【经验】AT32F415 CAN驱动的初始化以及数据收发指南
CAN通信是汽车应用项目中非常重要的通信手段,雅特力的微控制器AT32F415包含一路CAN通信,本文通过三个部分简单实现AT32F415 CAN驱动的初始化以及数据收发功能的实现。
第一部分 ----初始化:
1. 定义CAN收发的GPIO接口,RX为GPIOA_11,TX为GPIOA_12
#define CANx_TX GPIO_Pins_12
#define CANx_RX GPIO_Pins_11
#define CANx_TX_GPIO_CLK_ENABLE() RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_GPIOA, ENABLE);
#define CANx_RX_GPIO_CLK_ENABLE() RCC_APB2PeriphClockCmd(RCC_APB2PERIPH_GPIOA, ENABLE);
#define CANx_TX_GPIO_PORT GPIOA
#define CANx_RX_GPIO_PORT GPIOA
static void CAN_GPIO_Configuration(void)
{CANx_TX_GPIO_CLK_ENABLE();
CANx_RX_GPIO_CLK_ENABLE();
GPIO_InitStructure.GPIO_Pins = CANx_TX;
GPIO_InitStructure.GPIO_MaxSpeed = GPIO_MaxSpeed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(CANx_TX_GPIO_PORT, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pins = CANx_RX;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_PU;
GPIO_Init(CANx_RX_GPIO_PORT, &GPIO_InitStructure);
CANx_CLK_ENABLE();
}
2. CAN驱动初始化,主频为144M,CAN的速率为1M,选择驱动CAN1,映射GPIO为CAN1_REMAP10,CAN1_REMAP11 :
static void CAN_Configuration(void)
{
CANx_CLK_ENABLE();
CAN_InitStructure.CAN_TTC = DISABLE;
CAN_InitStructure.CAN_ABO = ENABLE;
CAN_InitStructure.CAN_AWU = ENABLE;
CAN_InitStructure.CAN_NART = ENABLE;
CAN_InitStructure.CAN_RFL = DISABLE;
CAN_InitStructure.CAN_TFP = DISABLE;
CAN_InitStructure.CAN_Mode = CAN_Mode_Normal;
CAN_InitStructure.CAN_SJW = CAN_SJW_1tq;
CAN_InitStructure.CAN_BS1 = CAN_BS1_8tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_3tq;
CAN_InitStructure.CAN_Prescaler = 6;
CAN_Init(CANx, &CAN_InitStructure);
///<SYSCLK=144M, APB1CLK=72M, CAN Baudrate=£¨144/2£©*1000K£©/£¨£¨1+5£©*£¨3+7+2£©£© = 1000K
CAN_FilterInitStructure.CAN_FilterNumber=0;
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;
CAN_FilterInitStructure.CAN_FilterIdHigh=0x0;
CAN_FilterInitStructure.CAN_FilterIdLow=0x0;
CAN_FilterInitStructure.CAN_FilterMskIdHigh=0x0;
CAN_FilterInitStructure.CAN_FilterMskIdLow=0x0;
CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_FIFO0;
CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;
CAN_FilterInit(CANx, &CAN_FilterInitStructure);
CAN_INTConfig(CANx,CAN_INT_RFP0,ENABLE);
}
3. CAN收发中断定义,使能接收中断和定义中断优先级
static void CAN_NVIC_Config(void)
{
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
NVIC_InitStructure.NVIC_IRQChannel = CAN1_RX0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
第二部分----数据发送:
数据发送,发送比对ID为0x200,发射4个字节
static void CAN_transmit_data(void)
{
uint8_t TransmitMailbox;
uint32_t i = 0;
TxMessage.Data[0] = 0xA7;
TxMessage.Data[1] = 0xA7;
TxMessage.Data[2] = 0xA7;
TxMessage.Data[3] = 0xA7;
TxMessage.StdId = 0x200;
TxMessage.ExtId = 0;
TxMessage.IDT = CAN_Id_Standard;
TxMessage.RTR = CAN_RTR_Data;
TxMessage.DLC = 4;
TransmitMailbox = CAN_Transmit(CANx, &TxMessage);
while((CAN_TransmitStatus(CANx, TransmitMailbox) != CANTXOK) && (i != 0xFFFF))
{
i++;
}
}
第三部分----数据接收:
中断接收,判断数据有效与否,通过if ( RxMessage.StdId == 0X200 )判断数据是否为有效数据包
void CAN1_RX0_IRQHandler(void)
{
if (CAN_GetINTStatus (CANx,CAN_INT_RFOV0) == SET )
{
CAN_ClearINTPendingBit (CANx, CAN_INT_RFOV0);
}
if (CAN_GetINTStatus (CANx,CAN_INT_RFFU0) == SET )
{
CAN_ClearINTPendingBit (CANx, CAN_INT_RFFU0);
}
if (CAN_GetINTStatus (CANx,CAN_INT_RFP0) == SET )
{
CAN_Receive(CANx, CAN_FIFO0, &RxMessage);
if ( RxMessage.StdId == 0X200 )
AT32_LEDn_Toggle(LED2);
}
}
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型号- AT32F437ZCT7,AT32F437系列,AT32F437VCT7,AT32F437XXT7,AT32F437ZGT7,AT32F435CDU7,AT32F437ZMT7,AT32F437VGT7,AT32F437VMT7,AT32F437ZXT7,AT32F437RGT7,AT32F437RCT7,AT32F437VXT7,AT32F437RXT7,AT32F435CMT7,AT32F435VGT7,AT32F435ZGT7,AT32F435CGT7,AT32F435RCT7,AT32F435VCT7,AT32F435VMT7,AT32F435RGT7,AT32F435CCT7,AT32F435ZMT7,AT32F435VXT7,AT32F435ZXT7,AT32F435ZCT7,AT32F435系列,AT32F435RXT7,AT32F435XXU7,AT32F435,AT32F435CMU7,AT32F437ZDT7,AT32F437,AT32F435CGU7,AT32F437VDT7,AT32F435CCU7,AT32,AT32F435RMT7,AT32F437RDT7,AT32F435XXT7,AT32F435XM,AT32F435RDT7,AT32F435XG,AT32F437XD,AT32F435VDT7,AT32F437XG,AT32F435CDT7,AT32F437XM,AT32F437RMT7,AT32F435ZDT7,AT32F435XC,AT32F437XC,AT32F435XD
AT32F421系列基于ARM® 32位Cortex®-M4微控制器,配有16 K字节到64 K字节闪存、sLib、10个定时器、1个ADC、1个比较器、7个通信接口数据手册
型号- AT32F421XXU7-4,AT32F421C8T7,AT32F421K4U7,AT32F421K8U7-4,AT32F421K4T7,AT32F421C6T7,AT32F421K8U7,AT32F421C4T7,AT32F421K8T7,AT32F421K6U7,AT32F421G4U7,AT32F421K6T7,AT32F421G6U7,AT32F421G8U7,AT32F421K6U7-4,AT32F421F4P7,AT32F421K4U7-4,AT32F421F6P7,AT32F421F8P7,AT32F421XXU7,AT32F421XXT7,AT32F421XXP7,AT32F421系列,AT32F421
【产品】AT32L021系列低功耗ARM® Cortex®-M0+微控制器,具有高达72MHz的CPU运算速度
雅特力科技AT32L021系列低功耗ARM® Cortex®-M0+微控制器,高达72MHz的CPU运算速度与硬件除法器,最高可支持64KB闪存存储 器(Flash)及8+1KB随机存取存储器(SRAM)(支持奇偶校验),而系统存储器(4KB)除可作启动加载程序(Bootloader)外,也可一次性配置成 一般用户程序和数据区,达到64+4KB的最大空间使用。
新产品 发布时间 : 2021-09-08
AT32F421系列技术手册:基于ARM®32位的Cortex™-M4微控制器,带64 K字节内部闪存sLib、10个定时器、1个ADC、1个比较器、6个通信接口功能
型号- AT32F421C8T7,AT32F421K4U7,AT32F421K8U7-4,AT32F421K4T7,AT32F421C6T7,AT32F421K8U7,AT32F421C4T7,AT32F421K8T7,AT32F421K6U7,AT32F421K6T7,AT32F421G4U7,AT32F421G6U7,AT32F421G8U7,AT32F421K6U7-4,AT32F421F4P7,AT32F421K4U7-4,AT32F421F6P7,AT32F421F8P7,AT32F421
AT32 雅特力MCUs 微控制器产品选型表
型号- AT-SURF-F437,AT32F413CCU7,AT32F437ZCT7,AT32A403ACGU7,AT32F456CCU7,AT32F405CCU7,AT32F455RCT7,AT32L021K6U7-4,AT32F421K6T7,AT32F437VMT7,AT32F425R8T7,AT32M412C8T7,AT32F455CET7,AT32F437RGT7,AT32M412K8U7-4,AT32F423VBT7,AT32F423RBT7-7,AT32A403A 系列,AT32A403ACGT7,AT32A423RBT7-7,AT32A423CCU7,AT32F413CBT7,AT32M416E8P7,AT32F435CMT7,AT32F403ARCT7,AT32L021C4T7,AT32F435ZGT7,AT32F435RCT7,AT32F405CCT7,AT32 A 系列,AT32F403ACET7,AT32F457 系列,AT32F405 系列,AT32A423R8T7,AT32L021K8T7,AT32 L 系列,AT32A423CBT7,AT32L021F8P7,AT32 F 系列,AT32F435CMU7,AT32F437VDT7,AT32F415KBU7-4,AT32F413CBU7,AT32F402CBT7,AT32F405KCU7-4,AT32F407RCT7,AT32L021G4U7,AT32F403ACGU7,AT32F425K8U7-4,AT32F402KBU7-4,AT32F425R8T7-7,AT32F415RCT7,AT32F423VCT7,AT32M412E8P7,AT32M416EBP7,AT32F402CBU7,AT32F457RET7,AT32F456ZCT7,AT32F423T8U7,AT32F457VCT7,AT32F425K6T7,AT32F435CDT7,AT32F405RBT7,AT32A403ARCT7,AT32F421K6U7,AT32F455ZET7,AT32M416C8T7,AT32F421G8U7,AT32F415RBT7-7,AT32F421F4P7,AT32M416KBU7-4,AT32A423CCT7,AT32F456VET7,AT32F413KCU7-4,AT32F423C8T7,AT32A403ACEU7,AT32F437VGT7,AT32F437ZMT7,AT32F423RCT7-7,AT32M412KBU7-4,AT32F455RET7,AT32A423TBU7,AT32A423C8T7,AT32F421K8T7,AT32F455VCT7,AT32M412KBT7,AT32F435 系列,AT32F413C8T7,AT32F415RBT7,AT32F403ARET7,AT32F435CGT7,AT32A423K8U7-4,AT32A403ACET7,AT32F435VCT7,AT32A423C8U7,AT32F403ACGT7,AT32F421C4T7,AT32L021K6T7,AT32A423R8T7-7,AT32F403AVCT7,AT32L021F6P7,AT32F437ZDT7,AT32F415RCT7-7,AT32F435CGU7,AT-LINK-ISO+,AT32F415CCT7,AT32F405KBU7-4,AT32F407VCT7,AT32F405CBU7,AT32F415KCU7-4,AT32A423TCU7,AT32F407RET7,AT32 A,AT32F456 系列,AT32A423CBU7,AT32F435RMT7,AT32 M 系列,AT32L021K8U7,AT32L021,AT32 F,AT-LINK-EZ,AT32 L,AT32 M,AT32A423KBU7-4,AT32F423C8U7,AT32F423 系列,AT32F435RDT7,AT32M416KBT7,AT32L021F8U7,AT32F425K8T7,AT32F405CBT7,AT32A403AVCT7,AT32F421K8U7,AT32F455ZCT7,AT32F457RCT7,AT32A403ARET7,AT32F423TBU7,AT32F421K6U7-4,AT32F421F6P7,AT32F403A,AT32F456RET7,AT32F456VCT7,AT32F455,AT32F456,AT32F457,AT32A403ACCU7,AT32F415CBT7,AT32F415R8T7,AT32F425F8P7,AT32A403A,AT32F437ZGT7,AT32F423R8T7,AT32F455VET7,AT32M412K8T7,AT32F425C6U7,AT32A423T8U7,AT-START,AT32F421K4U7-4,AT32A,AT32F437RCT7,AT32F423CCU7,AT32F402 系列,AT32M412,AT32F425 系列,AT32F402RCT7,AT32M416,AT-LINK,AT32L021C8T7,AT32F403ARGT7,AT32WB415CCU7-7,AT32F415CCU7,AT32A403ACCT7,AT32F403AVET7,AT32F435VMT7,AT32F435RGT7,AT32F421C6T7,AT32A423VBT7,AT32L021K4U7-4,AT32L021K4T7,AT32F423TCU7,AT32F405RBT7-7,AT32F413KBU7-4,AT32F435ZCT7,AT32WB415 系列,AT32M412 系列,AT32F423CCT7,AT32WB415,AT32L021F4P7,AT32L021G8U7,AT32F407VET7,AT32F407RGT7,AT32F403ACCU7,AT32L021K6U7,AT32F423CBU7,AT32F403A 系列,AT32F456CET7,AT32A423RCT7-7,AT32F435VDT7,AT-LINK FAMILY,AT32F415CBU7,AT32L021K8U7-4,AT32A423VCT7,AT32L021F6U7,AT32A403AVET7,AT32 WB,AT32F413 系列,AT32F457ZET7,AT32F425K6U7-4,AT32F425C6T7,AT32F421G4U7,AT32F407 系列,AT32A403ARGT7,AT32A423KCU7-4,AT32M416K8T7,AT32F455CCU7,AT32F455 系列,AT32F421F8P7,AT32F423CBT7,AT32F413RCT7,AT32F456RCT7,AT32F425R6T7-7,AT32M416 系列,AT32F456CEU7,AT32F413,AT32F423V8T7,AT32F415,AT32F437VCT7,AT32F423KCU7-4,AT32F402CCT7,AT32M416K8U7-4,AT32F421K4T7,AT32F435CDU7,AT32F425C8U7,AT32F425R6T7,AT32F455CCT7,AT32F423RBT7,AT32A423 系列,AT32M416CBT7,AT32M412CBT7,AT-LINK-PRO,AT32F423K8U7-4,AT32F421,AT32F402,AT32 WB 系列,AT32F421 系列,AT32F435VGT7,AT32F405,AT32A423RBT7,AT32L021C6T7,AT32F407,AT32F402CCU7,AT32F421C8T7,AT32F435CCT7,AT32F415 系列,AT32F403AVGT7,AT32F405RCT7,AT32F423R8T7-7,AT32F403ACCT7,AT32F435ZMT7,AT32A423V8T7,AT32F413RBT7,AT32F405RCT7-7,AT32F415C8T7,AT32F402RBT7-7,AT32F435,AT32F437,AT32F407VGT7,AT32F435CCU7,AT32L021G6U7,AT32,AT32F402RCT7-7,AT32F403ACEU7,AT32F415K8U7-4,AT32L021K4U7,AT32F415R8T7-7,AT-START系列,AT-LINK+,AT32F437RDT7,AT32F423RCT7,AT32F437 系列,AT32F402KCU7-4,AT32F402RBT7,AT32M412EBP7,AT32F456CCT7,AT32F456ZET7,AT32F425,AT32F413CCT7,AT32A423RCT7,AT32F421K4U7,AT32F421K8U7-4,AT32L021F4U7,AT32F425C8T7,AT32F437RMT7,AT32F457VET7,AT32A403AVGT7,AT32F421G6U7,AT32F455CEU7,AT32F457ZCT7,AT32L021 系列,AT32F423KBU7-4,AT32F435ZDT7,AT32A423
AT32F435/437系列数据手册:基于ARM®32位的Cortex®-M4微控制器+FPU,带256 K字节至4032 K字节内部闪存、sLib、双QSPI、SDRAM、双OTGFS、以太网、摄像头、18个定时器、3个ADC、23个通信接口
型号- AT32F435,AT32F435CMU7,AT32F437ZCT7,AT32F437,AT32F435CGU7,AT32F437VCT7,AT32F437ZGT7,AT32F435CCU7,AT32F437ZMT7,AT32F437VGT7,AT32,AT32F437VMT7,AT32F435RMT7,AT32F437RGT7,AT32F437RCT7,AT32F435CMT7,AT32F435VGT7,AT32F435ZGT7,AT32F435CGT7,AT32F435RCT7,AT32F435VCT7,AT32F435VMT7,AT32F435RGT7,AT32F435CCT7,AT32F437RMT7,AT32F435ZMT7,AT32F435ZCT7
AT32A423系列 基于 ARM®32 位的 Cortex®-M4F 微控制器,配有 64K 字节到 256K 字节闪存、sLib、15 个定时器、1 个 ADC、18 个通信接口(CAN 和 OTGFS)技术手册
型号- AT32A423KBU7-4,AT32A423RCT7-7,AT32A423RBT7,AT32A423K8U7-4,AT32A423RCT7,AT32A423C8U7,AT32A423VCT7,AT32A423TCU7,AT32A423C8T7,AT32A423TBU7,AT32A423VBT7,AT32A423T8U7,AT32A423R8T7-7,AT32A423CBU7,AT32A423KCU7-4,AT32A423R8T7,AT32A423V8T7,AT32A423 系列,AT32A423,AT32A423RBT7-7,AT32A423CCT7,AT32A423CBT7,AT32A423CCU7,AT32A423系列
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可定制板装式压力传感器支持产品量程从5inch水柱到100 psi气压;数字输出压力传感器压力范围0.5~60inH2O,温度补偿范围-20~85ºС;模拟和数字低压传感器可以直接与微控制器通信,具备多种小型SIP和DIP封装可选择。
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定制水冷板尺寸30*30mm~1000*1000 mm,厚度1mm~50mm,散热能力最高50KW,承压可达3MPA;液冷机箱散热能力达500W~100KW。项目单次采购额需满足1万元以上,或年需求5万元以上。
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