1 | void init_port_b ( void )
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2 | {
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3 | ATOMIC_BLOCK( ATOMIC_RESTORESTATE )
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4 | {
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5 | DDRB |= (1<<PB0); // Set line 0 of port B as output
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6 | DDRB |= (1<<PB1); // Set line 1 of port B as output
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7 | DDRB |= (1<<PB2); // Set line 2 of port B as output
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8 | DDRB |= (1<<PB3); // Set line 3 of port B as output
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9 | DDRB |= (1<<PB4); // Set line 4 of port B as output
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10 |
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11 | // Heartbeat LED: Line 0 -> Switch off initially
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12 |
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13 | PORTB &= ~( 1<<PB0 );
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14 |
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15 | asm volatile ( "nop" ); // Give the AVR time to settle
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16 | }
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17 |
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18 | return;
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19 | }
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20 |
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21 | void set_error_led( void )
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22 | {
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23 | PORTB = PINB | (1 << PB0);
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24 | }
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25 |
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26 | void clear_error_led( void )
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27 | {
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28 | PORTB = PINB & ~(1 << PB0);
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29 | }
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30 |
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31 | void dit(void)
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32 | {
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33 | clear_error_led();
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34 | set_error_led();
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35 | _delay_ms( 100 );
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36 | clear_error_led();
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37 | }
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38 |
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39 | void dah( void )
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40 | {
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41 | clear_error_led();
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42 | set_error_led();
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43 | _delay_ms( 250 );
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44 | clear_error_led();
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45 | }
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46 |
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47 | void roger( void )
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48 | {
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49 | dit();
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50 | dah();
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51 | dit();
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52 | }
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53 |
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54 | void init_io_timer ( void )
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55 | {
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56 | ATOMIC_BLOCK( ATOMIC_RESTORESTATE )
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57 | {
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58 | // We use timer 1 (16 bit Timer) in CTC mode. This timer shall
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59 | // generate an interrupt every PSU_IO_UPDATE_INTERVAL seconds.
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60 | // Prescaler has to be set to 1 !
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61 |
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62 | OCR1A = (unsigned short)
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63 | ((unsigned long) F_CPU / PSU_IO_IRQS_PER_SECOND /
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64 | PSU_IO_TIMER_PRESCALE - 1); // Load the timer compare value
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65 |
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66 | TCNT1 = 0; // Reset counter value
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67 | TCCR1A = 0; // No PWM
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68 | TCCR1B = _BV( WGM12 ) | _BV( CS11 ); // Set CTC mode
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69 | TIMSK0 |= _BV( OCIE1A ); // Output Compare A Interrupt
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70 | }
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71 | }
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72 |
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73 | rc_t greet( unsigned long nDelayMilliSeconds )
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74 | {
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75 | rc_t nRC = RC_OK;
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76 |
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77 | // Line 1: Title
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78 | display_format( 1, strcpy_P( (char *) &acBuffer[0], PSTR( "* PSU + DARC *" )));
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79 |
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80 | // Line 2: Model
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81 | display_format( 2, strcpy_P( (char *) &acBuffer[0], PSTR( ">%6s< by DG1SBG" )), PSU_MODEL );
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82 |
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83 | // Line 3 Serial Nr and Version
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84 | display_format( 3, strcpy_P( (char *) &acBuffer[0], PSTR( "# %s - %s")), PSU_SERIAL_NR, PSU_VERSION );
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85 |
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86 | roger();
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87 |
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88 | if( nDelayMilliSeconds > 0 )
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89 | _delay_ms( nDelayMilliSeconds );
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90 |
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91 | return nRC;
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92 | }
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93 |
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94 | ISR( TIMER1_COMPA_vect ) // Routine triggered by Timer 1 to
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95 | { // interact with the user
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96 |
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97 | heart_beat();
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98 |
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99 | update_lamps(); // Update the lamp on/off to match relays
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100 | update_i2c_io(); // Read digital inputs and write relays
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101 |
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102 | // sample_voltages();
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103 |
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104 | debounce(); // Debounce pushbuttons
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105 |
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106 | darc_get_command(); // Read command from DARC channel
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107 | }
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108 |
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109 |
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110 | int main ( void )
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111 | {
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112 | rc_t nRC = RC_OK;
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113 |
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114 | // Status engine: Still outside of it
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115 |
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116 | nCmdFromISR = NO_CMD;
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117 | bInStatusNetEngine = FALSE;
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118 | bPBsEnabled = FALSE;
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119 |
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120 | // Delay 2 seconds for all devices to settle
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121 |
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122 | _delay_ms( 2000 );
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123 |
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124 | // Do basic inits as fast as possible
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125 |
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126 | init();
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127 | execute_cmd_from_isr();
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128 |
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129 | // Display the reason why the controller is booting
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130 |
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131 | analyse_reset_reason( 1000 );
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132 | execute_cmd_from_isr();
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133 | blink_error_led_fast();
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134 |
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135 | // Say hello on LCD
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136 |
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137 | greet( 1000 );
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138 | execute_cmd_from_isr();
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139 |
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140 | // Make error logging in EEPROM possible
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141 |
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142 | show_last_logged_error( 2000 );
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143 | execute_cmd_from_isr();
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144 |
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145 | // Kick off status net - THIS IS THE MAIN LOOP ...
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146 |
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147 | bInStatusNetEngine = TRUE;
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148 |
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149 | clear_display();
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150 |
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151 | switch_status( PSU_STATUS_ID_PSU_BOOTING );
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152 |
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153 | while( nRC == RC_OK )
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154 | {
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155 | nRC = goto_next_status( nNextStatus );
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156 | }
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157 |
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158 | // When this point is reached it most likely means that a reset is
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159 | // required !
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160 |
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161 | if( IS_ERROR( nRC ) )
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162 | log_error( nRC, __LINE__ );
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163 |
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164 | reset(); // Reboot PSU Controller !!!
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165 |
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166 | // This point never reached ...
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167 | return 1;
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168 | }
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