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目前根据 TCAN455x Driver Library Demo_1.2.1_manifest.html demo 进行修改，跑出 500K 的 CAN bus 送收资料，在 CAN FD bus 的送收上一直实现不了，芯片初始化配置是采用 Init_CAN()；函数来进行的，与 CAN FD 相关的初始化配置如下：
#if 1 /* Configure the CAN bus speeds */ TCAN4x5x_MCAN_Nominal_Timing_Simple TCANNomTiming = {0}; // 500k arbitration with a 40 MHz crystal ((40E6 / 2) / (32 + 8) = 500E3) TCANNomTiming.NominalBitRatePrescaler = 2; // 标称比特率预分频器 TCANNomTiming.NominalTqBeforeSamplePoint = 32; // 采样点之前的标称时间段 TCANNomTiming.NominalTqAfterSamplePoint = 8; // 采样点后的标称时间段 #else /* Configure the CAN bus speeds */ TCAN4x5x_MCAN_Nominal_Timing_Simple TCANNomTiming = {0}; // 500k arbitration with a 40 MHz crystal ((40E6 / 2) / (32 + 8) = 500E3) TCANNomTiming.NominalBitRatePrescaler = 1; TCANNomTiming.NominalTqBeforeSamplePoint = 15; TCANNomTiming.NominalTqAfterSamplePoint = 5; #endif TCAN4x5x_MCAN_Data_Timing_Simple TCANDataTiming = {0}; // 2 Mbps CAN FD with a 40 MHz crystal (40E6 / (15 + 5) = 2E6) TCANDataTiming.DataBitRatePrescaler = 1; TCANDataTiming.DataTqBeforeSamplePoint = 15; TCANDataTiming.DataTqAfterSamplePoint = 5;
/* Configure the MCAN core settings */ TCAN4x5x_MCAN_CCCR_Config cccrConfig = {0}; // Remember to initialize to 0, or you'll get random garbage! cccrConfig.FDOE = 1; // CAN FD mode enable cccrConfig.BRSE = 1; // CAN FD Bit rate switch enable
