| 1 | #include "typedefs.h"
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| 2 | #include "application.h" // <-- global Registers
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| 3 |
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| 4 | #include "spi_master.h"
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| 5 | #include "timer.h"
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| 6 | #include "atmega_adc.h"
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| 7 | #include "ad7719_adc.h"
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| 8 | #include "w5100_spi_interface.h"
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| 9 |
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| 10 | #include "macros.h"
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| 11 | #include "muxer_fsc.h"
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| 12 |
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| 13 | #include <avr/interrupt.h>
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| 14 | #include <avr/wdt.h>
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| 15 | #include <stdlib.h>
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| 16 |
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| 17 |
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| 18 | int main(void)
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| 19 | {
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| 20 | U08 highbyte;
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| 21 | U08 lowbyte;
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| 22 | U16 eth_red_bytes;
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| 23 | U08 rc;
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| 24 |
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| 25 | gReg.ad7719_measured_all = false;
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| 26 | gReg.adc_measured_all = false;
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| 27 | for ( U08 i=0; i < (RESISTANCE_REGS); ++i ) {
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| 28 | gReg.ad7719_enables[i]=0xFF;
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| 29 | gReg.ad7719_channels_ready[i]=0x00;
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| 30 | }
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| 31 | for ( U08 i=0; i < (VOLTAGE_REGS); ++i ) {
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| 32 | if (i < (VOLTAGE_REGS)-1) {
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| 33 | gReg.adc_enables[i]=0xFF;
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| 34 | }
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| 35 | else {
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| 36 | gReg.adc_enables[i]=0x0F;
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| 37 | }
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| 38 | gReg.adc_channels_ready[i]=0;
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| 39 | }
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| 40 |
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| 41 |
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| 42 | app_init(); // Setup: Watchdog and I/Os
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| 43 | spi_init(); // Initialize SPI interface as master
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| 44 | timer_init(); // set up TIMER2: TIMER2_COMP interrupt occurs every 1ms
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| 45 | atmega_adc_init();
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| 46 |
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| 47 | w5100_reset();
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| 48 | w5100_init();
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| 49 |
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| 50 | ad7719_init();
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| 51 | sei();
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| 52 |
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| 53 | //MAIN LOOP
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| 54 | while (1)
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| 55 | {
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| 56 | // checks if socket is okay and resets in case of problem the W5100
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| 57 | rc=w5100_caretaker();
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| 58 | if ( rc != SR_SOCK_ESTABLISHED && rc != SR_SOCK_LISTEN)
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| 59 | {
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| 60 | // something is not okay with the ethernet ...
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| 61 | // will be reset in the next revolution.. but maybe we want to do more...
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| 62 | }
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| 63 | // this if should check every 25ms if we have any data on the W5100
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| 64 | if ( (gVolReg.time_ms % W5100_INPUT_CHECK_TIME == 0) && (w5100_ready) ) {
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| 65 | if ( (eth_red_bytes = get_S0_RX_RSR()) != 0) {
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| 66 | //parse_w5300_incoming( w5100_get_RX(ETH_READ_BUFFER_SIZE, true) );
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| 67 | }
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| 68 | }
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| 69 | //----------------------------------------------------------------------------
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| 70 | if (check_if_measured_all()) {
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| 71 | write_status_via_eth();
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| 72 | reset_resistance_done();
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| 73 | reset_voltage_done();
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| 74 | reset_voltage_values();
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| 75 | }
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| 76 |
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| 77 | //IF ATmega internal ADC did finish a conversion --every 200us
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| 78 | if ( (ADCSRA & (1<<ADIF)) && !gReg.adc_measured_all) {
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| 79 | lowbyte = ADCL;
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| 80 | highbyte = ADCH;
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| 81 | ADCSRA |= 1<<ADIF;
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| 82 | gReg.adc_current_reading = ((U16)highbyte<<8) | ((U16)lowbyte);
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| 83 | if (gReg.adc_readings_since_last_muxing == ADC_READINGS_UNTIL_SETTLED + ADC_READINGS_UNTIL_MEAN - 1) {
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| 84 | gReg.adc_values[gReg.adc_current_channel] += gReg.adc_current_reading;
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| 85 | gReg.adc_channels_ready[gReg.adc_current_channel/8] |= (1<<(gReg.adc_current_channel%8));
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| 86 | gReg.adc_current_channel = increase_adc(gReg.adc_current_channel);
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| 87 | Set_V_Muxer(gReg.adc_current_channel);
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| 88 | gReg.adc_readings_since_last_muxing = 0;
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| 89 | _delay_ms(10); // this is a muxer delay
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| 90 | }
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| 91 | else if (gReg.adc_readings_since_last_muxing >= ADC_READINGS_UNTIL_SETTLED-1) {
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| 92 | gReg.adc_values[gReg.adc_current_channel] += gReg.adc_current_reading;
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| 93 | ++gReg.adc_readings_since_last_muxing;
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| 94 | }
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| 95 | else {
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| 96 | ++gReg.adc_readings_since_last_muxing;
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| 97 | }
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| 98 | }
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| 99 | //----------------------------------------------------------------------------
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| 100 |
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| 101 | //IF AD7719 ADC just finished a conversion -- every 60ms
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| 102 | if (AD7719_IS_READY() && !gReg.ad7719_measured_all) {
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| 103 | gReg.ad7719_current_reading = read_adc(); // --takes at 4MHz SCLK speed about 6us
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| 104 | // AD7719 is only read out if settled. saves time.
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| 105 | if (gReg.ad7719_readings_since_last_muxing == AD7719_READINGS_UNTIL_SETTLED-1) {
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| 106 | gReg.ad7719_values[gReg.ad7719_current_channel] = gReg.ad7719_current_reading;
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| 107 | gReg.ad7719_readings_since_last_muxing=0;
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| 108 | // now prepare the data to be send away via USART.
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| 109 | // note that this channel is ready, now and
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| 110 | // proceed to the next enabled channel.
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| 111 | gReg.ad7719_channels_ready[gReg.ad7719_current_channel/8] |= (1<<(gReg.ad7719_current_channel%8));
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| 112 | gReg.ad7719_current_channel = increase_ad7719(gReg.ad7719_current_channel);
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| 113 | Set_T_Muxer(gReg.ad7719_current_channel);
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| 114 | }
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| 115 | else { // the AD7719 did not settle yet, we discard the reading
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| 116 | ++gReg.ad7719_readings_since_last_muxing;
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| 117 | }
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| 118 | }
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| 119 |
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| 120 | } // end of main while loop
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| 121 | } // end of main function
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