【M0】 MG32F02A 学习笔记⑯ PWM触发ADC

ti

上回我们说到了MG32F02A的BOD唤醒的使用。
想了一下，我已经讲过了PWM，ADC，那么，那我可以尝试一下PWM触发ADC采样呀，好像这东西可以用来驱动直流无刷电机，虽然具体怎么驱动我也不是很了解。

#include "MG32x02z_DRV.H"
#include
typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
typedef uint64_t u64;
#define TM36_PrescalerCounter_Range 120
#define TM36_MainCounter_Range 1000
#define URTX URT0
uint8_t RcvBuf[20] __attribute__((at(0x20003800)));
//if user wants to delay 1ms and CK_TM00_PR is 12MHz.
//The Total clocks is 12M*1ms = 12000.
//User can set "clock prescaler"=100 and "pulse width"=120 .
void Sample_TM36_PWM(void)
{
TM_timeBaseInitTypeDef TM_TimeBase_InitStruct;
// The period = (prescaler*main counter)/12MHz (CK_TM36_PR=12MHz) (s)
// User can update duty cycle by replace CCxB register.
TM_DeInit(TM36);
// ----------------------------------------------------
// 1.TimeBase structure initial
TM_TimeBaseStruct_Init(&TM_TimeBase_InitStruct);
// modify parameter
TM_TimeBase_InitStruct.TM_MainClockDirection =TM_UpCount;
TM_TimeBase_InitStruct.TM_Period = TM36_MainCounter_Range-1;
TM_TimeBase_InitStruct.TM_Prescaler = TM36_PrescalerCounter_Range-1;
TM_TimeBase_InitStruct.TM_CounterMode =Cascade;
TM_TimeBase_Init(TM36, &TM_TimeBase_InitStruct);
// ----------------------------------------------------
// 2.config TM36 channel 1 function
TM_CH1Function_Config(TM36, TM_16bitPWM);
// ----------------------------------------------------
// 3.Enable TM36 channel 1 Output (just output TM36_OC10)
TM_OC10Output_Cmd(TM36,ENABLE);
TM_InverseOC1z_Cmd(TM36, DISABLE);
TM_OC1zOutputState_Init(TM36, CLR);
TM_OC1NOutput_Cmd(TM36, ENABLE);
TM_InverseOC1N_Cmd(TM36, DISABLE);
// ----------------------------------------------------
// 4.set trigger output source
TM_TRGO_Select(TM36, TRGO_OS1);
// ----------------------------------------------------
// 5.set match point (Duty cycle %) for PWM channel0.Less value of CCnA/CCnB,more lighten (1~65536)
TM_SetCC1A(TM36,500);
TM_SetCC1B(TM36,500); // reload value when overflow
// ----------------------------------------------------
// 6.select Edge Align
TM_AlignmentMode_Select(TM36, TM_CenterAlign);
// ----------------------------------------------------
// 7.clear flag
TM_ClearFlag(TM36, TMx_CF0A | TMx_CF1A | TMx_CF2A);
// ----------------------------------------------------
// 8.Timer enable
TM_Timer_Cmd(TM36,ENABLE);
}
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_RX_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 ADC_Init(void)
{
ADC_InitTypeDef ADC_Base;
// make sure :
//===Set CSC init====
//MG32x02z_CSC_Init.h(Configuration Wizard)
//Select CK_HS source = CK_IHRCO
//Select IHRCO = 12M
//Select CK_MAIN Source = CK_HS
//Configure PLL->Select APB Prescaler = CK_MAIN/1
//Configure Peripheral On Mode Clock->ADC = Enable
//Configure Peripheral On Mode Clock->Port A = Enable
//==Set GPIO init
//MG32x02z_GPIO_Init.h(Configuration Wizard)->Use GPIOA->Pin4
//GPIO port initial is 0xFFFF
//Pin4 mode is AIO
//Pin4 function GPA4
ADC_DeInit(ADC0);
// ------------------------------------------------------------------------
// 1.Config ADC base parameter
ADC_BaseStructure_Init(&ADC_Base);
// modify parameter
ADC_Base.ADCMainClockSelect = ADC_CKADC;
ADC_Base.ADC_IntCK_Div = ADC_IntDIV16; // for internal clock divider
// ADC data alignment mode (Right or Left)
ADC_Base.ADC_DataAlign = ADC_RightJustified;
// ADC conversion resolution 8, 10 or 12 bit
ADC_Base.ADC_ResolutionSel = ADC_12BitData;
// ADC overwritten data or keep data
ADC_Base.ADC_DataOverrunEvent = ADC_DataOverWritten;
ADC_Base_Init(ADC0, &ADC_Base);
// ------------------------------------------------------------------------
// 2.Enable ADC
ADC_Cmd(ADC0, ENABLE);
// ------------------------------------------------------------------------
// 3.Config ADC Mode
ADC_ConversionMode_Select(ADC0, ADCMode); // one-shot
ADC_PGA_Cmd(ADC0, DISABLE); // Disable PGA
ADC_SingleDifferentMode_Select(ADC0, ADC_SingleMode); // Single Mode
// ------------------------------------------------------------------------
// 4.Clear all flag
ADC_ClearFlag(ADC0, 0xFFFFFFFF);
// ------------------------------------------------------------------------
// 5.Start Calibration
ADC_StartCalibration(ADC0, ENABLE);
// 6.Select Exnternal Channel (PA4)
ADC_ExternalChannel_Select(ADC0, ADC_ExtAIN4);
// ADC_InternalChannel_Select(ADC0, ADC_INT_IVREF);
// ADC_ExternalChannel_Select(ADC0, ADC_ExtAIN4);
// ------------------------------------------------------------------------
// 7.Trigger Source select and Start conversion
ADC_TriggerSource_Select(ADC0, ADC_TM36_TRGO);
ADC_TriggerEdge_Select(ADC0, ADC_AcceptFallingEdge);
}
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_PeriphOnModeClock_Config(CSC_ON_PortA,ENABLE); // Enable Port A clock
CSC_PeriphOnModeClock_Config(CSC_ON_PortB,ENABLE); // Enable Port B clock
CSC_PeriphOnModeClock_Config(CSC_ON_PortC,ENABLE); // Enable Port C clock
CSC_PeriphOnModeClock_Config(CSC_ON_PortE,ENABLE); // Enable Port D clock
CSC_PeriphProcessClockSource_Config(CSC_TM36_CKS, CK_APB);
CSC_PeriphOnModeClock_Config(CSC_ON_TM36, ENABLE); // Enable TIM36 module clock
CSC_PeriphProcessClockSource_Config(CSC_UART0_CKS, CK_APB);
CSC_PeriphOnModeClock_Config(CSC_ON_UART0, ENABLE); // Enable UART0 module clock
CSC_PeriphProcessClockSource_Config(CSC_ADC0_CKS, CK_APB);
CSC_PeriphOnModeClock_Config(CSC_ON_ADC0, ENABLE); // Enable ADC0 module clock
CSC_PeriphOnModeClock_Config(CSC_ON_DMA,ENABLE);
ProtectModuleReg(CSCprotect);
}
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 = DISABLE;
DMATestPattern.DestDINCSel = ENABLE;
// DMA source peripheral config
DMATestPattern.SrcSymSel = DMA_ADC0_IN;
// DMA destination peripheral config
DMATestPattern.DestSymSel = DMA_MEM_Wrtie;
// DMA Burst size config
DMATestPattern.BurstDataSize = DMA_BurstSize_1Byte;
// DMA transfer data count initial number
DMATestPattern.DMATransferNUM = 20;
// source/destination config
DMATestPattern.DMASourceAddr = &ADC0->DAT0;
DMATestPattern.DMADestinationAddr = (uint32_t *)&RcvBuf;
// Setting M2M simple parameter
ADC_DMA_Cmd(ADC0, ENABLE);
DMA_Channel_Cmd(DMAChannel0, ENABLE);
DMA_Base_Init(&DMATestPattern);
}
int main()
{
int i;
double x;
PIN_InitTypeDef PINX_InitStruct;
CSC_Init();
Sample_URT0_Init();
Sample_TM36_PWM();
ADC_Init();
//==Set GPIO init
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 = 6; // Pin AFS = TIM36 OC10
GPIO_PinMode_Config(PINC(2),&PINX_InitStruct); // Set PC6 function
PINX_InitStruct.PINX_Alternate_Function = 6; // Pin AFS =TIM36 trigger output
GPIO_PinMode_Config(PINC(7),&PINX_InitStruct); // Set PC2 function
PINX_InitStruct.PINX_Mode = PINX_Mode_Analog_IO; // Pin select Analog Input/Output mode
PINX_InitStruct.PINX_Alternate_Function = 0; // Pin AFS = GPA
GPIO_PinMode_Config(PINA(4),&PINX_InitStruct); // Set PA4 function
printf("hellon");
i=0;
while(1)
{
i++;
if(i>=500000)
{
i=1;
while(ADC_GetSingleFlagStatus(ADC0, ADC_E1CNVF) == DRV_UnHappened);
ADC_ClearFlag(ADC0, ADC_E1CNVF);
x=((ADC_GetDAT0Data(ADC0)*5)/4096.0); //This is the Voltage of Verf.
printf("%lfn",x);
}
}
}

搜索历史

【M0】 MG32F02A 学习笔记⑯ PWM触发ADC

相关推荐

精选推荐

最新话题

热门话题

创建小组步骤

站长推荐 /6