1 

15 #include <avr/io.h>

16 #include <stdio.h>

17 #include <stdint.h>

18 #include <avr/pgmspace.h>

19 #include <stddef.h>

20 

21 #include "adc.h"

22 

23 uint16_t V_CHG_1_mess = 0, I_CHG_1_mess = 0, V_CHG_2_mess = 0, I_CHG_2_mess = 0, V_BAT_mess = 0, I_BAT_mess = 0;

24 int16_t I_CHG_1 = 0, I_CHG_2 = 0, I_BAT = 0;

25 float V_CHG_1 = 0, V_CHG_2 = 0, V_BAT = 0, CHARGE_1 = 0, CHARGE_2 = 0, CHARGE_BAT = 0;

26 

36 void ADCA_init ( void )

37 {

38  ADCA.CTRLB = ADC_RESOLUTION_12BIT_gc; // By default, bit4 is cleared and the ADC is configured for unsigned mode.

39  // ADC_RESOLUTION_12BIT_gc ist 12bit, right adjusted

40  ADCA.REFCTRL = ADC_REFSEL_INTVCC_gc | ADC_BANDGAP_bm;

41  ADCA.PRESCALER = ADC_PRESCALER_DIV256_gc; // mit Prescaler 256 und F_CPU von 32 MHz ergibt sich eine Samplerate von 125kSPS (max 2 MSPS)

42  ADCA.CTRLA = ADC_ENABLE_bm;

43 

44  PORTA.DIR = 0x00; // Port A als Eingang, Spannungsmessung

45 

46  ADCA_Cal();

47 }

48 

55 void I_sgn_init ( void )

56 {

57  PORTB.DIRCLR = PIN0_bm | PIN1_bm | PIN2_bm; // Messeingänge das Vorzeichen der Ströme beim Laden und Betrieb.

58 }

59 

66 uint16_t ADCA_Conversion ( ADC_CH_t *Channel, char Pin )

67 {

68  Channel->CTRL = ADC_CH_INPUTMODE_SINGLEENDED_gc;

69  Channel->MUXCTRL = (Pin << 3);

70  Channel->CTRL |= ADC_CH_START_bm;

71 

72  while ( !Channel->INTFLAGS )

73  ;

74  Channel->INTFLAGS = ADC_CH_CHIF_bm; // INTFLAGS löschen

75  return Channel->RES;

76 }

77 

78 

84 void ADCA_Cal ( void )

85 {

86  ADCA.CALL = LeseKalibrationsbyte ( offsetof ( NVM_PROD_SIGNATURES_t, ADCACAL0 ) );

87  ADCA.CALH = LeseKalibrationsbyte ( offsetof ( NVM_PROD_SIGNATURES_t, ADCACAL1 ) );

88 }

89 

93 int LeseKalibrationsbyte ( int Index )

94 {

95  int result;

96 

97  NVM_CMD = NVM_CMD_READ_CALIB_ROW_gc;

98  result = pgm_read_byte ( Index );

99  NVM_CMD = NVM_CMD_NO_OPERATION_gc;

100  return (result);

101 }