#include "MG32x02z_DRV.H"
#include "MG32x02z_GPIO_DRV.H"
#include <stdio.h>
typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
typedef uint64_t u64;
#define Dummy_Data 0xFFFFFFFF
#define SPI_NSS PB0 // SPI_NSS
#define URTX URT0
void SPI0_IRQHandler(void) //此处函数名不可改动
{
if(SPI_GetSingleFlagStatus(SPI0, SPI_RXF) == DRV_Happened) // Wait RXF flag
{
uint32_t RDAT;
PE13=0;
RDAT = SPI_GetRxData(SPI0); // Get received data
printf("RX:0x%02X\n",RDAT);
PE13=1;
}
}
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_SPI0_CKS, CK_APB);
CSC_PeriphProcessClockSource_Config(CSC_UART0_CKS, CK_APB);
CSC_PeriphOnModeClock_Config(CSC_ON_SPI0,ENABLE);
CSC_PeriphOnModeClock_Config(CSC_ON_UART0,ENABLE);
CSC_PeriphOnModeClock_Config(CSC_ON_PortB,ENABLE);
CSC_PeriphOnModeClock_Config(CSC_ON_PortE,ENABLE);
ProtectModuleReg(CSCprotect);
}
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 URT0_Init(void)
{
URT_BRG_TypeDef URT_BRG;
URT_Data_TypeDef DataDef;
PIN_InitTypeDef PINX_InitStruct;
//==Set GPIO init
//PB8 PPO TX ,PB9 ODO 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 = PB8_AF_URT0_TX; // 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 = PB9_AF_URT0_RX; // 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 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
}
void InitSPI0(void)
{
PIN_InitTypeDef PINX_InitStruct;
//===Set CSC init====
//MG32x02z_CSC_Init.h(Configuration Wizard)
//Select CK_HS source = CK_IHRCO
//Select IHRCO = 12Mz
//Select CK_MAIN Source = CK_HS
//Configure PLL->Select APB Prescaler = CK_MAIN/1
/*=== 1. Enable CSC to SPI clock ===*/
//[A] When Use Wizard
//Configure Peripheral On Mode Clock->SPI0 = Enable and Select SPI0_PR Source = CK_APB
//Configure Peripheral On Mode Clock->Port B = Enable
//[B] When Use Driver
// UnProtectModuleReg(CSCprotect); // Unprotect CSC module
// CSC_PeriphOnModeClock_Config(CSC_ON_SPI0, ENABLE); // Enable SPI0 module clock
// CSC_PeriphOnModeClock_Config(CSC_ON_PortB, ENABLE); // Enable PortB clock
// CSC_PeriphProcessClockSource_Config(CSC_SPI0_CKS, CK_APB); // CK_SPIx_PR = CK_APB = 12MHz
// ProtectModuleReg(CSCprotect); // protect CSC module
/*=== 2. Default Initial SPI ===*/
SPI_DeInit(SPI0);
/*=== 3. Configure clock divider ===*/ // SPI clock = 1MHz
SPI_Clock_Select(SPI0, SPI_CK_SPIx_PR); // CK_SPIx = CK_SPIx_PR
SPI_PreDivider_Select(SPI0, SPI_PDIV_2); // PDIV outpu = CK_SPIx /2
SPI_Prescaler_Select(SPI0, SPI_PSC_3); // Prescaler outpu = PDIV outpu /3
SPI_Divider_Select(SPI0, SPI_DIV_2); // DIV outpu = PDIV outpu /2
/*=== 4. Configure SPI data line, mode and data size... ===*/
SPI_DataLine_Select(SPI0, SPI_Standard); // SPI data line 1-line Bidirectional~ SPI0_MOSI
SPI_ModeAndNss_Select(SPI0, SPI_SlaveWithNss); // Slave
SPI_NSSInputSignal_Select(SPI0,SPI_NssPin); // Nss
SPI_ClockPhase_Select(SPI0, SPI_LeadingEdge); // CPHA = 0
SPI_ClockPolarity_Select(SPI0, SPI_Low); // CPOL = 0
SPI_FirstBit_Select(SPI0, SPI_MSB); // MSB first
SPI_DataSize_Select(SPI0, SPI_8bits); // Data size 8bits
SPI_SlaveModeReceivedThreshold_Select(SPI0, SPI_1Byte); // Set SPI0 received data buffer high threshold
/*=== 5. Config SPI0 IO ===*/
PINX_InitStruct.PINX_Mode = PINX_Mode_Digital_I; // 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 = 2; // Pin AFS = 2
GPIO_PinMode_Config(PINB(0),&PINX_InitStruct); // NSS setup at PB0
GPIO_PinMode_Config(PINB(2),&PINX_InitStruct); // CLK setup at PB2
GPIO_PinMode_Config(PINB(3),&PINX_InitStruct); // MOSI setup at PB3
PINX_InitStruct.PINX_Mode = PINX_Mode_PushPull_O; // Setting pusu pull mode
GPIO_PinMode_Config(PINB(1),&PINX_InitStruct); // MISO setup at PB1
PINX_InitStruct.PINX_Mode = PINX_Mode_OpenDrain_O; // Setting pusu pull mode
PINX_InitStruct.PINX_Alternate_Function = 0; // Pin AFS = 0
GPIO_PinMode_Config(PINE(13),&PINX_InitStruct); // D4 setup at PE13
GPIO_PinMode_Config(PINE(14),&PINX_InitStruct); // D4 setup at PE13
GPIO_PinMode_Config(PINE(15),&PINX_InitStruct); // D6 setup at PE15
/*=== 6. Enable SPI ===*/
SPI_IT_Config(SPI0, SPI_INT_RX,ENABLE); //增加SPI0中断接收使能
SPI_ITEA_Cmd(SPI0, ENABLE); //使能SPI0中断
SPI_Cmd(SPI0, ENABLE); // Enable SPI
}
int main()
{
CSC_Init();
InitSPI0();
NVIC_EnableIRQ(SPI0_IRQn); //使能SPI0的IRQ
URT0_Init();
printf("hello\n");
while(1)
{
}
}
从我注释的代码中可以看出,使能中断的过程并不多,就几行就行,但是为什么我要着重注释IRQHandler中断服务程序的函数名不能动呢?从startup.s中可以看出,他们默认使用了这个函数名作为服务程序,因此函数名按照startup.s来即可。