char sampleADC(void)
{
char res = 0x0;
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, ENABLE);
ADC_DeInit(ADC1);
ADC_VrefintCmd(ENABLE);
delay_10us(3);
ADC_Cmd(ADC1, ENABLE);
ADC_Init(ADC1, ADC_ConversionMode_Single,
ADC_Resolution_6Bit, ADC_Prescaler_1);
ADC_SamplingTimeConfig(ADC1, ADC_Group_SlowChannels, ADC_SamplingTime_9Cycles);
ADC_ChannelCmd(ADC1, ADC_Channel_0, ENABLE);
delay_10us(3);
ADC_SoftwareStartConv(ADC1);
while( ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0);
res = (char)ADC_GetConversionValue(ADC1);
ADC_VrefintCmd(DISABLE);
ADC_DeInit(ADC1);
/* disable SchmittTrigger for ADC_Channel_24, to save power */
//ADC_SchmittTriggerConfig(ADC1, ADC_Channel_24, DISABLE);
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, DISABLE);
ADC_ChannelCmd(ADC1, ADC_Channel_0, DISABLE);
return res;
}
/**
* @brief Read ADC1
* @caller several functions
* @param None
* @retval ADC value
*/
u16 ADC_Supply(void)
{
uint8_t i;
uint16_t res;
/* Enable ADC clock */
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, ENABLE);
/* de-initialize ADC */
ADC_DeInit(ADC1);
/*ADC configuration
ADC configured as follow:
- Channel VREF
- Mode = Single ConversionMode(ContinuousConvMode disabled)
- Resolution = 12Bit
- Prescaler = /1
- sampling time 9 */
ADC_VrefintCmd(ENABLE);
delay_10us(3);
ADC_Cmd(ADC1, ENABLE);
ADC_Init(ADC1, ADC_ConversionMode_Single,
ADC_Resolution_12Bit, ADC_Prescaler_1);
ADC_SamplingTimeConfig(ADC1, ADC_Group_FastChannels, ADC_SamplingTime_9Cycles);
ADC_ChannelCmd(ADC1, ADC_Channel_Vrefint, ENABLE);
delay_10us(3);
/* initialize result */
res = 0;
for(i=8; i>0; i--)
{
/* start ADC convertion by software */
ADC_SoftwareStartConv(ADC1);
/* wait until end-of-covertion */
while( ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0 );
/* read ADC convertion result */
res += ADC_GetConversionValue(ADC1);
}
/* de-initialize ADC */
ADC_VrefintCmd(DISABLE);
ADC_DeInit(ADC1);
/* disable SchmittTrigger for ADC_Channel_24, to save power */
ADC_SchmittTriggerConfig(ADC1, ADC_Channel_24, DISABLE);
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, DISABLE);
ADC_ChannelCmd(ADC1, ADC_Channel_Vrefint, DISABLE);
return (res>>3);
}
void adc_init(void)
{
ADC_Init(ADC1,ADC_ConversionMode_Single,ADC_Resolution_12Bit,ADC_Prescaler_1);
ADC_VrefintCmd(ENABLE);
ADC_SamplingTimeConfig(ADC1,ADC_Group_SlowChannels,ADC_SamplingTime_4Cycles);
ADC_ITConfig(ADC1,ADC_IT_EOC,ENABLE);
ADC_Cmd(ADC1,ENABLE);
};
/**
* @brief ADC configuration
* @note
* @retval
*/
void ADC_Cfg(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
ADC_Cmd(ADC1, DISABLE);
ADC_VrefintCmd(ENABLE);
ADC_GetCalibrationFactor(ADC1);//校准
ADC1->CHSELR |= ADC_CHSELR_CHSEL0 | ADC_CHSELR_CHSEL17 ;
ADC1->SMPR |= ADC_SMPR_SMP_0 | ADC_SMPR_SMP_1 | ADC_SMPR_SMP_2;
ADC_Cmd(ADC1, ENABLE);
/* GPIOA Clocks enable */
RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA, ENABLE);
/* GPIOA Configuration: Channel 1, 2, 3 and 4 as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;
GPIO_Init(GPIOA, &GPIO_InitStructure);
}
/**
* @brief ADC1 channel with DMA configuration
* @param None
* @retval None
*/
void ADC1_DMA_Config(void)
{
ADC_InitTypeDef ADC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
/* ADC1 DeInit */
ADC_DeInit(ADC1);
/* GPIOC Periph clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC, ENABLE);
/* ADC1 Periph clock enable */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
/* DMA1 clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 , ENABLE);
/* Configure ADC Channel11 as analog input */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* DMA1 Channel1 Config */
DMA_DeInit(DMA1_Channel1);
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)ADC1_DR_Address;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)RegularConvData_Tab;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 4;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
/* DMA1 Channel1 enable */
DMA_Cmd(DMA1_Channel1, ENABLE);
/* ADC DMA request in circular mode */
ADC_DMARequestModeConfig(ADC1, ADC_DMAMode_Circular);
/* Enable ADC_DMA */
ADC_DMACmd(ADC1, ENABLE);
/* Initialize ADC structure */
ADC_StructInit(&ADC_InitStructure);
/* Configure the ADC1 in continous mode withe a resolutuion equal to 12 bits */
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Backward;
ADC_Init(ADC1, &ADC_InitStructure);
/* Convert the ADC1 Channel 1 with 55.5 Cycles as sampling time */
ADC_ChannelConfig(ADC1, ADC_Channel_11 , ADC_SampleTime_55_5Cycles);
/* Convert the ADC1 temperature sensor with 55.5 Cycles as sampling time */
ADC_ChannelConfig(ADC1, ADC_Channel_TempSensor , ADC_SampleTime_55_5Cycles);
ADC_TempSensorCmd(ENABLE);
/* Convert the ADC1 Vref with 55.5 Cycles as sampling time */
ADC_ChannelConfig(ADC1, ADC_Channel_Vrefint , ADC_SampleTime_55_5Cycles);
ADC_VrefintCmd(ENABLE);
/* Convert the ADC1 Vbat with 55.5 Cycles as sampling time */
ADC_ChannelConfig(ADC1, ADC_Channel_Vbat , ADC_SampleTime_55_5Cycles);
ADC_VbatCmd(ENABLE);
/* ADC Calibration */
ADC_GetCalibrationFactor(ADC1);
/* Enable ADC1 */
ADC_Cmd(ADC1, ENABLE);
/* Wait the ADRDY falg */
while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_ADRDY));
/* ADC1 regular Software Start Conv */
ADC_StartOfConversion(ADC1);
}
void adc_init(void)
{
ADC_InitTypeDef ADC_InitStructure;
{
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = BATTERYPIN ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(BATTERYPORT, &GPIO_InitStructure);
}
RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1 , ENABLE);
{
DMA_InitTypeDef DMA_InitStructure;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)0x40012440;
DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)adcarray;
DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
DMA_InitStructure.DMA_BufferSize = 2;
DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_High;
DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
DMA_Init(DMA1_Channel1, &DMA_InitStructure);
}
ADC_DMARequestModeConfig(ADC1, ADC_DMAMode_Circular);
ADC_DMACmd(ADC1, ENABLE);
ADC_StructInit(&ADC_InitStructure);
ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Backward;
ADC_Init(ADC1, &ADC_InitStructure);
ADC_ChannelConfig(ADC1, ADC_Channel_Vrefint , ADC_SampleTime_239_5Cycles);
ADC_ChannelConfig(ADC1, BATTERY_ADC_CHANNEL , ADC_SampleTime_239_5Cycles);
ADC_VrefintCmd(ENABLE);
ADC_GetCalibrationFactor(ADC1);
ADC_Cmd(ADC1, ENABLE);
ADC_StartOfConversion(ADC1);
DMA_Cmd(DMA1_Channel1, ENABLE);
// reference is measured a 3.3v, we are powered by 2.8, so a 1.17 multiplier
// different vccs will translate to a different adc scale factor,
// so actual vcc is not important as long as the voltage is correct in the end
vref_cal = 1.17857f * (float) ( adcref_read ((adcrefcal *) 0x1FFFF7BA) );
}
/**
* @brief main entry point.
* @par Parameters None
* @retval void None
* @par Required preconditions: None
*/
void main(void)
{
uint8_t PayloadLength,
data_sensor,
*bufMessage;
/* deinit I/O ports */
DeInitClock();
DeInitGPIO();
/* Select HSI as system clock source */
#ifdef USE_HSI
CLK_SYSCLKSourceConfig(CLK_SYSCLKSource_HSI);
CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_16);
#else
CLK_SYSCLKSourceSwitchCmd(ENABLE);
/* Select 2MHz HSE as system clock source */
CLK_SYSCLKSourceConfig(CLK_SYSCLKSource_HSE);
CLK_SYSCLKDivConfig(CLK_SYSCLKDiv_4);
CLK_HSICmd(DISABLE);
#endif
// Initializes the LCD glass
LCD_GLASS_Init();
/* LED button init: GPIO set in push pull */
GPIO_Init( LED_GPIO_PORT, LED_GPIO_PIN, GPIO_Mode_Out_PP_Low_Fast);
// set to 0
GPIOE->ODR &= ~LED_GPIO_PIN;
/* USER button init: GPIO set in input interrupt active mode */
GPIO_Init( BUTTON_GPIO_PORT, USER_GPIO_PIN, GPIO_Mode_In_FL_IT);
EXTI_SetPinSensitivity(EXTI_Pin_7, EXTI_Trigger_Falling);
//* Init Bar on LCD all are OFF
BAR0_OFF;
BAR1_OFF;
BAR2_OFF;
BAR3_OFF;
enableInterrupts();
//* At power on VDD diplays
bufMessage = NDEFmessage;
if (EEMenuState > STATE_TEMPMEAS)
EEMenuState = STATE_CHECKNDEFMESSAGE;
FLASH_Unlock(FLASH_MemType_Data );
state_machine = EEMenuState ;
delayLFO_ms (1);
if (EEInitial == 0)
{
User_WriteFirmwareVersion ();
EEInitial =1;
}
while (1)
{
switch (state_machine)
{
case STATE_VREFF:
// measure the voltage available at the output of the M24LR04E-R
Vref_measure();
delayLFO_ms (2);
//turn on led
GPIO_SetBits(GPIOE, GPIO_Pin_6);
break;
case STATE_VBIO:
//measure the output voltage of biosensor through Pin 7 Port E
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, ENABLE);
ADC_DeInit(ADC1);
ADC_VrefintCmd(ENABLE);
delay_10us(3);
GPIO_DeInit(GPIOE);
GPIO_Init(GPIOE,GPIO_Pin_7 ,/*GPIO_Mode_In_FL_No_IT*/GPIO_Mode_In_PU_No_IT);
ADC_Cmd(ADC1, ENABLE);
ADC_Init(ADC1, ADC_ConversionMode_Single,ADC_Resolution_12Bit, ADC_Prescaler_1);
ADC_SamplingTimeConfig(ADC1, ADC_Group_FastChannels, ADC_SamplingTime_9Cycles);
ADC_ChannelCmd(ADC1, ADC_Channel_3, ENABLE);
delay_10us(3); // Important delay
res = 0;
res_2 = 0;
i=0;
for(i=8; i>0; i--)
{
/* start ADC convertion by software */
ADC_SoftwareStartConv(ADC1);
/* wait until end-of-covertion */
while( ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == 0 );
/* read ADC convertion result */
res += ADC_GetConversionValue(ADC1);
}
/* de-initialize ADC*/
ADC_VrefintCmd(DISABLE);
ADC_DeInit(ADC1);
/* disable SchmittTrigger for ADC_Channel_24, to save power */
ADC_SchmittTriggerConfig(ADC1, ADC_Channel_3, DISABLE);
CLK_PeripheralClockConfig(CLK_Peripheral_ADC1, DISABLE);
ADC_ChannelCmd(ADC1, ADC_Channel_3, DISABLE);
res = res>>3;
P_VREFINT_Factory = VREFINT_Factory_CONV_ADDRESS;
#ifdef VREFINT_FACTORY_CONV
if ((*P_VREFINT_Factory>VREFINT_Factory_CONV_MIN ) && (*P_VREFINT_Factory<VREFINT_Factory_CONV_MAX ))
{
/* If the value exists:
Adds the hight byte to FullVREF_FACTORY */
FullVREF_FACTORY = VREFINT_Factory_CONV_MSB;
FullVREF_FACTORY += *P_VREFINT_Factory;
res_2 = (float)(FullVREF_FACTORY*VDD_FACTORY);
res_2 /= res;
} else {
res_2 = (VREF/res) * ADC_CONV; // usally res>>3
}
#else
/* We use the theorcial value */
res_2 = (VREF/res) * ADC_CONV;
#endif
/* Vdd_appli in mV */
res_2*= 1000L;
convert_into_char (res_2, tab);
/* To add unit and decimal point */
tab[5] = 'V';
tab[4] = ' ';
tab[1] |= DOT; /* To add decimal point for display in volt */
tab[0] = ' ';
LCD_GLASS_DisplayStrDeci(tab);
delayLFO_ms (2);
//LCD_GLASS_DisplayString("V BIO");
break;
case STATE_CHECKNDEFMESSAGE:
// read the NDEF message from the M24LR04E-R EEPROM and display it if it is found
if (User_ReadNDEFMessage (&PayloadLength) == SUCCESS)
User_DisplayMessage (bufMessage,PayloadLength);
// User_DisplayMessageActiveHaltMode (PayloadLength);
else
User_DisplayMessage(ErrorMessage,20);
break;
case STATE_TEMPMEAS:
// read the ambiant tempserature from the STTS751
User_GetOneTemperature (&data_sensor);
// display the temperature
User_DisplayOneTemperature (data_sensor);
delayLFO_ms (2);
break;
break;
/* for safe: normaly never reaches */
default:
LCD_GLASS_Clear();
LCD_GLASS_DisplayString("Error");
state_machine = STATE_VREFF;
break;
}
}
}