git.zerfleddert.de Git - raggedstone/blob - xps/raggedstone.c

   1 #include "xparameters.h"
   2 #include "xgpio_l.h"
   3
   4 #include "stdio.h"
   5
   6 #include "xutil.h"
   7
   8 #define DISP7(a,b,c,d,e,f,g) (0|((~(a|b<<1|c<<2|d<<3|e<<4|f<<5|g<<6))&0xff))
   9
  10 void display_num(unsigned short num) {
  11         unsigned int val = 0x00;
  12         int i;
  13         unsigned short digit;
  14
  15         XGpio_mSetDataDirection(XPAR_SEVENSEG_BASEADDR, 1, 0x00000000);
  16
  17         for (i=0; i<5; i++) {
  18                 digit = ((num>>(4*i)) & 0xf);
  19                 switch(digit) {
  20                         case 0x0:
  21                                 val = DISP7(1,1,1,1,1,1,0);
  22                                 break;
  23                         case 0x1:
  24                                 val = DISP7(0,1,1,0,0,0,0);
  25                                 break;
  26                         case 0x2:
  27                                 val = DISP7(1,1,0,1,1,0,1);
  28                                 break;
  29                         case 0x3:
  30                                 val = DISP7(1,1,1,1,0,0,1);
  31                                 break;
  32                         case 0x4:
  33                                 val = DISP7(0,1,1,0,0,1,1);
  34                                 break;
  35                         case 0x5:
  36                                 val = DISP7(1,0,1,1,0,1,1);
  37                                 break;
  38                         case 0x6:
  39                                 val = DISP7(1,0,1,1,1,1,1);
  40                                 break;
  41                         case 0x7:
  42                                 val = DISP7(1,1,1,0,0,0,0);
  43                                 break;
  44                         case 0x8:
  45                                 val = DISP7(1,1,1,1,1,1,1);
  46                                 break;
  47                         case 0x9:
  48                                 val = DISP7(1,1,1,1,0,1,1);
  49                                 break;
  50                         case 0xa:
  51                                 val = DISP7(1,1,1,0,1,1,1);
  52                                 break;
  53                         case 0xb:
  54                                 val = DISP7(0,0,1,1,1,1,1);
  55                                 break;
  56                         case 0xc:
  57                                 val = DISP7(1,0,0,1,1,1,0);
  58                                 break;
  59                         case 0xd:
  60                                 val = DISP7(0,1,1,1,1,0,1);
  61                                 break;
  62                         case 0xe:
  63                                 val = DISP7(1,0,0,1,1,1,1);
  64                                 break;
  65                         case 0xf:
  66                                 val = DISP7(1,0,0,0,1,1,1);
  67                                 break;
  68                 }
  69
  70                 val |= 1 << (8+(3-i));
  71
  72                 if (i == 4)
  73                         val = 0x00;
  74
  75                 XGpio_mSetDataReg(XPAR_SEVENSEG_BASEADDR, 1, val);
  76                 if (i != 4)
  77                         for (val = 0; val < 100000; val++);
  78         }
  79 }
  80
  81 void flash_chip_erase() {
  82         volatile unsigned char *flash = (volatile unsigned char*)XPAR_FLASH_MEM0_BASEADDR;
  83
  84         flash[0x555] = 0xAA;
  85         flash[0xAAA] = 0x55;
  86         flash[0x555] = 0x80;
  87         flash[0x555] = 0xAA;
  88         flash[0xAAA] = 0x55;
  89         flash[0x555] = 0x10;
  90 }
  91
  92 void flash_erase_sector(unsigned int addr) {
  93         volatile unsigned char *flash = (volatile unsigned char*)XPAR_FLASH_MEM0_BASEADDR;
  94
  95         flash[0x555] = 0xAA;
  96         flash[0xAAA] = 0x55;
  97         flash[0x555] = 0x80;
  98         flash[0x555] = 0xAA;
  99         flash[0xAAA] = 0x55;
 100         flash[addr] = 0x30;
 101 }
 102
 103 void flash_program_byte(unsigned int addr, unsigned char value) {
 104         volatile unsigned char *flash = (volatile unsigned char*)XPAR_FLASH_MEM0_BASEADDR;
 105         unsigned int count = 0xffffffff;
 106
 107         if (flash[addr] != 0xff)
 108                 return;
 109
 110         flash[0x555] = 0xAA;
 111         flash[0xAAA] = 0x55;
 112         flash[0x555] = 0xA0;
 113         flash[addr] = value;
 114
 115         while (flash[addr] != value && count) { count--; }
 116 }
 117
 118 void flash_identify(int enable) {
 119         volatile unsigned char *flash = (volatile unsigned char*)XPAR_FLASH_MEM0_BASEADDR;
 120
 121         flash[0x555] = 0xAA;
 122         flash[0xAAA] = 0x55;
 123         flash[0x555] = enable?0x90:0xF0;
 124 }
 125
 126 int main (void) {
 127         int i,a;
 128         volatile unsigned char *flash = (volatile unsigned char*)XPAR_FLASH_MEM0_BASEADDR;
 129
 130         XGpio_mSetDataDirection(XPAR_LEDS_BASEADDR, 1, 0x00000000);
 131         XGpio_mSetDataReg(XPAR_LEDS_BASEADDR, 1, 0x00);
 132         print("\r\nHallo Raggedstone!\r\n");
 133         for (i = 0; i < 1500000000; i++);
 134
 135         flash_identify(1);
 136         putnum(flash[0]|flash[1]<<8|flash[2]<<16|flash[3]<<24);
 137         print("\r\n");
 138         flash_identify(0);
 139         putnum(flash[0]|flash[1]<<8|flash[2]<<16|flash[3]<<24);
 140         print("\r\n");
 141
 142         for (i = 0; i < 1500000000; i++);
 143         i = 0;
 144         while(1) {
 145                 print("Hallo Raggedstone ");
 146                 display_num(i>>8);
 147                 putnum(i);
 148                 XGpio_mSetDataReg(XPAR_LEDS_BASEADDR, 1, (i & 0xf00)>>8);
 149                 print("\r\n");
 150                 if (i == 0x7ffff)
 151                         i = 0;
 152                 else
 153                         i++;
 154         }
 155    return 0;
 156 }