David Rimer / Mbed OS Gigatron_Emulator

A small emulator for the gigatron created for the STM32F746G-DISCO and an NES wii controller

main.cpp@0:72d8735c099e, 2020-03-05 (annotated)

Committer:
davidr99
Date:
Thu Mar 05 01:07:01 2020 +0000
Revision:
0:72d8735c099e
Code for the gigatron emulator

Who changed what in which revision?

UserRevisionLine numberNew contents of line
davidr99 0:72d8735c099e 1 #include "mbed.h"
davidr99 0:72d8735c099e 2 #include "stm32746g_discovery_lcd.h"
davidr99 0:72d8735c099e 3 //#include "stm32746g_discovery_ts.h"
davidr99 0:72d8735c099e 4 #include "GigatronCPU.h"
davidr99 0:72d8735c099e 5 #include "I2CConfig.h"
davidr99 0:72d8735c099e 6 #include "WiiClassicControllerReader.h"
davidr99 0:72d8735c099e 7
davidr99 0:72d8735c099e 8
davidr99 0:72d8735c099e 9 Serial serial(USBTX, USBRX);
davidr99 0:72d8735c099e 10
davidr99 0:72d8735c099e 11 #define BUTTON_A 0x80
davidr99 0:72d8735c099e 12 #define BUTTON_B 0x40
davidr99 0:72d8735c099e 13 #define BUTTON_SELECT 0x20
davidr99 0:72d8735c099e 14 #define BUTTON_START 0x10
davidr99 0:72d8735c099e 15 #define BUTTON_UP 0x08
davidr99 0:72d8735c099e 16 #define BUTTON_DOWN 0x04
davidr99 0:72d8735c099e 17 #define BUTTON_LEFT 0x02
davidr99 0:72d8735c099e 18 #define BUTTON_RIGHT 0x01
davidr99 0:72d8735c099e 19
davidr99 0:72d8735c099e 20 #define HZ 6250000
davidr99 0:72d8735c099e 21
davidr99 0:72d8735c099e 22 GigatronCPU * cpu;
davidr99 0:72d8735c099e 23 CPUStates cpuState;
davidr99 0:72d8735c099e 24 VGA vga;
davidr99 0:72d8735c099e 25 bool vSync = false;
davidr99 0:72d8735c099e 26 uint32_t cycles = 0;
davidr99 0:72d8735c099e 27 bool justStarted = true;
davidr99 0:72d8735c099e 28 int ledStatus = 0;
davidr99 0:72d8735c099e 29
davidr99 0:72d8735c099e 30 extern const uint8_t rom_map[];
davidr99 0:72d8735c099e 31
davidr99 0:72d8735c099e 32 /*
davidr99 0:72d8735c099e 33 void ReadAndReport(WiiClassicControllerReader* const ctrlr, const char* const portname)
davidr99 0:72d8735c099e 34 {
davidr99 0:72d8735c099e 35 int bufSize = 0;
davidr99 0:72d8735c099e 36 char* bufPtr = NULL;
davidr99 0:72d8735c099e 37 bool debug = true;
davidr99 0:72d8735c099e 38
davidr99 0:72d8735c099e 39 ctrlr->RequestRead();
davidr99 0:72d8735c099e 40 serial.printf("%s: ", portname);
davidr99 0:72d8735c099e 41
davidr99 0:72d8735c099e 42 if (debug)
davidr99 0:72d8735c099e 43 {
davidr99 0:72d8735c099e 44 bufSize = ctrlr->getBufferSize();
davidr99 0:72d8735c099e 45 bufPtr = ctrlr->getReadBuf();
davidr99 0:72d8735c099e 46 if (bufPtr != NULL)
davidr99 0:72d8735c099e 47 {
davidr99 0:72d8735c099e 48 for (int i = 0; i < bufSize; i++)
davidr99 0:72d8735c099e 49 {
davidr99 0:72d8735c099e 50 serial.printf("%x ", bufPtr[i]);
davidr99 0:72d8735c099e 51 }
davidr99 0:72d8735c099e 52 serial.printf("\r\n");
davidr99 0:72d8735c099e 53 }
davidr99 0:72d8735c099e 54 }
davidr99 0:72d8735c099e 55 serial.printf("\r\nA\tB\tX\tY\tZL\tZR\tDU\tDD\tDL\tDR\tH\r\n");
davidr99 0:72d8735c099e 56 serial.printf("%d\t", ctrlr->getButtonA());
davidr99 0:72d8735c099e 57 serial.printf("%d\t", ctrlr->getButtonB());
davidr99 0:72d8735c099e 58 serial.printf("%d\t", ctrlr->getButtonX());
davidr99 0:72d8735c099e 59 serial.printf("%d\t", ctrlr->getButtonY());
davidr99 0:72d8735c099e 60 serial.printf("%d\t", ctrlr->getButtonZL());
davidr99 0:72d8735c099e 61 serial.printf("%d\t", ctrlr->getButtonZR());
davidr99 0:72d8735c099e 62 serial.printf("%d\t", ctrlr->getButtonDU());
davidr99 0:72d8735c099e 63 serial.printf("%d\t", ctrlr->getButtonDD());
davidr99 0:72d8735c099e 64 serial.printf("%d\t", ctrlr->getButtonDL());
davidr99 0:72d8735c099e 65 serial.printf("%d\t", ctrlr->getButtonDR());
davidr99 0:72d8735c099e 66 serial.printf("%d\t", ctrlr->getButtonHOME());
davidr99 0:72d8735c099e 67 serial.printf("\r\nSEL\tSTART\tLT\tLC\tRT\tRC\tLX\tLY\tRX\tRY\r\n");
davidr99 0:72d8735c099e 68 serial.printf("%d\t", ctrlr->getButtonSELECT());
davidr99 0:72d8735c099e 69 serial.printf("%d\t", ctrlr->getButtonSTART());
davidr99 0:72d8735c099e 70 serial.printf("%d\t", ctrlr->getButtonLT());
davidr99 0:72d8735c099e 71 serial.printf("%d\t", ctrlr->getButtonLC());
davidr99 0:72d8735c099e 72 serial.printf("%d\t", ctrlr->getButtonRT());
davidr99 0:72d8735c099e 73 serial.printf("%d\t", ctrlr->getButtonRC());
davidr99 0:72d8735c099e 74 serial.printf("%d\t", ctrlr->getLJoyX());
davidr99 0:72d8735c099e 75 serial.printf("%d\t", ctrlr->getLJoyY());
davidr99 0:72d8735c099e 76 serial.printf("%d\t", ctrlr->getRJoyX());
davidr99 0:72d8735c099e 77 serial.printf("%d\t", ctrlr->getRJoyY());
davidr99 0:72d8735c099e 78 serial.printf("\r\n\n\n");
davidr99 0:72d8735c099e 79 }
davidr99 0:72d8735c099e 80 */
davidr99 0:72d8735c099e 81
davidr99 0:72d8735c099e 82 int main()
davidr99 0:72d8735c099e 83 {
davidr99 0:72d8735c099e 84 WiiClassicControllerReader ctrlrA(I2CPort_A::SDA, I2CPort_A::SCL);
davidr99 0:72d8735c099e 85 //I2C test(PB_9, PB_8);
davidr99 0:72d8735c099e 86
davidr99 0:72d8735c099e 87 /*
davidr99 0:72d8735c099e 88 while (true)
davidr99 0:72d8735c099e 89 {
davidr99 0:72d8735c099e 90 ReadAndReport(&ctrlrA, "PORT A");
davidr99 0:72d8735c099e 91 wait(1);
davidr99 0:72d8735c099e 92 }*/
davidr99 0:72d8735c099e 93
davidr99 0:72d8735c099e 94
davidr99 0:72d8735c099e 95 ctrlrA.RequestRead();
davidr99 0:72d8735c099e 96 BSP_LCD_Init();
davidr99 0:72d8735c099e 97 BSP_LCD_LayerDefaultInit(LTDC_ACTIVE_LAYER, LCD_FB_START_ADDRESS);
davidr99 0:72d8735c099e 98 //BSP_LCD_LayerRgb565Init(1, 0xC0100000); //0xC007F800 - End of Page 1
davidr99 0:72d8735c099e 99 BSP_LCD_SelectLayer(LTDC_ACTIVE_LAYER);
davidr99 0:72d8735c099e 100 //BSP_LCD_SelectLayer(1);
davidr99 0:72d8735c099e 101
davidr99 0:72d8735c099e 102 BSP_LCD_SetFont(&Font12);
davidr99 0:72d8735c099e 103 BSP_LCD_SetBackColor(LCD_COLOR_BLUE);
davidr99 0:72d8735c099e 104 BSP_LCD_SetTextColor(LCD_COLOR_WHITE);
davidr99 0:72d8735c099e 105
davidr99 0:72d8735c099e 106 BSP_LCD_Clear(LCD_COLOR_BLACK);
davidr99 0:72d8735c099e 107
davidr99 0:72d8735c099e 108 cpu = new GigatronCPU();
davidr99 0:72d8735c099e 109 cpuState.Current = new CPUState;
davidr99 0:72d8735c099e 110 cpuState.New = new CPUState;
davidr99 0:72d8735c099e 111
davidr99 0:72d8735c099e 112 cpu->SetCPURom((uint8_t *) &rom_map);
davidr99 0:72d8735c099e 113
davidr99 0:72d8735c099e 114 while(1) {
davidr99 0:72d8735c099e 115 cpuState = cpu->CpuCycle(cpuState);
davidr99 0:72d8735c099e 116 cycles++;
davidr99 0:72d8735c099e 117
davidr99 0:72d8735c099e 118 vga.ClockCycle(cpuState.New->OUT);
davidr99 0:72d8735c099e 119
davidr99 0:72d8735c099e 120
davidr99 0:72d8735c099e 121 if ((cycles % ((HZ / 100) + 100)) == 0 && !justStarted)
davidr99 0:72d8735c099e 122 {
davidr99 0:72d8735c099e 123 int buttons = 0x00;
davidr99 0:72d8735c099e 124
davidr99 0:72d8735c099e 125 ctrlrA.ControllerReadCmd();
davidr99 0:72d8735c099e 126 //ctrlrA.RequestRead();
davidr99 0:72d8735c099e 127 ctrlrA.ControllerDecode();
davidr99 0:72d8735c099e 128
davidr99 0:72d8735c099e 129 if (ctrlrA.getButtonA() == 0)
davidr99 0:72d8735c099e 130 {
davidr99 0:72d8735c099e 131 buttons |= BUTTON_A;
davidr99 0:72d8735c099e 132 //serial.printf("A ");
davidr99 0:72d8735c099e 133 }
davidr99 0:72d8735c099e 134
davidr99 0:72d8735c099e 135 if (ctrlrA.getButtonB() == 0)
davidr99 0:72d8735c099e 136 {
davidr99 0:72d8735c099e 137 buttons |= BUTTON_B;
davidr99 0:72d8735c099e 138 //serial.printf("B ");
davidr99 0:72d8735c099e 139 }
davidr99 0:72d8735c099e 140
davidr99 0:72d8735c099e 141 if (ctrlrA.getButtonDD() == 0)
davidr99 0:72d8735c099e 142 {
davidr99 0:72d8735c099e 143 buttons |= BUTTON_DOWN;
davidr99 0:72d8735c099e 144 //serial.printf("D ");
davidr99 0:72d8735c099e 145 }
davidr99 0:72d8735c099e 146
davidr99 0:72d8735c099e 147 if (ctrlrA.getButtonDU() == 0)
davidr99 0:72d8735c099e 148 {
davidr99 0:72d8735c099e 149 buttons |= BUTTON_UP;
davidr99 0:72d8735c099e 150 //serial.printf("U ");
davidr99 0:72d8735c099e 151 }
davidr99 0:72d8735c099e 152
davidr99 0:72d8735c099e 153 if (ctrlrA.getButtonDL() == 0)
davidr99 0:72d8735c099e 154 {
davidr99 0:72d8735c099e 155 buttons |= BUTTON_LEFT;
davidr99 0:72d8735c099e 156 //serial.printf("U ");
davidr99 0:72d8735c099e 157 }
davidr99 0:72d8735c099e 158
davidr99 0:72d8735c099e 159 if (ctrlrA.getButtonDR() == 0)
davidr99 0:72d8735c099e 160 {
davidr99 0:72d8735c099e 161 buttons |= BUTTON_RIGHT;
davidr99 0:72d8735c099e 162 //serial.printf("U ");
davidr99 0:72d8735c099e 163 }
davidr99 0:72d8735c099e 164
davidr99 0:72d8735c099e 165 if (ctrlrA.getButtonSTART() == 0)
davidr99 0:72d8735c099e 166 {
davidr99 0:72d8735c099e 167 buttons |= BUTTON_START;
davidr99 0:72d8735c099e 168 //serial.printf("U ");
davidr99 0:72d8735c099e 169 }
davidr99 0:72d8735c099e 170
davidr99 0:72d8735c099e 171 if (ctrlrA.getButtonSELECT() == 0)
davidr99 0:72d8735c099e 172 {
davidr99 0:72d8735c099e 173 buttons |= BUTTON_SELECT;
davidr99 0:72d8735c099e 174 //serial.printf("U ");
davidr99 0:72d8735c099e 175 }
davidr99 0:72d8735c099e 176
davidr99 0:72d8735c099e 177 // Active Low
davidr99 0:72d8735c099e 178 cpuState.New->IN = buttons ^ 0xFF;
davidr99 0:72d8735c099e 179 }
davidr99 0:72d8735c099e 180 else if ((cycles % (HZ / 100)) == 0)
davidr99 0:72d8735c099e 181 {
davidr99 0:72d8735c099e 182 ctrlrA.ControllerWriteCmd();
davidr99 0:72d8735c099e 183 }
davidr99 0:72d8735c099e 184 /*
davidr99 0:72d8735c099e 185 else if ((cycles % (HZ / 100)) == 0)
davidr99 0:72d8735c099e 186 {
davidr99 0:72d8735c099e 187 if (serial.readable() == 1)
davidr99 0:72d8735c099e 188 {
davidr99 0:72d8735c099e 189 char c = serial.getc();
davidr99 0:72d8735c099e 190
davidr99 0:72d8735c099e 191 serial.printf("%c", c);
davidr99 0:72d8735c099e 192
davidr99 0:72d8735c099e 193 switch(c)
davidr99 0:72d8735c099e 194 {
davidr99 0:72d8735c099e 195 case 13:
davidr99 0:72d8735c099e 196 c = 10;
davidr99 0:72d8735c099e 197 break;
davidr99 0:72d8735c099e 198 }
davidr99 0:72d8735c099e 199
davidr99 0:72d8735c099e 200 cpuState.New->IN = c;
davidr99 0:72d8735c099e 201 }
davidr99 0:72d8735c099e 202 }
davidr99 0:72d8735c099e 203 */
davidr99 0:72d8735c099e 204
davidr99 0:72d8735c099e 205 justStarted = false;
davidr99 0:72d8735c099e 206 }
davidr99 0:72d8735c099e 207 }