【M0】 MG32F02A 学习笔记⑳ IIC主机模式

ti

   上回我们说到了MG32F02A的UART0 SPI的使用。
   突然发现原来IIC还没挂上来。。
   由于代码比较多，就先只挂主机的吧：

#include "MG32x02z_DRV.H"
#include "iic.h"
#include
#include "MG32x02z_I2C_DRV.h"
I2C_Struct* I2Cx;
typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
typedef uint64_t u64;
#define URTX URT0
#define MYBINARYIMAGE2_LENGTH 20
I2C_HandleTypeDef gSI2C0_Handle;
I2C_HandleTypeDef gSI2C1_Handle;
uint8_t SendBuf[MYBINARYIMAGE2_LENGTH]={0};
uint8_t const String0[] = {"Wel"};
uint8_t lDataBuffer[80];
void Systick_Handler(void)
{
//to do......
IncTick();
}
void CSC_Init (void)
{
CSC_PLL_TyprDef CSC_PLL_CFG;
UnProtectModuleReg(MEMprotect); // Setting flash wait state
MEM_SetFlashWaitState(MEM_FWAIT_ONE); // 50MHz> Sysclk >=25MHz
ProtectModuleReg(MEMprotect);
UnProtectModuleReg(CSCprotect);
CSC_CK_APB_Divider_Select(APB_DIV_1); // Modify CK_APB divider APB=CK_MAIN/1
CSC_CK_AHB_Divider_Select(AHB_DIV_1); // Modify CK_AHB divider AHB=APB/1
/* CK_HS selection */
CSC_IHRCO_Select(IHRCO_12MHz); // IHRCO Sel 12MHz
CSC_IHRCO_Cmd(ENABLE);
while(CSC_GetSingleFlagStatus(CSC_IHRCOF) == DRV_Normal);
CSC_ClearFlag(CSC_IHRCOF);
CSC_CK_HS_Select(HS_CK_IHRCO); // CK_HS select IHRCO
/* PLL */
/**********************************************************/
CSC_PLL_CFG.InputDivider=PLLI_DIV_2; // 12M/2=6M
CSC_PLL_CFG.Multiplication=PLLIx16; // 6M*16=96M
CSC_PLL_CFG.OutputDivider=PLLO_DIV_2; // PLLO=96M/2=48M
CSC_PLL_Config(&CSC_PLL_CFG);
CSC_PLL_Cmd(ENABLE);
while(CSC_GetSingleFlagStatus(CSC_PLLF) == DRV_Normal);
CSC_ClearFlag(CSC_PLLF);
/**********************************************************/
/* CK_MAIN */
CSC_CK_MAIN_Select(MAIN_CK_HS);
/* Configure ICKO function */
/* Configure peripheral clock */
CSC_PeriphProcessClockSource_Config(CSC_I2C0_CKS, CK_APB);
CSC_PeriphProcessClockSource_Config(CSC_UART0_CKS, CK_APB);
CSC_PeriphOnModeClock_Config(CSC_ON_I2C0,ENABLE);
CSC_PeriphOnModeClock_Config(CSC_ON_UART0,ENABLE);
CSC_PeriphOnModeClock_Config(CSC_ON_PortB,ENABLE);
CSC_PeriphOnModeClock_Config(CSC_ON_PortE,ENABLE);
ProtectModuleReg(CSCprotect);
}
void I2C0_ByteMode_Master_Init(void)
{
I2C_InitTypeDef SI2C0_Init;
SI2C0_Init.Instance = I2C0;
SI2C0_Init.CK_I2C_PR_Frequency = 12000000;
SI2C0_Init.SCL_Clock = 400000;
I2C_ByteMode_Init(&SI2C0_Init);
gSI2C0_Handle.Instance = I2C0;
printf("I2C_IsDeviceReadynr");
}
DRV_Return I2C_ByteMode_Init(I2C_InitTypeDef *SI2C)
{
uint16_t lI2C_Pre = 1;
uint16_t lI2C_DIV = 1;
uint16_t lI2C_HT_LT = 0;
uint16_t lI2C_LT;
uint16_t lI2C_HT;
PIN_InitTypeDef PINX_InitStruct;
//===== Check I2C Busy =====//
if(__I2C_GetFlagStatus(SI2C->Instance, I2C_FLAG_BUSYF))
return DRV_Busy;
__I2C_Disable(SI2C->Instance);
//===== GPIO Initial =====//
//===== CSC for GPIO Config =====//
UnProtectModuleReg(CSCprotect); // Unprotect CSC module
CSC_PeriphOnModeClock_Config(CSC_ON_PortB, ENABLE); // Enable PortB clock
ProtectModuleReg(CSCprotect); // protect CSC module
// //===== GPIO Config =====//
PINX_InitStruct.PINX_Mode = PINX_Mode_OpenDrain_O; // Pin select pusu pull mode
PINX_InitStruct.PINX_PUResistant = PINX_PUResistant_Enable; // Enable pull up resistor
PINX_InitStruct.PINX_Speed = PINX_Speed_High;
PINX_InitStruct.PINX_OUTDrive = PINX_OUTDrive_Level0; // Pin output driver full strength.
PINX_InitStruct.PINX_FilterDivider = PINX_FilterDivider_Bypass; // Pin input deglitch filter clock divider bypass
PINX_InitStruct.PINX_Inverse = PINX_Inverse_Disable; // Pin input data not inverse
PINX_InitStruct.PINX_Alternate_Function = 2; // Pin AFS = 2
if(SI2C->Instance == I2C0)
{
GPIO_PinMode_Config(PINB(10),&PINX_InitStruct); // I2C0 SCL setup at PB10
GPIO_PinMode_Config(PINB(11),&PINX_InitStruct); // I2C0 SDA setup at PB11
// GPIO_PinMode_Config(PINC(4),&PINX_InitStruct); // I2C0 SCL setup at PC4
// GPIO_PinMode_Config(PINC(5),&PINX_InitStruct); // I2C0 SDA setup at PC5
// GPIO_PinMode_Config(PINC(8),&PINX_InitStruct); // I2C0 SCL setup at PC8
// GPIO_PinMode_Config(PINC(9),&PINX_InitStruct); // I2C0 SDA setup at PC9
// GPIO_PinMode_Config(PIND(5),&PINX_InitStruct); // I2C0 SCL setup at PD5
// GPIO_PinMode_Config(PIND(6),&PINX_InitStruct); // I2C0 SDA setup at PD6
// GPIO_PinMode_Config(PINE(0),&PINX_InitStruct); // I2C0 SCL setup at PE0
// GPIO_PinMode_Config(PINE(1),&PINX_InitStruct); // I2C0 SDA setup at PE1
}
if(SI2C->Instance == I2C1)
{
GPIO_PinMode_Config(PINC(10),&PINX_InitStruct); // I2C1 SCL setup at PC10
GPIO_PinMode_Config(PINC(11),&PINX_InitStruct); // I2C1 SDA setup at PC11
GPIO_PinMode_Config(PIND(8),&PINX_InitStruct); // I2C1 SCL setup at PD8
GPIO_PinMode_Config(PIND(9),&PINX_InitStruct); // I2C1 SDA setup at PD9
GPIO_PinMode_Config(PINE(2),&PINX_InitStruct); // I2C1 SCL setup at PE2
GPIO_PinMode_Config(PINE(3),&PINX_InitStruct); // I2C1 SDA setup at PE3
}
//===== I2C Initial =====//
//=== CSC for I2C Config ===//
UnProtectModuleReg(CSCprotect); // Unprotect CSC module
if(SI2C->Instance == I2C0)
CSC_PeriphOnModeClock_Config(CSC_ON_I2C0, ENABLE); // Enable I2C0 module clock
if(SI2C->Instance == I2C1)
CSC_PeriphOnModeClock_Config(CSC_ON_I2C1, ENABLE); // Enable I2C1 module clock
ProtectModuleReg(CSCprotect); // protect CSC module
//=== I2C Config ===//
//===== I2C Output Clock Config =====//
// CK_I2C_PR
// SCL Output Clock
// HT + LT, <= 32 >=9, CK_I2C_PR / SCL Clock / Prescaler / DIV
do{
lI2C_HT_LT = SI2C->CK_I2C_PR_Frequency / SI2C->SCL_Clock / lI2C_Pre / lI2C_DIV;
if((lI2C_HT_LT >= 32) || (lI2C_HT_LT <=9))
{
lI2C_Pre ++;
if(lI2C_Pre > 8)
{
lI2C_Pre = 1;
lI2C_DIV ++;
}
}
}while((lI2C_HT_LT >= 32) || (lI2C_HT_LT <=9));
lI2C_LT = (lI2C_HT_LT >> 1);
lI2C_HT = lI2C_HT_LT - lI2C_LT;
__I2C_SetClockSource(SI2C->Instance, I2C_CLK_SRC_PROC);
__I2C_SetClockPrescaler(SI2C->Instance, lI2C_Pre - 1);
__I2C_SetClockDivider(SI2C->Instance, lI2C_DIV - 1);
__I2C_SetSCLHighTime(SI2C->Instance, lI2C_HT - 1);
__I2C_SetSCLLowTime(SI2C->Instance, lI2C_HT - 1);
//===== I2C Opration Mode Config =====//
__I2C_GeneralCallAddress_Disable(SI2C->Instance);
__I2C_SlaveAddressDetect_Disable(SI2C->Instance, (I2C_SADR_1 | I2C_SADR_2));
//===== I2C Interrupt Config =====//
if(SI2C->Instance == I2C0)
{
NVIC_EnableIRQ(I2C0_IRQn);
NVIC_SetPriority(I2C0_IRQn, 1); // Suggest SYSTICK Priority = 0
// Other Priority > 0
}
if(SI2C->Instance == I2C1)
{
NVIC_EnableIRQ(I2Cx_IRQn);
NVIC_SetPriority(I2Cx_IRQn, 1); // Suggest SYSTICK Priority = 0
// Other Priority > 0
}
__I2C_ITEA_Disable(SI2C->Instance);
__I2C_IT_Disable(SI2C->Instance, (I2C_IT_TMOUT | I2C_IT_EVENT | I2C_IT_ERR | I2C_IT_BUF | I2C_IT_WUP));
//===== I2C Timeout Config =====//
__I2C_TMO_Disable(SI2C->Instance);
__I2C_SetTimeOutClockSource(SI2C->Instance, I2C_TMO_CKS_DIV64);
__I2C_SetTimeOutDetectionMode(SI2C->Instance, I2C_TMO_MDS_GENERAL);
__I2C_SetTimeOutCount(SI2C->Instance, I2C_TMO_MDS_GENERAL);
//===== I2C Enable =====//
__I2C_Enable(SI2C->Instance);
// I2Cx->CR0.B[0] |= I2C_CR0_BUF_EN_enable_b0;
return DRV_Success;
}
void I2C_Delay(uint32_t Delay)
{
}
DRV_Return I2C_IsDeviceReady(I2C_HandleTypeDef *SI2C, uint16_t DevAddress, uint32_t Trials)
{
//-----Check I2C Busy ------------------
if(__I2C_GetFlagStatus(SI2C->Instance, I2C_FLAG_BUSYF) != CLR)
return DRV_Busy;
//-----Set_Config-----------------------
SI2C->State.W = 0;
SI2C->SlaveAddress = DevAddress & 0xFFFE;
SI2C->pData = 0x00000000;
SI2C->Count = 0;
SI2C->Control.W = I2C_XferNext_STOP;
//-----Start----------------------------
do{
SI2C->State.W = 0;
Set_STA_STO_AA_100(SI2C->Instance);
do{
I2C_ByteMode_Handle(SI2C);
}while(SI2C->State.MBit.Done == 0);
if((SI2C->State.W & (I2C_State_BusError |
I2C_State_ArbitrationLost |
I2C_State_NACK)) == 0)
return DRV_Success;
I2C_Delay(1);
}while(-- Trials > 0);
return DRV_Failure;
}
void I2C_ByteMode_Handle(I2C_HandleTypeDef *SI2C)
{
uint8_t lState;
if(__I2C_GetStateFlag(SI2C->Instance) == 0)
return;
lState = __I2C_GetStatusCode(SI2C->Instance);
switch(lState){
case 0x00: // Bus Error
SI2C->State.W |= I2C_State_BusError |
I2C_State_Done;;
break;
case 0x08: // SLA+W sent and ACK received
case 0x10: // Repeated start condition
Set_STA_STO_AA_000(SI2C->Instance);
__I2C_SendSBUF(SI2C->Instance, ((uint8_t)SI2C->SlaveAddress));
break;
case 0x18: // MT SLA+W sent and ACK received
case 0x28: // MT DATA sent and ACK received
if(SI2C->Count == 0)
{
Set_STA_STO_AA_010(SI2C->Instance);
__I2C_ClearStateFlag(SI2C->Instance);
while(__I2C_GetStatusCode(SI2C->Instance) == lState);
lState = __I2C_GetStatusCode(SI2C->Instance);
SI2C->State.W |= I2C_State_Done;
return;
}
__I2C_SendSBUF(SI2C->Instance, ((uint8_t)*SI2C->pData));
SI2C->pData ++;
SI2C->Count --;
break;
case 0x20: // MT SLA+W sent NACK received
case 0x30: // MT DATA sent NACK received
case 0x48: // MR SLA+R sent NACK received
Set_STA_STO_AA_010(SI2C->Instance);
__I2C_ClearStateFlag(SI2C->Instance);
while(__I2C_GetStatusCode(SI2C->Instance) == lState);
lState = __I2C_GetStatusCode(SI2C->Instance);
SI2C->State.W |= I2C_State_NACK |
I2C_State_Done;
return;
case 0x38: // Arbitration lost
Set_STA_STO_AA_000(SI2C->Instance);
SI2C->State.W |= I2C_State_ArbitrationLost |
I2C_State_Done;
break;
case 0x40: // SLA+R sent and ACK received
Set_STA_STO_AA_001(SI2C->Instance);
case 0x50: // Data Received and ACK sent
if(SI2C->Count <= 1)
Set_STA_STO_AA_000(SI2C->Instance);
*SI2C->pData = __I2C_ReceiveSBUF(SI2C->Instance);
SI2C->Count--;
SI2C->pData++;
break;
case 0x58: // Data Received and NACK sent
if((SI2C->Control.W & I2C_XferNext_Mask) == I2C_XferNext_RepeatStart)
Set_STA_STO_AA_100(SI2C->Instance);
else
Set_STA_STO_AA_010(SI2C->Instance);
SI2C->State.W |= I2C_State_Done;
break;
//-------------------------------------
case 0x60: // Own SLA+W has bee Received ACK has been returned
case 0x68: // Arbitration lost in SLA+R/W as master,
// Own SLA+W has been Received ACK has bee returned
case 0x70: // General Call address has been received ACK has been returned
case 0x78: // Arbitration lost in SLA+R/W as master,
// General Call address has been received ACK has been returned
case 0x80: // Data byte has been received ACK has been return
case 0x88: // Data byte has been received Not ACK has been return
case 0x90: // Previously address with General Call address
// Data byte has been received ACK has been return
case 0x98: // Previously address with General Call address
// Data byte has been received Not ACK has been return
case 0xA0: // A STOP or repeated START has been received while will addressed as SLV/REC
case 0xA8: // Own SLA+R has bee Received ACK has been returned
case 0xB0: // Arbitration lost in SLA+R/W as master,
// Own SLA+R has been Received ACK has bee returned
case 0xB8: // Data byte in SIDAT has been transmitted ACK has been received
case 0xC0: // Data byte or Last data byte in SIDAT has been transmitted Not ACK has been received
case 0xC8: // Last Data byte in SIDAT has been transmitted ACK has been received
case 0xD0:
case 0xD8:
case 0xE0:
case 0xE8:
case 0xF0:
case 0xF8: // Bus Idle
default:
break;
}
__I2C_ClearStateFlag(SI2C->Instance);
while(__I2C_GetStateFlag(SI2C->Instance) != 0);
}
DRV_Return I2C_ByteMode_MasterTransmit(I2C_HandleTypeDef *SI2C, uint16_t DevAddress, uint8_t *pData, uint16_t Lenth)
{
//-----Check----------------------------
if(__I2C_GetFlagStatus(SI2C->Instance, I2C_FLAG_BUSYF) != CLR)
return DRV_Busy;
//-----Set_Config-----------------------
SI2C->State.W = 0;
SI2C->SlaveAddress = DevAddress & 0xFFFE;
SI2C->pData = pData;
SI2C->Count = Lenth;
SI2C->Control.W = I2C_XferNext_STOP;
//-----Start----------------------------
Set_STA_STO_AA_100(SI2C->Instance);
do{
I2C_ByteMode_Handle(SI2C);
}while(SI2C->State.MBit.Done == 0);
if((SI2C->State.W & (I2C_State_BusError |
I2C_State_ArbitrationLost |
I2C_State_NACK)) != 0)
return DRV_Failure;
return DRV_Success;
}
DRV_Return I2C_ByteMode_MasterReceive(I2C_HandleTypeDef *SI2C, uint16_t DevAddress, uint8_t *pData, uint16_t Lenth)
{
//-----Check----------------------------
if(__I2C_GetFlagStatus(SI2C->Instance, I2C_FLAG_BUSYF) != CLR)
return DRV_Busy;
//-----Set_Config-----------------------
SI2C->State.W = 0;
SI2C->SlaveAddress = DevAddress | 0x0001;
SI2C->pData = pData;
SI2C->Count = Lenth;
SI2C->Control.W = I2C_XferNext_STOP;
//-----Start----------------------------
Set_STA_STO_AA_100(SI2C->Instance);
do{
I2C_ByteMode_Handle(SI2C);
}while(SI2C->State.MBit.Done == 0);
if((SI2C->State.W & (I2C_State_BusError |
I2C_State_ArbitrationLost |
I2C_State_NACK)) != 0)
return DRV_Failure;
return DRV_Success;
}
void Sample_URT0_Init(void)
{
URT_BRG_TypeDef URT_BRG;
URT_Data_TypeDef DataDef;
PIN_InitTypeDef PINX_InitStruct;
//==Set CSC init
//MG32x02z_CSC_Init.h(Configuration Wizard)
//Select CK_HS source = CK_IHRCO
//Select IHRCO = 11.0592M
//Select CK_MAIN Source = CK_HS
//Configure PLL->Select APB Prescaler = CK_MAIN/1
//Configure Peripheral On Mode Clock->Port B/URT0 = Enable
//Configure Peripheral On Mode Clock->URT0->Select URT0_PR Source = CK_APB(11.0592)
//==Set GPIO init
//MG32x02z_GPIO_Init.h(Configuration Wizard)->Use GPIOB->Pin8/9
//GPIO port initial is 0xFFFF
//Pin8 mode is PPO/Pin9 mode is ODO
//Pin8/9 pull-up resister Enable
//Pin8/9 function URT0_TX/RX
PINX_InitStruct.PINX_Mode = PINX_Mode_PushPull_O; // Pin select Push Pull mode
PINX_InitStruct.PINX_PUResistant = PINX_PUResistant_Enable; // Enable pull up resistor
PINX_InitStruct.PINX_Speed = PINX_Speed_Low;
PINX_InitStruct.PINX_OUTDrive = PINX_OUTDrive_Level0; // Pin output driver full strength.
PINX_InitStruct.PINX_FilterDivider = PINX_FilterDivider_Bypass; // Pin input deglitch filter clock divider bypass
PINX_InitStruct.PINX_Inverse = PINX_Inverse_Disable; // Pin input data not inverse
PINX_InitStruct.PINX_Alternate_Function = 3; // Pin AFS = URT0_TX
GPIO_PinMode_Config(PINB(8),&PINX_InitStruct); // TXD at PB8
PINX_InitStruct.PINX_Mode = PINX_Mode_OpenDrain_O; // Pin select Open Drain mode
PINX_InitStruct.PINX_Alternate_Function = 3; // Pin AFS = URT0_RX
GPIO_PinMode_Config(PINB(9),&PINX_InitStruct); // RXD at PB9
//=====Set Clock=====//
//---Set BaudRate---//
URT_BRG.URT_InteranlClockSource = URT_BDClock_PROC;
URT_BRG.URT_BaudRateMode = URT_BDMode_Separated;
URT_BRG.URT_PrescalerCounterReload = 0; //Set PSR
URT_BRG.URT_BaudRateCounterReload = 3; //Set RLR
URT_BaudRateGenerator_Config(URTX, &URT_BRG); //BR115200 = f(CK_URTx)/(PSR+1)/(RLR+1)/(OS_NUM+1)
URT_BaudRateGenerator_Cmd(URTX, ENABLE); //Enable BaudRateGenerator
//---TX/RX Clock---//
URT_TXClockSource_Select(URTX, URT_TXClock_Internal); //URT_TX use BaudRateGenerator
URT_RXClockSource_Select(URTX, URT_RXClock_Internal); //URT_RX use BaudRateGenerator
URT_TXOverSamplingSampleNumber_Select(URTX, 25); //Set TX OS_NUM
URT_RXOverSamplingSampleNumber_Select(URTX, 25); //Set RX OS_NUM
URT_RXOverSamplingMode_Select(URTX, URT_RXSMP_3TIME);
URT_TX_Cmd(URTX, ENABLE); //Enable TX
URT_RX_Cmd(URTX, ENABLE); //Enable RX
//=====Set Mode=====//
//---Set Data character config---//
DataDef.URT_TX_DataLength = URT_DataLength_8;
DataDef.URT_RX_DataLength = URT_DataLength_8;
DataDef.URT_TX_DataOrder = URT_DataTyped_LSB;
DataDef.URT_RX_DataOrder = URT_DataTyped_LSB;
DataDef.URT_TX_Parity = URT_Parity_No;
DataDef.URT_RX_Parity = URT_Parity_No;
DataDef.URT_TX_StopBits = URT_StopBits_1_0;
DataDef.URT_RX_StopBits = URT_StopBits_1_0;
DataDef.URT_TX_DataInverse = DISABLE;
DataDef.URT_RX_DataInverse = DISABLE;
URT_DataCharacter_Config(URTX, &DataDef);
//---Set Mode Select---//
URT_Mode_Select(URTX, URT_URT_mode);
//---Set DataLine Select---//
URT_DataLine_Select(URTX, URT_DataLine_2);
//=====Set Error Control=====//
// to do...
//=====Set Bus Status Detect Control=====//
// to do...
//=====Set Data Control=====//
URT_RXShadowBufferThreshold_Select(URTX, URT_RXTH_1BYTE);
URT_IdlehandleMode_Select(URTX, URT_IDLEMode_No);
URT_TXGaudTime_Select(URTX, 0);
//=====Enable URT Interrupt=====//
URT_IT_Cmd(URTX, URT_IT_RX, ENABLE);
URT_ITEA_Cmd(URTX, ENABLE);
NVIC_EnableIRQ(URT0_IRQn);
//=====Enable URT=====//
URT_Cmd(URTX, ENABLE);
//==See MG32x02z_URT0_IRQ.c when interrupt in
}
int fputc(int ch,FILE *f)
{
URT_SetTXData(URTX,1,ch);
while(URT_GetITSingleFlagStatus(URTX,URT_IT_TC)==DRV_UnHappened);
URT_ClearITFlag(URTX,URT_IT_TC);
return ch;
}
void UartSendByte(int ch)
{
URT_SetTXData(URTX,1,ch);
while(URT_GetITSingleFlagStatus(URTX,URT_IT_TC)==DRV_UnHappened);
URT_ClearITFlag(URTX,URT_IT_TC);
}
void DMA_Init(void)
{
DMA_BaseInitTypeDef DMATestPattern;
// ------------------------------------------------------------------------
// 1.Enable DMA
DMA_Cmd(ENABLE);
// ------------------------------------------------------------------------
// 2.Enable Channel0
DMA_Channel_Cmd(DMAChannel0, ENABLE);
// ------------------------------------------------------------------------
DMA_BaseInitStructure_Init(&DMATestPattern);
// 3.initial & modify parameter
// DMA channel select
DMATestPattern.DMAChx = DMAChannel0;
// channel x source/destination auto increase address
DMATestPattern.SrcSINCSel = ENABLE;
DMATestPattern.DestDINCSel = DISABLE;
// DMA source peripheral config
DMATestPattern.SrcSymSel = DMA_MEM_Read;
// DMA destination peripheral config
DMATestPattern.DestSymSel = DMA_SPI0_TX;
// DMA Burst size config
DMATestPattern.BurstDataSize = DMA_BurstSize_1Byte;
// DMA transfer data count initial number
DMATestPattern.DMATransferNUM = MYBINARYIMAGE2_LENGTH;
// source/destination config
DMATestPattern.DMASourceAddr = (uint32_t *)&SendBuf;
DMATestPattern.DMADestinationAddr = &SPI0->TDAT;//DMA_URT0_TX;// (uint8_t *)&RcvBuf;
SPI_DMASend_Cmd(SPI0, ENABLE);
DMA_Channel_Cmd(DMAChannel0, ENABLE);
DMA_Base_Init(&DMATestPattern);
}
int main()
{
u32 i;
char RxData;
uint8_t AddrTemp;
PIN_InitTypeDef PINX_InitStruct;
CSC_Init();
PINX_InitStruct.PINX_Mode = PINX_Mode_PushPull_O; // Pin select digital input mode
PINX_InitStruct.PINX_PUResistant = PINX_PUResistant_Enable; // Enable pull up resistor
PINX_InitStruct.PINX_Speed = PINX_Speed_Low;
PINX_InitStruct.PINX_OUTDrive = PINX_OUTDrive_Level0; // Pin output driver full strength.
PINX_InitStruct.PINX_FilterDivider = PINX_FilterDivider_Bypass;// Pin input deglitch filter clock divider bypass
PINX_InitStruct.PINX_Inverse = PINX_Inverse_Disable; // Pin input data not inverse
PINX_InitStruct.PINX_Alternate_Function = 0; // Pin AFS = 0
GPIO_PinMode_Config(PINE(15),&PINX_InitStruct); // D6 setup at PE15
Sample_URT0_Init();
printf("hellon");
I2C0_ByteMode_Master_Init();
i=0;
while(1)
{
i++;
if(i>=500000)
{
i=0;
PE15=0;
if(I2C_IsDeviceReady(&gSI2C0_Handle, 0xA0, 10) != DRV_Success)
printf("Target device is not readynr");
if(I2C_ByteMode_MasterTransmit(&gSI2C0_Handle, 0xA0, (uint8_t *)String0, (sizeof(String0)-1)) != DRV_Success)
printf("Mater transmited data failnr");
if(I2C_ByteMode_MasterReceive(&gSI2C0_Handle, (uint16_t)0xA0, (uint8_t *)lDataBuffer, (sizeof(String0)-1)) != DRV_Success)
printf("Mater received data failnr");
RxData=I2C_ReceiveSBUF(I2C0);
printf("receive:0x%02Xn",RxData);
PE15=1;
}
}
}

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【M0】 MG32F02A 学习笔记⑳ IIC主机模式

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