v1 Stable
Dependencies: F401RE-USBHost USBHostXpad mbed
main.cpp@8:2479ec34467b, 2016-12-30 (annotated)
- Committer:
- Ownasaurus
- Date:
- Fri Dec 30 19:08:35 2016 +0000
- Revision:
- 8:2479ec34467b
- Parent:
- 7:65d1a7a3948b
- Child:
- 9:b64b08b130ed
Analog fix for negative x and y values
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Ownasaurus | 0:eb2258e8c4b5 | 1 | #include "mbed.h" |
Ownasaurus | 2:c20d8438f206 | 2 | #include "USBHostXpad.h" |
Ownasaurus | 3:52b2a7514406 | 3 | #include "stm32f4xx_flash.h" |
Ownasaurus | 2:c20d8438f206 | 4 | |
Ownasaurus | 2:c20d8438f206 | 5 | DigitalOut myled(LED1); |
Ownasaurus | 2:c20d8438f206 | 6 | Serial pc(USBTX, USBRX); // tx, rx |
Ownasaurus | 2:c20d8438f206 | 7 | DigitalInOut data(PA_8); |
Ownasaurus | 5:32c8b316582a | 8 | DigitalIn button(PC_13); // eventually code to set controls |
Ownasaurus | 2:c20d8438f206 | 9 | |
Ownasaurus | 2:c20d8438f206 | 10 | /** |
Ownasaurus | 2:c20d8438f206 | 11 | @namespace AXYB |
Ownasaurus | 2:c20d8438f206 | 12 | @brief Integer for storing the hex of the A X Y B buttons |
Ownasaurus | 2:c20d8438f206 | 13 | @brief XPad returns a 4 digit hex for all buttons- AXYB buttons are stored in first value |
Ownasaurus | 2:c20d8438f206 | 14 | @param A - given as a 1 |
Ownasaurus | 2:c20d8438f206 | 15 | @param B - given as a 2 |
Ownasaurus | 2:c20d8438f206 | 16 | @param X - given as a 4 |
Ownasaurus | 2:c20d8438f206 | 17 | @param Y - given as a 8 |
Ownasaurus | 2:c20d8438f206 | 18 | */ |
Ownasaurus | 2:c20d8438f206 | 19 | uint8_t AXYB=0x0; |
Ownasaurus | 2:c20d8438f206 | 20 | /** |
Ownasaurus | 2:c20d8438f206 | 21 | @namespace XLBRB |
Ownasaurus | 2:c20d8438f206 | 22 | @brief Integer for storing the hex of the LB,RB and center X buttons |
Ownasaurus | 3:52b2a7514406 | 23 | @brief XPad returns a 4 digit hex for all buttons- XLBRB buttons are stored in second value |
Ownasaurus | 2:c20d8438f206 | 24 | @param LB - given as a 1 |
Ownasaurus | 2:c20d8438f206 | 25 | @param R - given as a 2 |
Ownasaurus | 2:c20d8438f206 | 26 | @param X - given as a 4 |
Ownasaurus | 2:c20d8438f206 | 27 | */ |
Ownasaurus | 2:c20d8438f206 | 28 | uint8_t XLBRB=0x0; |
Ownasaurus | 2:c20d8438f206 | 29 | |
Ownasaurus | 2:c20d8438f206 | 30 | /** |
Ownasaurus | 2:c20d8438f206 | 31 | @namespace bkStrtLCRC |
Ownasaurus | 2:c20d8438f206 | 32 | @brief Integer for storing the hex of the Left analog button,Right analog button,back and start buttons |
Ownasaurus | 3:52b2a7514406 | 33 | @brief XPad returns a 4 digit hex for all buttons- bkStrtLCRC buttons are stored in third value |
Ownasaurus | 2:c20d8438f206 | 34 | @param start - given as a 1 |
Ownasaurus | 2:c20d8438f206 | 35 | @param back - given as a 2 |
Ownasaurus | 2:c20d8438f206 | 36 | @param LC - given as a 4 |
Ownasaurus | 2:c20d8438f206 | 37 | @param RC - given as a 8 |
Ownasaurus | 2:c20d8438f206 | 38 | */ |
Ownasaurus | 2:c20d8438f206 | 39 | uint8_t bkStrtLCRC=0x0; |
Ownasaurus | 2:c20d8438f206 | 40 | /** |
Ownasaurus | 2:c20d8438f206 | 41 | @namespace DPad |
Ownasaurus | 2:c20d8438f206 | 42 | @brief Integer for storing the hex of the Directional buttons |
Ownasaurus | 3:52b2a7514406 | 43 | @brief XPad returns a 4 digit hex for all buttons- DPad buttons are stored in fourth value |
Ownasaurus | 2:c20d8438f206 | 44 | @param Up - given as a 1 |
Ownasaurus | 2:c20d8438f206 | 45 | @param Down - given as a 2 |
Ownasaurus | 2:c20d8438f206 | 46 | @param Left - given as a 4 |
Ownasaurus | 2:c20d8438f206 | 47 | @param Right - given as a 8 |
Ownasaurus | 2:c20d8438f206 | 48 | */ |
Ownasaurus | 2:c20d8438f206 | 49 | uint8_t DPad=0x0; |
Ownasaurus | 2:c20d8438f206 | 50 | /** |
Ownasaurus | 2:c20d8438f206 | 51 | @namespace LSY |
Ownasaurus | 2:c20d8438f206 | 52 | @brief float for storing the value of the Left Analogue Stick's Y axis |
Ownasaurus | 2:c20d8438f206 | 53 | @brief XPad returns a value between -32768(down) and 32767(up) |
Ownasaurus | 2:c20d8438f206 | 54 | @there is a deadzone between around -4000 and 4000 where the value returned is not consistent when in the fixed position(assummed 0,0 point) |
Ownasaurus | 2:c20d8438f206 | 55 | */ |
Ownasaurus | 2:c20d8438f206 | 56 | char LSY=0x0; |
Ownasaurus | 2:c20d8438f206 | 57 | /** |
Ownasaurus | 2:c20d8438f206 | 58 | @namespace LSX |
Ownasaurus | 2:c20d8438f206 | 59 | @brief float for storing the value of the Left Analogue Stick's X axis |
Ownasaurus | 2:c20d8438f206 | 60 | @brief XPad returns a value between -32768(left) and 32767(right) |
Ownasaurus | 2:c20d8438f206 | 61 | @there is a deadzone between around -4000 and 4000 where the value returned is not consistent when in the fixed position(assummed 0,0 point) |
Ownasaurus | 2:c20d8438f206 | 62 | */ |
Ownasaurus | 2:c20d8438f206 | 63 | char LSX=0x0; |
Ownasaurus | 2:c20d8438f206 | 64 | /** |
Ownasaurus | 2:c20d8438f206 | 65 | @namespace RSY |
Ownasaurus | 2:c20d8438f206 | 66 | @brief float for storing the value of the Right Analogue Stick's Y axis |
Ownasaurus | 2:c20d8438f206 | 67 | @brief XPad returns a value between -32768() and 32767(up) |
Ownasaurus | 2:c20d8438f206 | 68 | @there is a deadzone between around -4000 and 4000 where the value returned is not consistent when in the fixed position(assummed 0,0 point) |
Ownasaurus | 2:c20d8438f206 | 69 | */ |
Ownasaurus | 2:c20d8438f206 | 70 | float RSY=0x0; |
Ownasaurus | 2:c20d8438f206 | 71 | /** |
Ownasaurus | 2:c20d8438f206 | 72 | @namespace RSX |
Ownasaurus | 2:c20d8438f206 | 73 | @brief float for storing the value of the Right Analogue Stick's X axis |
Ownasaurus | 2:c20d8438f206 | 74 | @brief XPad returns a value between -32768(left) and 32767(right) |
Ownasaurus | 2:c20d8438f206 | 75 | @there is a deadzone between around -4000 and 4000 where the value returned is not consistent when in the fixed position(assummed 0,0 point) |
Ownasaurus | 2:c20d8438f206 | 76 | */ |
Ownasaurus | 2:c20d8438f206 | 77 | float RSX=0x0; |
Ownasaurus | 2:c20d8438f206 | 78 | /** |
Ownasaurus | 2:c20d8438f206 | 79 | @namespace sN |
Ownasaurus | 2:c20d8438f206 | 80 | @brief float for storing the stick Normalising value |
Ownasaurus | 2:c20d8438f206 | 81 | @brief makes the range of the sticks -80 to 80 |
Ownasaurus | 2:c20d8438f206 | 82 | */ |
Ownasaurus | 2:c20d8438f206 | 83 | const float sN=0.00244140625;//(80/32768) |
Ownasaurus | 2:c20d8438f206 | 84 | /** |
Ownasaurus | 2:c20d8438f206 | 85 | @namespace Lt |
Ownasaurus | 2:c20d8438f206 | 86 | @brief float for storing the value of the Left trigger |
Ownasaurus | 2:c20d8438f206 | 87 | @brief XPad returns a value between 0(not pressed) and 255(fully pressed) |
Ownasaurus | 2:c20d8438f206 | 88 | @ |
Ownasaurus | 2:c20d8438f206 | 89 | */ |
Ownasaurus | 2:c20d8438f206 | 90 | float Lt=0x0; |
Ownasaurus | 2:c20d8438f206 | 91 | /** |
Ownasaurus | 2:c20d8438f206 | 92 | @namespace Rt |
Ownasaurus | 2:c20d8438f206 | 93 | @brief float for storing the value of the Left trigger |
Ownasaurus | 2:c20d8438f206 | 94 | @brief XPad returns a value between 0(not pressed) and 255(fully pressed) |
Ownasaurus | 2:c20d8438f206 | 95 | @ |
Ownasaurus | 2:c20d8438f206 | 96 | */ |
Ownasaurus | 2:c20d8438f206 | 97 | float Rt=0x0; |
Ownasaurus | 2:c20d8438f206 | 98 | /** |
Ownasaurus | 2:c20d8438f206 | 99 | @namespace tN |
Ownasaurus | 2:c20d8438f206 | 100 | @brief float for storing the trigger Normalising value |
Ownasaurus | 2:c20d8438f206 | 101 | @brief makes the range of the triggers 0 to 10 |
Ownasaurus | 2:c20d8438f206 | 102 | */ |
Ownasaurus | 2:c20d8438f206 | 103 | const float tN=0.03921568627;//(10/255) |
Ownasaurus | 6:21365f733399 | 104 | const int dead_zone = 20; |
Ownasaurus | 6:21365f733399 | 105 | const int joy_range = 100; |
Ownasaurus | 6:21365f733399 | 106 | //const int DEADZONE = 5; |
Ownasaurus | 6:21365f733399 | 107 | const int TRIGGER_THRESHOLD = 5; |
Ownasaurus | 2:c20d8438f206 | 108 | |
Ownasaurus | 2:c20d8438f206 | 109 | char reverse(char b) |
Ownasaurus | 2:c20d8438f206 | 110 | { |
Ownasaurus | 2:c20d8438f206 | 111 | b = (b & 0xF0) >> 4 | (b & 0x0F) << 4; |
Ownasaurus | 2:c20d8438f206 | 112 | b = (b & 0xCC) >> 2 | (b & 0x33) << 2; |
Ownasaurus | 2:c20d8438f206 | 113 | b = (b & 0xAA) >> 1 | (b & 0x55) << 1; |
Ownasaurus | 2:c20d8438f206 | 114 | return b; |
Ownasaurus | 2:c20d8438f206 | 115 | } |
Ownasaurus | 0:eb2258e8c4b5 | 116 | |
Ownasaurus | 6:21365f733399 | 117 | enum STATE {NORMAL=0, DPAD_UP, DPAD_DOWN, DPAD_LEFT, DPAD_RIGHT, BUTTON_START, BUTTON_B, BUTTON_A, C_UP, C_DOWN, C_LEFT, C_RIGHT, BUTTON_L, BUTTON_R, BUTTON_Z}; |
Ownasaurus | 6:21365f733399 | 118 | enum XPAD_BUTTON {XPAD_DUP, XPAD_DDOWN, XPAD_DLEFT, XPAD_DRIGHT, XPAD_X, XPAD_Y, XPAD_A, XPAD_B, XPAD_LB, XPAD_RB, XPAD_LT, XPAD_RT, XPAD_BACK, XPAD_START, XPAD_LAB, XPAD_RAB}; |
Ownasaurus | 6:21365f733399 | 119 | |
Ownasaurus | 6:21365f733399 | 120 | uint8_t state = NORMAL; |
Ownasaurus | 6:21365f733399 | 121 | bool XpadButtonPressed = false; |
Ownasaurus | 6:21365f733399 | 122 | |
Ownasaurus | 6:21365f733399 | 123 | const uint64_t A_MASK = 0x00001000, |
Ownasaurus | 6:21365f733399 | 124 | B_MASK = 0x00002000, |
Ownasaurus | 6:21365f733399 | 125 | X_MASK = 0x00004000, |
Ownasaurus | 6:21365f733399 | 126 | Y_MASK = 0x00008000, |
Ownasaurus | 6:21365f733399 | 127 | LB_MASK = 0x00000100, |
Ownasaurus | 6:21365f733399 | 128 | RB_MASK = 0x00000200, |
Ownasaurus | 6:21365f733399 | 129 | START_MASK = 0x00000010, |
Ownasaurus | 6:21365f733399 | 130 | BACK_MASK = 0x00000020, |
Ownasaurus | 6:21365f733399 | 131 | LAB_MASK = 0x00000040, |
Ownasaurus | 6:21365f733399 | 132 | RAB_MASK = 0x00000080, |
Ownasaurus | 6:21365f733399 | 133 | DUP_MASK = 0x00000001, |
Ownasaurus | 6:21365f733399 | 134 | DDOWN_MASK = 0x00000002, |
Ownasaurus | 6:21365f733399 | 135 | DLEFT_MASK = 0x00000004, |
Ownasaurus | 6:21365f733399 | 136 | DRIGHT_MASK = 0x00000008, |
Ownasaurus | 6:21365f733399 | 137 | // the next two masks are special extensions to support triggers |
Ownasaurus | 6:21365f733399 | 138 | LT_MASK = 0x00010000, |
Ownasaurus | 6:21365f733399 | 139 | RT_MASK = 0x00020000; |
Ownasaurus | 6:21365f733399 | 140 | |
Ownasaurus | 0:eb2258e8c4b5 | 141 | extern "C" void my_wait_us_asm (int n); |
Ownasaurus | 6:21365f733399 | 142 | void LoadControls(); |
Ownasaurus | 6:21365f733399 | 143 | void SaveControls(); |
Ownasaurus | 0:eb2258e8c4b5 | 144 | |
Ownasaurus | 5:32c8b316582a | 145 | struct __attribute__((packed)) N64ControllerData // all bits are in the correct order... except for the analog |
Ownasaurus | 1:3c21da72660d | 146 | { |
Ownasaurus | 1:3c21da72660d | 147 | unsigned int a : 1; // 1 bit wide |
Ownasaurus | 1:3c21da72660d | 148 | unsigned int b : 1; |
Ownasaurus | 1:3c21da72660d | 149 | unsigned int z : 1; |
Ownasaurus | 1:3c21da72660d | 150 | unsigned int start : 1; |
Ownasaurus | 1:3c21da72660d | 151 | unsigned int up : 1; |
Ownasaurus | 1:3c21da72660d | 152 | unsigned int down : 1; |
Ownasaurus | 1:3c21da72660d | 153 | unsigned int left : 1; |
Ownasaurus | 1:3c21da72660d | 154 | unsigned int right : 1; |
Ownasaurus | 1:3c21da72660d | 155 | |
Ownasaurus | 1:3c21da72660d | 156 | unsigned int dummy1 : 1; |
Ownasaurus | 1:3c21da72660d | 157 | unsigned int dummy2 : 1; |
Ownasaurus | 6:21365f733399 | 158 | unsigned int l : 1; |
Ownasaurus | 1:3c21da72660d | 159 | unsigned int r : 1; |
Ownasaurus | 1:3c21da72660d | 160 | unsigned int c_up : 1; |
Ownasaurus | 1:3c21da72660d | 161 | unsigned int c_down : 1; |
Ownasaurus | 1:3c21da72660d | 162 | unsigned int c_left : 1; |
Ownasaurus | 1:3c21da72660d | 163 | unsigned int c_right : 1; |
Ownasaurus | 1:3c21da72660d | 164 | |
Ownasaurus | 1:3c21da72660d | 165 | char x_axis; |
Ownasaurus | 1:3c21da72660d | 166 | |
Ownasaurus | 1:3c21da72660d | 167 | char y_axis; |
Ownasaurus | 1:3c21da72660d | 168 | |
Ownasaurus | 1:3c21da72660d | 169 | } n64_data; |
Ownasaurus | 1:3c21da72660d | 170 | |
Ownasaurus | 6:21365f733399 | 171 | struct __attribute__((packed)) XpadControls |
Ownasaurus | 6:21365f733399 | 172 | { |
Ownasaurus | 6:21365f733399 | 173 | uint64_t a; |
Ownasaurus | 6:21365f733399 | 174 | uint64_t b; |
Ownasaurus | 6:21365f733399 | 175 | uint64_t z; |
Ownasaurus | 6:21365f733399 | 176 | uint64_t start; |
Ownasaurus | 6:21365f733399 | 177 | uint64_t up; |
Ownasaurus | 6:21365f733399 | 178 | uint64_t down; |
Ownasaurus | 6:21365f733399 | 179 | uint64_t left; |
Ownasaurus | 6:21365f733399 | 180 | uint64_t right; |
Ownasaurus | 6:21365f733399 | 181 | uint64_t l; |
Ownasaurus | 6:21365f733399 | 182 | uint64_t r; |
Ownasaurus | 6:21365f733399 | 183 | uint64_t c_up; |
Ownasaurus | 6:21365f733399 | 184 | uint64_t c_down; |
Ownasaurus | 6:21365f733399 | 185 | uint64_t c_left; |
Ownasaurus | 6:21365f733399 | 186 | uint64_t c_right; |
Ownasaurus | 6:21365f733399 | 187 | |
Ownasaurus | 6:21365f733399 | 188 | XpadControls() |
Ownasaurus | 6:21365f733399 | 189 | { |
Ownasaurus | 6:21365f733399 | 190 | LoadControls(); |
Ownasaurus | 6:21365f733399 | 191 | } |
Ownasaurus | 6:21365f733399 | 192 | |
Ownasaurus | 6:21365f733399 | 193 | void PrintControls() |
Ownasaurus | 6:21365f733399 | 194 | { |
Ownasaurus | 6:21365f733399 | 195 | pc.printf("The mask for a is: 0x%X\r\n",a); |
Ownasaurus | 6:21365f733399 | 196 | pc.printf("The mask for start is: 0x%X\r\n",start); |
Ownasaurus | 6:21365f733399 | 197 | } |
Ownasaurus | 6:21365f733399 | 198 | } xpc; |
Ownasaurus | 6:21365f733399 | 199 | |
Ownasaurus | 6:21365f733399 | 200 | const int SAVE_ADDR = 0x0800C000; // sector 3 |
Ownasaurus | 6:21365f733399 | 201 | XpadControls* saveData = (XpadControls*)SAVE_ADDR; |
Ownasaurus | 6:21365f733399 | 202 | |
Ownasaurus | 6:21365f733399 | 203 | // linear search, find first button pressed |
Ownasaurus | 6:21365f733399 | 204 | // if the user pressed 2 buttons, its the user's fault |
Ownasaurus | 6:21365f733399 | 205 | uint64_t DetectButton() |
Ownasaurus | 6:21365f733399 | 206 | { |
Ownasaurus | 6:21365f733399 | 207 | if(AXYB != 0) |
Ownasaurus | 6:21365f733399 | 208 | { |
Ownasaurus | 6:21365f733399 | 209 | if(AXYB & 0x01) // a |
Ownasaurus | 6:21365f733399 | 210 | { |
Ownasaurus | 6:21365f733399 | 211 | return A_MASK; |
Ownasaurus | 6:21365f733399 | 212 | } |
Ownasaurus | 6:21365f733399 | 213 | else if((AXYB >> 1) & 0x01) // b |
Ownasaurus | 6:21365f733399 | 214 | { |
Ownasaurus | 6:21365f733399 | 215 | return B_MASK; |
Ownasaurus | 6:21365f733399 | 216 | } |
Ownasaurus | 6:21365f733399 | 217 | else if((AXYB >> 2) & 0x01) // x |
Ownasaurus | 6:21365f733399 | 218 | { |
Ownasaurus | 6:21365f733399 | 219 | return X_MASK; |
Ownasaurus | 6:21365f733399 | 220 | } |
Ownasaurus | 6:21365f733399 | 221 | else if((AXYB >> 3) & 0x01) // y |
Ownasaurus | 6:21365f733399 | 222 | { |
Ownasaurus | 6:21365f733399 | 223 | return Y_MASK; |
Ownasaurus | 6:21365f733399 | 224 | } |
Ownasaurus | 6:21365f733399 | 225 | } |
Ownasaurus | 6:21365f733399 | 226 | else if(XLBRB != 0) |
Ownasaurus | 6:21365f733399 | 227 | { |
Ownasaurus | 6:21365f733399 | 228 | if((XLBRB >> 1) & 0x01) // right bumper |
Ownasaurus | 6:21365f733399 | 229 | { |
Ownasaurus | 6:21365f733399 | 230 | return RB_MASK; |
Ownasaurus | 6:21365f733399 | 231 | } |
Ownasaurus | 6:21365f733399 | 232 | else if(XLBRB & 0x01) // left bumper |
Ownasaurus | 6:21365f733399 | 233 | { |
Ownasaurus | 6:21365f733399 | 234 | return LB_MASK; |
Ownasaurus | 6:21365f733399 | 235 | } |
Ownasaurus | 6:21365f733399 | 236 | // the Xbox ("X") button is ignored in this firmware |
Ownasaurus | 6:21365f733399 | 237 | } |
Ownasaurus | 6:21365f733399 | 238 | else if(bkStrtLCRC != 0) |
Ownasaurus | 6:21365f733399 | 239 | { |
Ownasaurus | 6:21365f733399 | 240 | if(bkStrtLCRC & 0x01) // start |
Ownasaurus | 6:21365f733399 | 241 | { |
Ownasaurus | 6:21365f733399 | 242 | return START_MASK; |
Ownasaurus | 6:21365f733399 | 243 | } |
Ownasaurus | 6:21365f733399 | 244 | else if(bkStrtLCRC & 0x02) // back |
Ownasaurus | 6:21365f733399 | 245 | { |
Ownasaurus | 6:21365f733399 | 246 | return BACK_MASK; |
Ownasaurus | 6:21365f733399 | 247 | } |
Ownasaurus | 6:21365f733399 | 248 | else if(bkStrtLCRC & 0x04) // L analog button |
Ownasaurus | 6:21365f733399 | 249 | { |
Ownasaurus | 6:21365f733399 | 250 | return LAB_MASK; |
Ownasaurus | 6:21365f733399 | 251 | } |
Ownasaurus | 6:21365f733399 | 252 | else if(bkStrtLCRC & 0x08) // R analog button |
Ownasaurus | 6:21365f733399 | 253 | { |
Ownasaurus | 6:21365f733399 | 254 | return RAB_MASK; |
Ownasaurus | 6:21365f733399 | 255 | } |
Ownasaurus | 6:21365f733399 | 256 | } |
Ownasaurus | 6:21365f733399 | 257 | else if(DPad != 0) |
Ownasaurus | 6:21365f733399 | 258 | { |
Ownasaurus | 6:21365f733399 | 259 | if(DPad & 0x01) // DPad Up |
Ownasaurus | 6:21365f733399 | 260 | { |
Ownasaurus | 6:21365f733399 | 261 | return DUP_MASK; |
Ownasaurus | 6:21365f733399 | 262 | } |
Ownasaurus | 6:21365f733399 | 263 | else if(DPad & 0x02) // DPad Down |
Ownasaurus | 6:21365f733399 | 264 | { |
Ownasaurus | 6:21365f733399 | 265 | return DDOWN_MASK; |
Ownasaurus | 6:21365f733399 | 266 | } |
Ownasaurus | 6:21365f733399 | 267 | else if(DPad & 0x04) // DPad Left |
Ownasaurus | 6:21365f733399 | 268 | { |
Ownasaurus | 6:21365f733399 | 269 | return DLEFT_MASK; |
Ownasaurus | 6:21365f733399 | 270 | } |
Ownasaurus | 6:21365f733399 | 271 | else if(DPad & 0x08) // DPad Right |
Ownasaurus | 6:21365f733399 | 272 | { |
Ownasaurus | 6:21365f733399 | 273 | return DRIGHT_MASK; |
Ownasaurus | 6:21365f733399 | 274 | } |
Ownasaurus | 6:21365f733399 | 275 | } |
Ownasaurus | 6:21365f733399 | 276 | else if(Lt > TRIGGER_THRESHOLD) |
Ownasaurus | 6:21365f733399 | 277 | { |
Ownasaurus | 6:21365f733399 | 278 | return LT_MASK; |
Ownasaurus | 6:21365f733399 | 279 | } |
Ownasaurus | 6:21365f733399 | 280 | else if(Rt > TRIGGER_THRESHOLD) |
Ownasaurus | 6:21365f733399 | 281 | { |
Ownasaurus | 6:21365f733399 | 282 | return RT_MASK; |
Ownasaurus | 6:21365f733399 | 283 | } |
Ownasaurus | 6:21365f733399 | 284 | |
Ownasaurus | 6:21365f733399 | 285 | return 0; // no button was pressed |
Ownasaurus | 6:21365f733399 | 286 | } |
Ownasaurus | 6:21365f733399 | 287 | |
Ownasaurus | 6:21365f733399 | 288 | void ChangeButtonMapping(uint64_t bt) |
Ownasaurus | 6:21365f733399 | 289 | { |
Ownasaurus | 6:21365f733399 | 290 | // analog settings must be hardcoded, cannot change on the fly |
Ownasaurus | 6:21365f733399 | 291 | |
Ownasaurus | 6:21365f733399 | 292 | if(state == DPAD_UP) // state = 1 --> dpad up |
Ownasaurus | 6:21365f733399 | 293 | { |
Ownasaurus | 6:21365f733399 | 294 | xpc.up = bt; |
Ownasaurus | 6:21365f733399 | 295 | } |
Ownasaurus | 6:21365f733399 | 296 | else if(state == DPAD_DOWN) // state = 2 --> dpad down |
Ownasaurus | 6:21365f733399 | 297 | { |
Ownasaurus | 6:21365f733399 | 298 | xpc.down = bt; |
Ownasaurus | 6:21365f733399 | 299 | } |
Ownasaurus | 6:21365f733399 | 300 | else if(state == DPAD_LEFT) // state = 3 --> dpad left |
Ownasaurus | 6:21365f733399 | 301 | { |
Ownasaurus | 6:21365f733399 | 302 | xpc.left = bt; |
Ownasaurus | 6:21365f733399 | 303 | } |
Ownasaurus | 6:21365f733399 | 304 | else if(state == DPAD_RIGHT) // state = 4 --> dpad right |
Ownasaurus | 6:21365f733399 | 305 | { |
Ownasaurus | 6:21365f733399 | 306 | xpc.right = bt; |
Ownasaurus | 6:21365f733399 | 307 | } |
Ownasaurus | 6:21365f733399 | 308 | else if(state == BUTTON_START) // state = 5 --> start |
Ownasaurus | 6:21365f733399 | 309 | { |
Ownasaurus | 6:21365f733399 | 310 | xpc.start = bt; |
Ownasaurus | 6:21365f733399 | 311 | } |
Ownasaurus | 6:21365f733399 | 312 | else if(state == BUTTON_B) // state = 6 --> B |
Ownasaurus | 6:21365f733399 | 313 | { |
Ownasaurus | 6:21365f733399 | 314 | xpc.b = bt; |
Ownasaurus | 6:21365f733399 | 315 | } |
Ownasaurus | 6:21365f733399 | 316 | else if(state == BUTTON_A) // state = 7 --> A |
Ownasaurus | 6:21365f733399 | 317 | { |
Ownasaurus | 6:21365f733399 | 318 | xpc.a = bt; |
Ownasaurus | 6:21365f733399 | 319 | } |
Ownasaurus | 6:21365f733399 | 320 | else if(state == C_UP) // state = 8 --> c up |
Ownasaurus | 6:21365f733399 | 321 | { |
Ownasaurus | 6:21365f733399 | 322 | xpc.c_up = bt; |
Ownasaurus | 6:21365f733399 | 323 | } |
Ownasaurus | 6:21365f733399 | 324 | else if(state == C_DOWN) // state = 9 --> c down |
Ownasaurus | 6:21365f733399 | 325 | { |
Ownasaurus | 6:21365f733399 | 326 | xpc.c_down = bt; |
Ownasaurus | 6:21365f733399 | 327 | } |
Ownasaurus | 6:21365f733399 | 328 | else if(state == C_LEFT) // state = 10 --> c left |
Ownasaurus | 6:21365f733399 | 329 | { |
Ownasaurus | 6:21365f733399 | 330 | xpc.c_left = bt; |
Ownasaurus | 6:21365f733399 | 331 | } |
Ownasaurus | 6:21365f733399 | 332 | else if(state == C_RIGHT) // state = 11 --> c right |
Ownasaurus | 6:21365f733399 | 333 | { |
Ownasaurus | 6:21365f733399 | 334 | xpc.c_right = bt; |
Ownasaurus | 6:21365f733399 | 335 | } |
Ownasaurus | 6:21365f733399 | 336 | else if(state == BUTTON_L) // state = 12 --> L |
Ownasaurus | 6:21365f733399 | 337 | { |
Ownasaurus | 6:21365f733399 | 338 | xpc.l = bt; |
Ownasaurus | 6:21365f733399 | 339 | } |
Ownasaurus | 6:21365f733399 | 340 | else if(state == BUTTON_R) // state = 13 --> R |
Ownasaurus | 6:21365f733399 | 341 | { |
Ownasaurus | 6:21365f733399 | 342 | xpc.r = bt; |
Ownasaurus | 6:21365f733399 | 343 | } |
Ownasaurus | 6:21365f733399 | 344 | else if(state == BUTTON_Z) // state = 14 --> Z |
Ownasaurus | 6:21365f733399 | 345 | { |
Ownasaurus | 6:21365f733399 | 346 | xpc.z = bt; |
Ownasaurus | 6:21365f733399 | 347 | } |
Ownasaurus | 6:21365f733399 | 348 | } |
Ownasaurus | 6:21365f733399 | 349 | |
Ownasaurus | 6:21365f733399 | 350 | void SaveControls() |
Ownasaurus | 6:21365f733399 | 351 | { |
Ownasaurus | 6:21365f733399 | 352 | FLASH_Unlock(); //unlock flash writing |
Ownasaurus | 6:21365f733399 | 353 | FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR | |
Ownasaurus | 6:21365f733399 | 354 | FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR|FLASH_FLAG_PGSERR); |
Ownasaurus | 6:21365f733399 | 355 | FLASH_EraseSector(FLASH_Sector_3,VoltageRange_3); // 0x0800C000 - 0x0800FFFF |
Ownasaurus | 6:21365f733399 | 356 | |
Ownasaurus | 6:21365f733399 | 357 | uint32_t* data = (uint32_t*)&xpc; |
Ownasaurus | 6:21365f733399 | 358 | |
Ownasaurus | 6:21365f733399 | 359 | // Total size is 112 bytes |
Ownasaurus | 6:21365f733399 | 360 | // Each word is 4 bytes, so the total size is 28 words |
Ownasaurus | 6:21365f733399 | 361 | // Note: ProgramDoubleWord requires a higher voltage, so we must do one word at a time |
Ownasaurus | 6:21365f733399 | 362 | for(int ct = 0;ct < 28;ct++) |
Ownasaurus | 6:21365f733399 | 363 | { |
Ownasaurus | 6:21365f733399 | 364 | FLASH_ProgramWord(SAVE_ADDR+(ct*4),*data); //each SAVE_ADDR+4 is 4 bytes because it is a memory address |
Ownasaurus | 6:21365f733399 | 365 | data++; // each data+1 is 4 bytes because it is a 32 bit data type |
Ownasaurus | 6:21365f733399 | 366 | } |
Ownasaurus | 6:21365f733399 | 367 | |
Ownasaurus | 6:21365f733399 | 368 | FLASH_Lock(); // lock it back up |
Ownasaurus | 6:21365f733399 | 369 | } |
Ownasaurus | 6:21365f733399 | 370 | |
Ownasaurus | 6:21365f733399 | 371 | void LoadControls() |
Ownasaurus | 6:21365f733399 | 372 | { |
Ownasaurus | 6:21365f733399 | 373 | memcpy(&xpc,saveData,sizeof(XpadControls)); |
Ownasaurus | 6:21365f733399 | 374 | pc.printf("Controls have been loaded!\r\n"); |
Ownasaurus | 6:21365f733399 | 375 | } |
Ownasaurus | 6:21365f733399 | 376 | |
Ownasaurus | 6:21365f733399 | 377 | void AdvanceState() |
Ownasaurus | 6:21365f733399 | 378 | { |
Ownasaurus | 6:21365f733399 | 379 | state++; |
Ownasaurus | 6:21365f733399 | 380 | if(state >= 15) // we're done mapping the controls |
Ownasaurus | 6:21365f733399 | 381 | { |
Ownasaurus | 6:21365f733399 | 382 | SaveControls(); // write directly to flash |
Ownasaurus | 6:21365f733399 | 383 | state = NORMAL; // back to normal controller operation |
Ownasaurus | 6:21365f733399 | 384 | } |
Ownasaurus | 6:21365f733399 | 385 | } |
Ownasaurus | 6:21365f733399 | 386 | |
Ownasaurus | 3:52b2a7514406 | 387 | void onXpadEvent (int buttons, int stick_lx, int stick_ly, int stick_rx, int stick_ry, int trigger_l, int trigger_r) |
Ownasaurus | 2:c20d8438f206 | 388 | { |
Ownasaurus | 3:52b2a7514406 | 389 | AXYB=buttons>>12; |
Ownasaurus | 3:52b2a7514406 | 390 | XLBRB=(buttons&0x0f00)>>8; |
Ownasaurus | 3:52b2a7514406 | 391 | bkStrtLCRC=(buttons&0x00f0)>>4; |
Ownasaurus | 3:52b2a7514406 | 392 | DPad=buttons&0x000f; |
Ownasaurus | 2:c20d8438f206 | 393 | |
Ownasaurus | 5:32c8b316582a | 394 | //pc.printf("AXYB: %u, XLBRB, %u, bkStrtLCRC %u, DPad, %u\r\n",AXYB,XLBRB,bkStrtLCRC,DPad); |
Ownasaurus | 5:32c8b316582a | 395 | |
Ownasaurus | 5:32c8b316582a | 396 | // normalize the analog stick values to be 80 max |
Ownasaurus | 6:21365f733399 | 397 | //LSY=(char)((int)(stick_ly*sN)); |
Ownasaurus | 6:21365f733399 | 398 | //LSX=(char)((int)(stick_lx*sN)); |
Ownasaurus | 3:52b2a7514406 | 399 | RSY=stick_ry*sN; |
Ownasaurus | 3:52b2a7514406 | 400 | RSX=stick_rx*sN; |
Ownasaurus | 2:c20d8438f206 | 401 | |
Ownasaurus | 5:32c8b316582a | 402 | // normalize the trigger values to be 10 max |
Ownasaurus | 3:52b2a7514406 | 403 | Lt=trigger_l*tN; |
Ownasaurus | 3:52b2a7514406 | 404 | Rt=trigger_r*tN; |
Ownasaurus | 2:c20d8438f206 | 405 | |
Ownasaurus | 6:21365f733399 | 406 | if(state == 0) |
Ownasaurus | 3:52b2a7514406 | 407 | { |
Ownasaurus | 6:21365f733399 | 408 | memset(&n64_data,0,4); // clear controller state |
Ownasaurus | 6:21365f733399 | 409 | |
Ownasaurus | 6:21365f733399 | 410 | uint64_t buttons_and_triggers = buttons; |
Ownasaurus | 6:21365f733399 | 411 | |
Ownasaurus | 6:21365f733399 | 412 | if(Lt > TRIGGER_THRESHOLD) |
Ownasaurus | 6:21365f733399 | 413 | { |
Ownasaurus | 6:21365f733399 | 414 | buttons_and_triggers |= LT_MASK; |
Ownasaurus | 6:21365f733399 | 415 | } |
Ownasaurus | 6:21365f733399 | 416 | if(Rt > TRIGGER_THRESHOLD) |
Ownasaurus | 6:21365f733399 | 417 | { |
Ownasaurus | 6:21365f733399 | 418 | buttons_and_triggers |= RT_MASK; |
Ownasaurus | 6:21365f733399 | 419 | } |
Ownasaurus | 6:21365f733399 | 420 | |
Ownasaurus | 6:21365f733399 | 421 | if(buttons_and_triggers & xpc.up) |
Ownasaurus | 6:21365f733399 | 422 | { |
Ownasaurus | 6:21365f733399 | 423 | n64_data.up = 1; |
Ownasaurus | 6:21365f733399 | 424 | } |
Ownasaurus | 6:21365f733399 | 425 | if(buttons_and_triggers & xpc.down) |
Ownasaurus | 6:21365f733399 | 426 | { |
Ownasaurus | 6:21365f733399 | 427 | n64_data.down = 1; |
Ownasaurus | 6:21365f733399 | 428 | } |
Ownasaurus | 6:21365f733399 | 429 | if(buttons_and_triggers & xpc.left) |
Ownasaurus | 6:21365f733399 | 430 | { |
Ownasaurus | 6:21365f733399 | 431 | n64_data.left = 1; |
Ownasaurus | 6:21365f733399 | 432 | } |
Ownasaurus | 6:21365f733399 | 433 | if(buttons_and_triggers & xpc.right) |
Ownasaurus | 6:21365f733399 | 434 | { |
Ownasaurus | 6:21365f733399 | 435 | n64_data.right = 1; |
Ownasaurus | 6:21365f733399 | 436 | } |
Ownasaurus | 6:21365f733399 | 437 | if(buttons_and_triggers & xpc.c_up) |
Ownasaurus | 6:21365f733399 | 438 | { |
Ownasaurus | 6:21365f733399 | 439 | n64_data.c_up = 1; |
Ownasaurus | 6:21365f733399 | 440 | } |
Ownasaurus | 6:21365f733399 | 441 | if(buttons_and_triggers & xpc.c_down) |
Ownasaurus | 6:21365f733399 | 442 | { |
Ownasaurus | 6:21365f733399 | 443 | n64_data.c_down = 1; |
Ownasaurus | 6:21365f733399 | 444 | } |
Ownasaurus | 6:21365f733399 | 445 | if(buttons_and_triggers & xpc.c_left) |
Ownasaurus | 6:21365f733399 | 446 | { |
Ownasaurus | 6:21365f733399 | 447 | n64_data.c_left = 1; |
Ownasaurus | 6:21365f733399 | 448 | } |
Ownasaurus | 6:21365f733399 | 449 | if(buttons_and_triggers & xpc.c_right) |
Ownasaurus | 6:21365f733399 | 450 | { |
Ownasaurus | 6:21365f733399 | 451 | n64_data.c_right = 1; |
Ownasaurus | 6:21365f733399 | 452 | } |
Ownasaurus | 6:21365f733399 | 453 | if(buttons_and_triggers & xpc.l) |
Ownasaurus | 6:21365f733399 | 454 | { |
Ownasaurus | 6:21365f733399 | 455 | n64_data.l = 1; |
Ownasaurus | 6:21365f733399 | 456 | } |
Ownasaurus | 6:21365f733399 | 457 | if(buttons_and_triggers & xpc.r) |
Ownasaurus | 6:21365f733399 | 458 | { |
Ownasaurus | 6:21365f733399 | 459 | n64_data.r = 1; |
Ownasaurus | 6:21365f733399 | 460 | } |
Ownasaurus | 6:21365f733399 | 461 | if(buttons_and_triggers & xpc.z) |
Ownasaurus | 6:21365f733399 | 462 | { |
Ownasaurus | 6:21365f733399 | 463 | n64_data.z = 1; |
Ownasaurus | 6:21365f733399 | 464 | } |
Ownasaurus | 6:21365f733399 | 465 | if(buttons_and_triggers & xpc.a) |
Ownasaurus | 6:21365f733399 | 466 | { |
Ownasaurus | 6:21365f733399 | 467 | n64_data.a = 1; |
Ownasaurus | 6:21365f733399 | 468 | } |
Ownasaurus | 6:21365f733399 | 469 | if(buttons_and_triggers & xpc.b) |
Ownasaurus | 6:21365f733399 | 470 | { |
Ownasaurus | 6:21365f733399 | 471 | n64_data.b = 1; |
Ownasaurus | 6:21365f733399 | 472 | } |
Ownasaurus | 6:21365f733399 | 473 | if(buttons_and_triggers & xpc.start) |
Ownasaurus | 6:21365f733399 | 474 | { |
Ownasaurus | 6:21365f733399 | 475 | n64_data.start = 1; |
Ownasaurus | 6:21365f733399 | 476 | } |
Ownasaurus | 6:21365f733399 | 477 | |
Ownasaurus | 6:21365f733399 | 478 | // LD code, val is the x_axis value from -32k to +32k |
Ownasaurus | 6:21365f733399 | 479 | // seems pretty inefficient but hopefully its fast enough |
Ownasaurus | 6:21365f733399 | 480 | int val = stick_lx; |
Ownasaurus | 6:21365f733399 | 481 | float X1_norm; |
Ownasaurus | 6:21365f733399 | 482 | if(val > 0) |
Ownasaurus | 6:21365f733399 | 483 | X1_norm = val / 32767.f; |
Ownasaurus | 8:2479ec34467b | 484 | else X1_norm = val / -32767.f; |
Ownasaurus | 8:2479ec34467b | 485 | |
Ownasaurus | 8:2479ec34467b | 486 | X1_norm = (X1_norm - dead_zone / 100.0) * 100.0 / (100.0 - dead_zone); |
Ownasaurus | 8:2479ec34467b | 487 | if (X1_norm < 0) X1_norm = 0; |
Ownasaurus | 6:21365f733399 | 488 | |
Ownasaurus | 8:2479ec34467b | 489 | char ans = (char)(127 * X1_norm * joy_range / 100); |
Ownasaurus | 8:2479ec34467b | 490 | if (val < 0) ans = -ans; |
Ownasaurus | 8:2479ec34467b | 491 | n64_data.x_axis = reverse(ans); |
Ownasaurus | 6:21365f733399 | 492 | |
Ownasaurus | 6:21365f733399 | 493 | // repeat for y values |
Ownasaurus | 6:21365f733399 | 494 | val = stick_ly; |
Ownasaurus | 6:21365f733399 | 495 | if(val > 0) |
Ownasaurus | 6:21365f733399 | 496 | X1_norm = val / 32767.f; |
Ownasaurus | 8:2479ec34467b | 497 | else X1_norm = val / -32767.f; |
Ownasaurus | 8:2479ec34467b | 498 | |
Ownasaurus | 8:2479ec34467b | 499 | X1_norm = (X1_norm - dead_zone / 100.0) * 100.0 / (100.0 - dead_zone); |
Ownasaurus | 8:2479ec34467b | 500 | if (X1_norm < 0) X1_norm = 0; |
Ownasaurus | 6:21365f733399 | 501 | |
Ownasaurus | 8:2479ec34467b | 502 | ans = (char)(127 * X1_norm * joy_range / 100); |
Ownasaurus | 8:2479ec34467b | 503 | if (val < 0) ans = -ans; |
Ownasaurus | 8:2479ec34467b | 504 | n64_data.y_axis = reverse(ans); |
Ownasaurus | 6:21365f733399 | 505 | |
Ownasaurus | 6:21365f733399 | 506 | // Generic analog stick |
Ownasaurus | 6:21365f733399 | 507 | /*if(LSX > DEADZONE) |
Ownasaurus | 6:21365f733399 | 508 | { |
Ownasaurus | 6:21365f733399 | 509 | n64_data.x_axis = reverse(LSX); |
Ownasaurus | 6:21365f733399 | 510 | } |
Ownasaurus | 6:21365f733399 | 511 | if(LSY > DEADZONE) |
Ownasaurus | 6:21365f733399 | 512 | { |
Ownasaurus | 6:21365f733399 | 513 | n64_data.y_axis = reverse(LSY); |
Ownasaurus | 6:21365f733399 | 514 | }*/ |
Ownasaurus | 3:52b2a7514406 | 515 | } |
Ownasaurus | 6:21365f733399 | 516 | else // state > 0 so we are in the process of changing controls |
Ownasaurus | 5:32c8b316582a | 517 | { |
Ownasaurus | 6:21365f733399 | 518 | uint64_t b = DetectButton(); // read for button presses (just do linear search) |
Ownasaurus | 6:21365f733399 | 519 | if(b != 0) /*button was actually is pressed*/ |
Ownasaurus | 6:21365f733399 | 520 | { |
Ownasaurus | 6:21365f733399 | 521 | if(XpadButtonPressed == false) |
Ownasaurus | 6:21365f733399 | 522 | { |
Ownasaurus | 6:21365f733399 | 523 | XpadButtonPressed = true; |
Ownasaurus | 6:21365f733399 | 524 | ChangeButtonMapping(b); |
Ownasaurus | 6:21365f733399 | 525 | AdvanceState(); |
Ownasaurus | 6:21365f733399 | 526 | } |
Ownasaurus | 6:21365f733399 | 527 | } |
Ownasaurus | 6:21365f733399 | 528 | else |
Ownasaurus | 6:21365f733399 | 529 | { |
Ownasaurus | 6:21365f733399 | 530 | XpadButtonPressed = false; |
Ownasaurus | 6:21365f733399 | 531 | } |
Ownasaurus | 2:c20d8438f206 | 532 | } |
Ownasaurus | 2:c20d8438f206 | 533 | } |
Ownasaurus | 0:eb2258e8c4b5 | 534 | |
Ownasaurus | 0:eb2258e8c4b5 | 535 | // 0 is 3 microseconds low followed by 1 microsecond high |
Ownasaurus | 0:eb2258e8c4b5 | 536 | // 1 is 1 microsecond low followed by 3 microseconds high |
Ownasaurus | 0:eb2258e8c4b5 | 537 | unsigned int GetMiddleOfPulse() |
Ownasaurus | 0:eb2258e8c4b5 | 538 | { |
Ownasaurus | 0:eb2258e8c4b5 | 539 | // wait for line to go high |
Ownasaurus | 0:eb2258e8c4b5 | 540 | while(1) |
Ownasaurus | 0:eb2258e8c4b5 | 541 | { |
Ownasaurus | 0:eb2258e8c4b5 | 542 | if(data.read() == 1) break; |
Ownasaurus | 0:eb2258e8c4b5 | 543 | } |
Ownasaurus | 0:eb2258e8c4b5 | 544 | |
Ownasaurus | 0:eb2258e8c4b5 | 545 | // wait for line to go low |
Ownasaurus | 0:eb2258e8c4b5 | 546 | while(1) |
Ownasaurus | 0:eb2258e8c4b5 | 547 | { |
Ownasaurus | 0:eb2258e8c4b5 | 548 | if(data.read() == 0) break; |
Ownasaurus | 0:eb2258e8c4b5 | 549 | } |
Ownasaurus | 0:eb2258e8c4b5 | 550 | |
Ownasaurus | 0:eb2258e8c4b5 | 551 | // now we have the falling edge |
Ownasaurus | 0:eb2258e8c4b5 | 552 | // wait 2 microseconds to be in the middle of the pulse, and read. high --> 1. low --> 0. |
Ownasaurus | 0:eb2258e8c4b5 | 553 | my_wait_us_asm(2); |
Ownasaurus | 0:eb2258e8c4b5 | 554 | return (unsigned int) data.read(); |
Ownasaurus | 0:eb2258e8c4b5 | 555 | } |
Ownasaurus | 0:eb2258e8c4b5 | 556 | |
Ownasaurus | 0:eb2258e8c4b5 | 557 | // continuously read bits until at least 9 are read, confirm valid command, return without stop bit |
Ownasaurus | 0:eb2258e8c4b5 | 558 | unsigned int readCommand() |
Ownasaurus | 0:eb2258e8c4b5 | 559 | { |
Ownasaurus | 0:eb2258e8c4b5 | 560 | unsigned int command = GetMiddleOfPulse(), bits_read = 1; |
Ownasaurus | 0:eb2258e8c4b5 | 561 | |
Ownasaurus | 0:eb2258e8c4b5 | 562 | while(1) // read at least 9 bits (2 bytes + stop bit) |
Ownasaurus | 0:eb2258e8c4b5 | 563 | { |
Ownasaurus | 0:eb2258e8c4b5 | 564 | //my_wait_us_asm(4); |
Ownasaurus | 0:eb2258e8c4b5 | 565 | command = command << 1; // make room for the new bit |
Ownasaurus | 0:eb2258e8c4b5 | 566 | //command += data.read(); // place the new bit into the command |
Ownasaurus | 0:eb2258e8c4b5 | 567 | command += GetMiddleOfPulse(); |
Ownasaurus | 0:eb2258e8c4b5 | 568 | command &= 0x1FF; // remove all except the last 9 bits |
Ownasaurus | 0:eb2258e8c4b5 | 569 | |
Ownasaurus | 0:eb2258e8c4b5 | 570 | bits_read++; |
Ownasaurus | 0:eb2258e8c4b5 | 571 | |
Ownasaurus | 0:eb2258e8c4b5 | 572 | if(bits_read >= 9) // only consider when at least a whole command's length has been read |
Ownasaurus | 0:eb2258e8c4b5 | 573 | { |
Ownasaurus | 1:3c21da72660d | 574 | if(command == 0x3 || command == 0x1 || command == 0x1FF || command == 0x5 || command == 0x7) |
Ownasaurus | 0:eb2258e8c4b5 | 575 | { |
Ownasaurus | 0:eb2258e8c4b5 | 576 | // 0x3 = 0x1 + stop bit --> get controller state |
Ownasaurus | 0:eb2258e8c4b5 | 577 | // 0x1 = 0x0 + stop bit --> who are you? |
Ownasaurus | 0:eb2258e8c4b5 | 578 | // 0x1FF = 0xFF + stop bit --> reset signal |
Ownasaurus | 1:3c21da72660d | 579 | // 0x5 = 0x10 + stop bit --> read |
Ownasaurus | 1:3c21da72660d | 580 | // 0x7 = 0x11 + stop bit --> write |
Ownasaurus | 0:eb2258e8c4b5 | 581 | command = command >> 1; // get rid of the stop bit |
Ownasaurus | 0:eb2258e8c4b5 | 582 | return command; |
Ownasaurus | 0:eb2258e8c4b5 | 583 | } |
Ownasaurus | 0:eb2258e8c4b5 | 584 | } |
Ownasaurus | 0:eb2258e8c4b5 | 585 | } |
Ownasaurus | 0:eb2258e8c4b5 | 586 | } |
Ownasaurus | 0:eb2258e8c4b5 | 587 | |
Ownasaurus | 0:eb2258e8c4b5 | 588 | void write_1() |
Ownasaurus | 0:eb2258e8c4b5 | 589 | { |
Ownasaurus | 0:eb2258e8c4b5 | 590 | data = 0; |
Ownasaurus | 0:eb2258e8c4b5 | 591 | my_wait_us_asm(1); |
Ownasaurus | 0:eb2258e8c4b5 | 592 | data = 1; |
Ownasaurus | 0:eb2258e8c4b5 | 593 | my_wait_us_asm(3); |
Ownasaurus | 0:eb2258e8c4b5 | 594 | //pc.printf("1"); |
Ownasaurus | 0:eb2258e8c4b5 | 595 | } |
Ownasaurus | 0:eb2258e8c4b5 | 596 | |
Ownasaurus | 0:eb2258e8c4b5 | 597 | void write_0() |
Ownasaurus | 0:eb2258e8c4b5 | 598 | { |
Ownasaurus | 0:eb2258e8c4b5 | 599 | data = 0; |
Ownasaurus | 0:eb2258e8c4b5 | 600 | my_wait_us_asm(3); |
Ownasaurus | 0:eb2258e8c4b5 | 601 | data = 1; |
Ownasaurus | 0:eb2258e8c4b5 | 602 | my_wait_us_asm(1); |
Ownasaurus | 0:eb2258e8c4b5 | 603 | //pc.printf("0"); |
Ownasaurus | 0:eb2258e8c4b5 | 604 | } |
Ownasaurus | 0:eb2258e8c4b5 | 605 | |
Ownasaurus | 0:eb2258e8c4b5 | 606 | |
Ownasaurus | 1:3c21da72660d | 607 | void SendStop() |
Ownasaurus | 0:eb2258e8c4b5 | 608 | { |
Ownasaurus | 0:eb2258e8c4b5 | 609 | data = 0; |
Ownasaurus | 0:eb2258e8c4b5 | 610 | my_wait_us_asm(1); |
Ownasaurus | 0:eb2258e8c4b5 | 611 | data = 1; |
Ownasaurus | 0:eb2258e8c4b5 | 612 | } |
Ownasaurus | 0:eb2258e8c4b5 | 613 | |
Ownasaurus | 1:3c21da72660d | 614 | // send a byte from LSB to MSB (proper serialization) |
Ownasaurus | 1:3c21da72660d | 615 | void SendByte(unsigned char b) |
Ownasaurus | 0:eb2258e8c4b5 | 616 | { |
Ownasaurus | 0:eb2258e8c4b5 | 617 | for(int i = 0;i < 8;i++) // send all 8 bits, one at a time |
Ownasaurus | 0:eb2258e8c4b5 | 618 | { |
Ownasaurus | 0:eb2258e8c4b5 | 619 | if((b >> i) & 1) |
Ownasaurus | 0:eb2258e8c4b5 | 620 | { |
Ownasaurus | 0:eb2258e8c4b5 | 621 | write_1(); |
Ownasaurus | 0:eb2258e8c4b5 | 622 | } |
Ownasaurus | 0:eb2258e8c4b5 | 623 | else |
Ownasaurus | 0:eb2258e8c4b5 | 624 | { |
Ownasaurus | 0:eb2258e8c4b5 | 625 | write_0(); |
Ownasaurus | 0:eb2258e8c4b5 | 626 | } |
Ownasaurus | 0:eb2258e8c4b5 | 627 | } |
Ownasaurus | 0:eb2258e8c4b5 | 628 | } |
Ownasaurus | 0:eb2258e8c4b5 | 629 | |
Ownasaurus | 1:3c21da72660d | 630 | void SendIdentity() |
Ownasaurus | 1:3c21da72660d | 631 | { |
Ownasaurus | 1:3c21da72660d | 632 | // reply 0x05, 0x00, 0x02 |
Ownasaurus | 1:3c21da72660d | 633 | SendByte(0x05); |
Ownasaurus | 1:3c21da72660d | 634 | SendByte(0x00); |
Ownasaurus | 1:3c21da72660d | 635 | SendByte(0x02); |
Ownasaurus | 1:3c21da72660d | 636 | SendStop(); |
Ownasaurus | 1:3c21da72660d | 637 | } |
Ownasaurus | 1:3c21da72660d | 638 | |
Ownasaurus | 1:3c21da72660d | 639 | void SendControllerData() |
Ownasaurus | 1:3c21da72660d | 640 | { |
Ownasaurus | 1:3c21da72660d | 641 | unsigned long data = *(unsigned long*)&n64_data; |
Ownasaurus | 1:3c21da72660d | 642 | unsigned int size = sizeof(data) * 8; // should be 4 bytes * 8 = 32 bits |
Ownasaurus | 1:3c21da72660d | 643 | |
Ownasaurus | 1:3c21da72660d | 644 | for(unsigned int i = 0;i < size;i++) |
Ownasaurus | 1:3c21da72660d | 645 | { |
Ownasaurus | 1:3c21da72660d | 646 | if((data >> i) & 1) |
Ownasaurus | 1:3c21da72660d | 647 | { |
Ownasaurus | 1:3c21da72660d | 648 | write_1(); |
Ownasaurus | 1:3c21da72660d | 649 | } |
Ownasaurus | 1:3c21da72660d | 650 | else |
Ownasaurus | 1:3c21da72660d | 651 | { |
Ownasaurus | 1:3c21da72660d | 652 | write_0(); |
Ownasaurus | 1:3c21da72660d | 653 | } |
Ownasaurus | 1:3c21da72660d | 654 | } |
Ownasaurus | 1:3c21da72660d | 655 | |
Ownasaurus | 1:3c21da72660d | 656 | SendStop(); |
Ownasaurus | 1:3c21da72660d | 657 | } |
Ownasaurus | 1:3c21da72660d | 658 | |
Ownasaurus | 0:eb2258e8c4b5 | 659 | int main() |
Ownasaurus | 0:eb2258e8c4b5 | 660 | { |
Ownasaurus | 6:21365f733399 | 661 | bool buttonPressed = false; |
Ownasaurus | 5:32c8b316582a | 662 | |
Ownasaurus | 2:c20d8438f206 | 663 | pc.printf("\r\nNow loaded! SystemCoreClock = %d Hz\r\n", SystemCoreClock); |
Ownasaurus | 1:3c21da72660d | 664 | |
Ownasaurus | 2:c20d8438f206 | 665 | USBHostXpad xpad; |
Ownasaurus | 2:c20d8438f206 | 666 | if (!xpad.connect()) { |
Ownasaurus | 2:c20d8438f206 | 667 | pc.printf("Error: XBox controller not found.\n"); |
Ownasaurus | 1:3c21da72660d | 668 | } |
Ownasaurus | 2:c20d8438f206 | 669 | |
Ownasaurus | 2:c20d8438f206 | 670 | xpad.attachEvent(onXpadEvent); |
Ownasaurus | 2:c20d8438f206 | 671 | xpad.led(USBHostXpad::LED1_ON); |
Ownasaurus | 0:eb2258e8c4b5 | 672 | |
Ownasaurus | 0:eb2258e8c4b5 | 673 | while(1) |
Ownasaurus | 0:eb2258e8c4b5 | 674 | { |
Ownasaurus | 6:21365f733399 | 675 | if(state == NORMAL) |
Ownasaurus | 0:eb2258e8c4b5 | 676 | { |
Ownasaurus | 6:21365f733399 | 677 | if(!button) // user wants to change controls |
Ownasaurus | 6:21365f733399 | 678 | { |
Ownasaurus | 6:21365f733399 | 679 | if(!buttonPressed) // make sure it's a separate button press |
Ownasaurus | 6:21365f733399 | 680 | { |
Ownasaurus | 6:21365f733399 | 681 | buttonPressed = true; |
Ownasaurus | 6:21365f733399 | 682 | state++; |
Ownasaurus | 6:21365f733399 | 683 | continue; |
Ownasaurus | 6:21365f733399 | 684 | } |
Ownasaurus | 6:21365f733399 | 685 | } |
Ownasaurus | 6:21365f733399 | 686 | else |
Ownasaurus | 6:21365f733399 | 687 | { |
Ownasaurus | 6:21365f733399 | 688 | buttonPressed = false; |
Ownasaurus | 6:21365f733399 | 689 | } |
Ownasaurus | 6:21365f733399 | 690 | |
Ownasaurus | 6:21365f733399 | 691 | // Set pin mode to input |
Ownasaurus | 6:21365f733399 | 692 | data.input(); |
Ownasaurus | 6:21365f733399 | 693 | |
Ownasaurus | 6:21365f733399 | 694 | USBHost::poll(); |
Ownasaurus | 6:21365f733399 | 695 | |
Ownasaurus | 6:21365f733399 | 696 | __disable_irq(); // Disable Interrupts |
Ownasaurus | 6:21365f733399 | 697 | |
Ownasaurus | 6:21365f733399 | 698 | // Read 64 command |
Ownasaurus | 6:21365f733399 | 699 | unsigned int cmd = readCommand(); |
Ownasaurus | 6:21365f733399 | 700 | |
Ownasaurus | 6:21365f733399 | 701 | my_wait_us_asm(2); // wait a small amount of time before replying |
Ownasaurus | 6:21365f733399 | 702 | |
Ownasaurus | 6:21365f733399 | 703 | //-------- SEND RESPONSE |
Ownasaurus | 6:21365f733399 | 704 | // Set pin mode to output |
Ownasaurus | 6:21365f733399 | 705 | data.output(); |
Ownasaurus | 6:21365f733399 | 706 | |
Ownasaurus | 6:21365f733399 | 707 | switch(cmd) |
Ownasaurus | 6:21365f733399 | 708 | { |
Ownasaurus | 6:21365f733399 | 709 | case 0x00: // identity |
Ownasaurus | 6:21365f733399 | 710 | case 0xFF: // reset |
Ownasaurus | 6:21365f733399 | 711 | SendIdentity(); |
Ownasaurus | 6:21365f733399 | 712 | break; |
Ownasaurus | 6:21365f733399 | 713 | case 0x01: // poll for state |
Ownasaurus | 6:21365f733399 | 714 | SendControllerData(); |
Ownasaurus | 6:21365f733399 | 715 | break; |
Ownasaurus | 6:21365f733399 | 716 | default: |
Ownasaurus | 6:21365f733399 | 717 | // we do not process the read and write commands (memory pack) |
Ownasaurus | 6:21365f733399 | 718 | break; |
Ownasaurus | 6:21365f733399 | 719 | } |
Ownasaurus | 6:21365f733399 | 720 | __enable_irq(); // Enable Interrupts |
Ownasaurus | 6:21365f733399 | 721 | //-------- DONE SENDING RESPOSE |
Ownasaurus | 0:eb2258e8c4b5 | 722 | } |
Ownasaurus | 6:21365f733399 | 723 | else |
Ownasaurus | 6:21365f733399 | 724 | { |
Ownasaurus | 6:21365f733399 | 725 | if(!button) // user wants to cancel and return to regular mode |
Ownasaurus | 6:21365f733399 | 726 | { |
Ownasaurus | 6:21365f733399 | 727 | if(!buttonPressed) // make sure it's a separate button press |
Ownasaurus | 6:21365f733399 | 728 | { |
Ownasaurus | 7:65d1a7a3948b | 729 | state = NORMAL; |
Ownasaurus | 6:21365f733399 | 730 | buttonPressed = true; |
Ownasaurus | 6:21365f733399 | 731 | continue; |
Ownasaurus | 6:21365f733399 | 732 | } |
Ownasaurus | 6:21365f733399 | 733 | } |
Ownasaurus | 6:21365f733399 | 734 | else |
Ownasaurus | 6:21365f733399 | 735 | { |
Ownasaurus | 6:21365f733399 | 736 | buttonPressed = false; |
Ownasaurus | 6:21365f733399 | 737 | } |
Ownasaurus | 6:21365f733399 | 738 | |
Ownasaurus | 6:21365f733399 | 739 | myled = !myled; |
Ownasaurus | 6:21365f733399 | 740 | USBHost::poll(); |
Ownasaurus | 6:21365f733399 | 741 | wait(0.1); |
Ownasaurus | 6:21365f733399 | 742 | |
Ownasaurus | 6:21365f733399 | 743 | if(state == NORMAL) // about to return to normal operation, make sure the LED remains off |
Ownasaurus | 6:21365f733399 | 744 | { |
Ownasaurus | 6:21365f733399 | 745 | myled = false; |
Ownasaurus | 6:21365f733399 | 746 | XpadButtonPressed = false; |
Ownasaurus | 6:21365f733399 | 747 | } |
Ownasaurus | 6:21365f733399 | 748 | } |
Ownasaurus | 0:eb2258e8c4b5 | 749 | } |
Ownasaurus | 0:eb2258e8c4b5 | 750 | } |