TxMessage2.IDE = CAN_ID_STD;
TxMessage2.DLC = 7;
/* Enable FIFO 0 message pending Interrupt */
CAN_ITConfig(CAN2, CAN_IT_FMP0, ENABLE);
}Ich weiß nicht mehr weiter, die PIC32-Ersatzlieferung (aber da zickten die Status-LEDs und dann muss ich wieder TQFP löten... BÖRKS) ist in weiter Ferne und ich will den Kram endlich ans Laufen bringen
Habe ich was übersehen?
) mal in die Dropbox gehauen: