Rev 855 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 75 | chrv | 1 | #include <avr/io.h> |
| 854 | lvd | 2 | #include <avr/interrupt.h> |
| 75 | chrv | 3 | #include <util/delay.h> |
| 4 | |||
| 5 | #include "pins.h" |
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| 6 | #include "mytypes.h" |
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| 7 | |||
| 219 | chrv | 8 | #include "main.h" |
| 75 | chrv | 9 | #include "atx.h" |
| 10 | #include "rs232.h" |
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| 163 | chrv | 11 | #include "zx.h" |
| 75 | chrv | 12 | |
| 179 | chrv | 13 | //if want Log than comment next string |
| 14 | #undef LOGENABLE |
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| 15 | |||
| 75 | chrv | 16 | volatile UWORD atx_counter; |
| 17 | |||
| 18 | void wait_for_atx_power(void) |
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| 19 | { |
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| 20 | UBYTE j = MCUCSR; |
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| 21 | |||
| 22 | //clear status register |
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| 23 | MCUCSR = 0; |
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| 24 | |||
| 25 | #ifdef LOGENABLE |
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| 26 | char log_ps2keyboard_parse[] = "MC..\r\n"; |
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| 27 | log_ps2keyboard_parse[2] = ((j >> 4) <= 9 )?'0'+(j >> 4):'A'+(j >> 4)-10; |
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| 28 | log_ps2keyboard_parse[3] = ((j & 0x0F) <= 9 )?'0'+(j & 0x0F):'A'+(j & 0x0F)-10; |
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| 29 | to_log(log_ps2keyboard_parse); |
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| 30 | #endif |
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| 31 | |||
| 32 | //check power |
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| 33 | if ( (nCONFIG_PIN & (1<<nCONFIG)) == 0 ) |
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| 34 | { |
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| 861 | lvd | 35 | // only after poweron reset we should wait for soft reset button before powering on |
| 36 | if( !(j & ((1<<JTRF)|(1<<WDRF)|(1<<BORF)|(1<<EXTRF))) || (j & (1<<PORF)) ) |
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| 37 | { |
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| 38 | // have at least 2 sec pause before turning on, as this hopefully gives enough time |
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| 39 | // for FPGA voltages to drop and it will powerup cleanly without compromising the firmware |
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| 40 | UBYTE soft_rst_pressed = 0; |
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| 41 | UBYTE i = PRE_PWRON_WAIT; |
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| 75 | chrv | 42 | |
| 861 | lvd | 43 | do |
| 44 | { |
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| 45 | // blink power LED |
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| 46 | if( i&7 ) |
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| 47 | LED_PORT |= (1<<LED); |
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| 48 | else |
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| 49 | LED_PORT &= ~(1<<LED); |
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| 50 | |||
| 51 | _delay_ms(20); |
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| 52 | |||
| 53 | // if soft reset was pressed during wait, remember it and go poweron immediately after the wait ends |
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| 54 | soft_rst_pressed |= !(SOFTRES_PIN & (1<<SOFTRES)); |
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| 55 | |||
| 56 | } while(--i); |
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| 57 | |||
| 58 | // wait further for soft reset press |
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| 59 | if( !soft_rst_pressed ) while( SOFTRES_PIN&(1<<SOFTRES) ); |
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| 60 | } |
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| 61 | |||
| 855 | lvd | 62 | //switch on ATX power (PF3 pin in PORTF) |
| 75 | chrv | 63 | ATXPWRON_PORT |= (1<<ATXPWRON); |
| 64 | |||
| 65 | //1 sec delay |
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| 855 | lvd | 66 | UBYTE i=50; |
| 67 | do {_delay_ms(20);} while(--i); |
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| 75 | chrv | 68 | } |
| 69 | |||
| 70 | //clear counter |
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| 71 | atx_counter = 0; |
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| 72 | } |
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| 73 | |||
| 219 | chrv | 74 | void atx_power_task(void) |
| 75 | chrv | 75 | { |
| 854 | lvd | 76 | UBYTE i; |
| 77 | |||
| 163 | chrv | 78 | static UWORD last_count = 0; |
| 75 | chrv | 79 | |
| 854 | lvd | 80 | if ( atx_counter > PWROFF_KEY_TIME ) |
| 75 | chrv | 81 | { |
| 852 | lvd | 82 | //here if either SOFTRES_PIN or F12 held for more than ~5 seconds |
| 83 | |||
| 84 | |||
| 854 | lvd | 85 | |
| 86 | // no more need in executing mainloop and servicing interrupts |
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| 87 | cli(); |
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| 88 | |||
| 852 | lvd | 89 | UBYTE was_soft_rst = !(SOFTRES_PIN & (1<<SOFTRES)); |
| 90 | |||
| 91 | // switch off ATX power |
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| 92 | ATXPWRON_PORT &= ~(1<<ATXPWRON); |
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| 93 | |||
| 854 | lvd | 94 | // wait for ATX power to actually drop -- for no more than 2 second. |
| 95 | // if the wait would be infinite, hang will result on non-ATX power supplies |
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| 96 | i=PWROFF_WAIT; |
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| 97 | do |
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| 98 | { |
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| 99 | if( !(nCONFIG_PIN & (1<<nCONFIG)) ) break; |
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| 100 | _delay_ms(20); |
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| 101 | } while( --i ); |
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| 852 | lvd | 102 | |
| 854 | lvd | 103 | |
| 852 | lvd | 104 | // if it was soft reset switch initiated -- wait for it to release |
| 105 | if( was_soft_rst ) |
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| 229 | lvd | 106 | { |
| 852 | lvd | 107 | while( !(SOFTRES_PIN & (1<<SOFTRES)) ); |
| 240 | chrv | 108 | |
| 854 | lvd | 109 | i=SOFT_RST_DEBOUNCE; // and then debounce it |
| 110 | do _delay_ms(20); while(--i); |
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| 240 | chrv | 111 | } |
| 852 | lvd | 112 | |
| 113 | //power led off (timer output disconnect from led pin) |
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| 114 | TCCR2 &= ~((1<<COM20)|(1<<COM21)); |
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| 115 | |||
| 116 | // signal HARD_RESET to exit out of mainloop in main.c -- and eventually return to wait_for_atx_power() |
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| 117 | flags_register |= FLAG_HARD_RESET; |
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| 75 | chrv | 118 | } |
| 852 | lvd | 119 | else if ( ( last_count > 0 ) && ( atx_counter == 0 ) ) |
| 163 | chrv | 120 | { |
| 852 | lvd | 121 | //soft reset (reset Z80 only) -- F12 or softreset pressed for less than 1700 ticks |
| 163 | chrv | 122 | zx_spi_send(SPI_RST_REG, 0, 0x7F); |
| 123 | } |
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| 124 | last_count = atx_counter; |
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| 125 | |||
| 75 | chrv | 126 | |
| 127 | } |