[问答]

重新配置CAN FD设置的正确顺序是什么？

问答对人有帮助，内容完整，我也想知道答案 0 我一直在尝试让我的 CAN FD 配置正常运行，但是当我需要为不同的带宽重新配置时序参数时，我遇到了问题。我的原始代码，部分由 CubeMX 生成，如下所示： hfdcan1.Instance = FDCAN1; hfdcan1.Init.FrameFormat = FDCAN_FRAME_FD_BRS; hfdcan1.Init.Mode = FDCAN_MODE_NORMAL; hfdcan1.Init.AutoRetransmission = DISABLE; hfdcan1.Init.TransmitPause = DISABLE; hfdcan1.Init.ProtocolException = DISABLE; hfdcan1.Init.NominalPrescaler = 1; hfdcan1.Init.NominalSyncJumpWidth = 16; hfdcan1.Init.NominalTimeSeg1 = 63; hfdcan1.Init.NominalTimeSeg2 = 16; hfdcan1.Init.DataPrescaler = 1; hfdcan1.Init.DataSyncJumpWidth = 2; hfdcan1.Init.DataTimeSeg1 = 7; hfdcan1.Init.DataTimeSeg2 = 2; hfdcan1.Init.MessageRAMOffset = 0; hfdcan1.Init.StdFiltersNbr = 1; hfdcan1.Init.ExtFiltersNbr = 0; hfdcan1.Init.RxFifo0ElmtsNbr = 2; hfdcan1.Init.RxFifo0ElmtSize = FDCAN_DATA_BYTES_8; hfdcan1.Init.RxFifo1ElmtsNbr = 0; hfdcan1.Init.RxFifo1ElmtSize = FDCAN_DATA_BYTES_8; hfdcan1.Init.RxBuffersNbr = 0; hfdcan1.Init.RxBufferSize = FDCAN_DATA_BYTES_8; hfdcan1.Init.TxEventsNbr = 0; hfdcan1.Init.TxBuffersNbr = 0; hfdcan1.Init.TxFifoQueueElmtsNbr = 2; hfdcan1.Init.TxFifoQueueMode = FDCAN_TX_FIFO_OPERATION; hfdcan1.Init.TxElmtSize = FDCAN_DATA_BYTES_8; if (HAL_FDCAN_Init(&hfdcan1) != HAL_OK) { Error_Handler(); } HAL_GPIO_WritePin(DigitalCanSilentOut01_GPIO_Port, DigitalCanSilentOut01_Pin, GPIO_PIN_RESET); HAL_FDCAN_EnableISOMode(&hfdcan1); HAL_FDCAN_ConfigTxDelayCompensation(&hfdcan1, 6, 0); HAL_FDCAN_EnableTxDelayCompensation(&hfdcan1); HAL_FDCAN_Start(&hfdcan1); 这就是我进行初始配置所需的全部。现在，当我想稍微更改设置时，比如重新配置，我使用这种流程： uint32_t configureFdCan(FDCAN_HandleTypeDef dev, CanConfigurationPreset preset) { if(dev->Instance == FDCAN1) { FDCAN_FilterTypeDef filterDefinition; / Make the transceiver go silent / HAL_GPIO_WritePin(DigitalCanSilentOut01_GPIO_Port, DigitalCanSilentOut01_Pin, GPIO_PIN_SET); / Stop the peripheral from responding / HAL_FDCAN_Stop(dev); while(HAL_FDCAN_GetState(dev) != HAL_FDCAN_STATE_READY) { / Wait here until the device is good for configuration / } HAL_FDCAN_DeInit(dev); while(HAL_FDCAN_GetState(dev) != HAL_FDCAN_STATE_RESET) { / Wait here until the device is good for configuration / } switch (preset) { case CAN_NOBRS_1000: break; case CAN_NOBRS_500: break; case CAN_NOBRS_250: break; case CAN_BRS_1000_8000: dev->Instance = FDCAN1; dev->Init.FrameFormat = FDCAN_FRAME_FD_BRS; dev->Init.Mode = FDCAN_MODE_NORMAL; dev->Init.AutoRetransmission = DISABLE; dev->Init.TransmitPause = DISABLE; dev->Init.ProtocolException = DISABLE; dev->Init.NominalPrescaler = 1; dev->Init.NominalSyncJumpWidth = 16; dev->Init.NominalTimeSeg1 = 63; dev->Init.NominalTimeSeg2 = 16; dev->Init.DataPrescaler = 1; dev->Init.DataSyncJumpWidth = 2; dev->Init.DataTimeSeg1 = 7; dev->Init.DataTimeSeg2 = 2; dev->Init.MessageRAMOffset = 0; dev->Init.StdFiltersNbr = 1; dev->Init.ExtFiltersNbr = 0; dev->Init.RxFifo0ElmtsNbr = 2; dev->Init.RxFifo0ElmtSize = FDCAN_DATA_BYTES_8; dev->Init.RxFifo1ElmtsNbr = 0; dev->Init.RxFifo1ElmtSize = FDCAN_DATA_BYTES_8; dev->Init.RxBuffersNbr = 0; dev->Init.RxBufferSize = FDCAN_DATA_BYTES_8; dev->Init.TxEventsNbr = 0; dev->Init.TxBuffersNbr = 0; dev->Init.TxFifoQueueElmtsNbr = 2; dev->Init.TxFifoQueueMode = FDCAN_TX_FIFO_OPERATION; dev->Init.TxElmtSize = FDCAN_DATA_BYTES_8; / Enable standard frame, instead of the Bosch model / HAL_FDCAN_EnableISOMode(dev); / Set and enable the transceiver compensation / / These values seem to work for now, but a further investigation to CAN FD * examples reveals that ST sets the offset to be equal to (dataSeg1)Prescale, which in our application would be 7. * They set the window to 0 * The example can be found from H745I-DISCO image transmission example. / HAL_FDCAN_ConfigTxDelayCompensation(dev, 6, 0); HAL_FDCAN_EnableTxDelayCompensation(dev); break; case CAN_BRS_1000_5000: break; case CAN_BRS_1000_2000: break; case CAN_BRS_500_2000: break; } / Check for correct initialization / if(HAL_FDCAN_Init(dev) != HAL_OK) { Error_Handler(); } / Configure filter for the communication / filterDefinition.IdType = FDCAN_STANDARD_ID; filterDefinition.FilterIndex = 0; filterDefinition.FilterType = FDCAN_FILTER_RANGE; filterDefinition.FilterConfig = FDCAN_FILTER_TO_RXFIFO0; filterDefinition.FilterID1 = 100; filterDefinition.FilterID2 = 200; HAL_FDCAN_ConfigFilter(dev, &filterDefinition); HAL_FDCAN_ConfigGlobalFilter(dev, FDCAN_FILTER_REJECT, / Command for non-matching standard id / FDCAN_FILTER_REJECT, / Command for non-matching extended id / FDCAN_REJECT_REMOTE, / Command for remote standard frame / FDCAN_REJECT_REMOTE); / command for remote extended frame / / Take transceiver out of silent mode / HAL_GPIO_WritePin(DigitalCanSilentOut01_GPIO_Port, DigitalCanSilentOut01_Pin, GPIO_PIN_RESET); / Start the device again */ if(HAL_FDCAN_Start(dev) == HAL_ERROR){ Error_Handler(); } } 但这会导致通信充满错误。虽然设定是一样的。这是我无法通过使用 HAL 驱动程序命令来实现的吗？我需要直接开始使用寄存器。最好的祝福， 0
2023-2-6 08:09:04　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × wang21cj 该类别下有 44 个回答。邀请回答新星之火12138 该类别下有 41 个回答。邀请回答 chm5 该类别下有 39 个回答。邀请回答 hgimtk 该类别下有 33 个回答。邀请回答 HengDu 该类别下有 30 个回答。邀请回答 jghgfdssas 该类别下有 28 个回答。邀请回答 hwp0415229 该类别下有 28 个回答。邀请回答可口可甜该类别下有 26 个回答。邀请回答 kingnet6688 该类别下有 26 个回答。邀请回答颜刚YanG 该类别下有 26 个回答。邀请回答 zyh34997 该类别下有 25 个回答。邀请回答柱子图宁该类别下有 25 个回答。邀请回答 jenny042 该类别下有 25 个回答。邀请回答 kingnet9999 该类别下有 25 个回答。邀请回答 andyfly7 该类别下有 25 个回答。邀请回答麻酱该类别下有 25 个回答。邀请回答哈哈神神该类别下有 24 个回答。邀请回答成长的小师弟该类别下有 24 个回答。邀请回答 gXDhn 该类别下有 24 个回答。邀请回答 jiangwenwen 该类别下有 24 个回答。邀请回答举报山中老虎相关推荐 • 如何启用planAhead部分重新配置？ 1046 • S32G2 FlexCAN CAN FD使用DMA接收字节顺序错误的原因？怎么解决？ 488 • 求virtex5与部分重新配置教程? 560 • 是否有用于Micron闪存的QSPI重新配置数据? 504 • spartan6部分重新配置如何使用 2223 • 如何重新配置执行ML555板？ 1596 • 怎么使用内部配置访问端口来重新配置FPGA 3829 • PLL配置时钟唤醒后还需要重新配置RCC吗 1769 • SPI Flash打开电源不会重新配置的原因？ 2214 • 如何将STM32H7 CAN FD配置为CAN 2.0？ 255 1个回答

答案对人有帮助，有参考价值 0 通过良好的旧时尚尝试和错误取得了一些进展（手册可以使用带有 HAL 命令的流程图来说明这是如何进行的以及状态是什么等）。但我最终从配置中取消了 DeInit 调用。似乎只需要停止设备，然后配置 .init，运行 Init-function 并再次启动设备。似乎现在可以工作，但我的设置可能有点简单，可以找出更困难的案例。我只在笔记本电脑上针对 Ixxat USB CAN FD 设备运行定制板。

2023-2-6 09:36:58 评论举报王浩