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Hello world!
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sun, 22 Feb 2015 17:41:32 +0100
parents
children 5ba54fc65608
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0
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1 /*
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2 Circle Pad example made by Aurelio Mannara for ctrulib
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3 Please refer to https://github.com/smealum/ctrulib/blob/master/libctru/include/3ds/services/hid.h for more information
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4 This code was modified for the last time on: 12/13/2014 2:20 UTC+1
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5
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6 This wouldn't be possible without the amazing work done by:
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7 -Smealum
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8 -fincs
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9 -WinterMute
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10 -yellows8
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11 -plutoo
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12 -mtheall
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13 -Many others who worked on 3DS and I'm surely forgetting about
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14 */
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15
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16 #include <3ds.h>
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17 #include <arpa/inet.h>
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18 #include <assert.h>
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19 #include <malloc.h>
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20 #include <netdb.h>
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21 #include <stdio.h>
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22 #include <string.h>
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23 #include <sys/socket.h>
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24
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25 static u32 *SOC_buffer = NULL;
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26
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27 int create_socket(int domain, int type, struct sockaddr *addr)
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28 {
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29 int fd = socket(domain, type, 0);
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30 if (fd < 0) {
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31 printf("socket() failed.\n");
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32 return -1;
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33 }
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34
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35 if (addr) {
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36 if (connect(fd, addr, sizeof(*addr)) < 0) {
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37 printf("connect() failed.\n");
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38 return -1;
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39 }
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40 }
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41
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42 return fd;
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43 }
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44
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45 struct sockaddr* get_sockaddr_from_hostname(const char *hostname, int port)
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46 {
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47 struct hostent *server = gethostbyname(hostname);
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48 if (!server) {
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49 printf("gethostbyname() failed.\n");
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50 return NULL;
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51 }
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52
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53 struct sockaddr_in *addr = calloc(1, sizeof(struct sockaddr_in));
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54 if (!addr) {
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55 printf("calloc() failed.\n");
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56 return NULL;
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57 }
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58
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59 //memset(&addr, 0, sizeof(struct sockaddr_in));
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60 addr->sin_family = AF_INET;
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61 addr->sin_port = htons(port);
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62 memcpy(&addr->sin_addr.s_addr, server->h_addr_list[0], server->h_length);
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63
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64 return (struct sockaddr*) addr;
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65 }
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66
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67 struct sockaddr* get_sockaddr_from_ip(const char *hostname, int port)
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68 {
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69 struct sockaddr_in *addr = calloc(1, sizeof(struct sockaddr_in));
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70 if (!addr) {
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71 printf("calloc() failed.\n");
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72 return NULL;
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73 }
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74
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75 //memset(&addr, 0, sizeof(struct sockaddr_in));
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76 addr->sin_family = AF_INET;
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77 addr->sin_port = htons(port);
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78 addr->sin_addr.s_addr = inet_addr(hostname);
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79
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80 return (struct sockaddr*) addr;
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81 }
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82
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83 struct network_t {
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84 int tcp_fd;
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85 int udp_fd;
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86 struct sockaddr *addr;
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87 int addr_size;
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88 };
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89
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90 struct network_t *networkInit(const char *hostname, int port)
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91 {
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92 const unsigned SOC_ALIGN = 0x1000;
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93 const unsigned SOC_BUFFERSIZE = 0x100000;
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94
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95 SOC_buffer = (u32*)calloc(SOC_ALIGN, SOC_BUFFERSIZE);
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96 if (!SOC_buffer) {
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97 printf("calloc() failed.\n");
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98 return NULL;
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99 }
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100
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101 unsigned initialized = SOC_Initialize(SOC_buffer, SOC_BUFFERSIZE);
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102 if (initialized) {
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103 printf("SOC_Initialize() failed.\n");
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104 return NULL;
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105 }
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106
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107 //struct sockaddr *addr = get_sockaddr_from_hostname(hostname, port);
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108 struct sockaddr *addr = get_sockaddr_from_ip(hostname, port);
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109 if (!addr)
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110 return NULL;
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111
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112 // TODO: IPv6
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113 int domain = AF_INET;
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114
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115 struct network_t *n = malloc(sizeof(struct network_t));
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116 //n->tcp_fd = create_socket(domain, SOCK_STREAM, addr);
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117 n->udp_fd = create_socket(domain, SOCK_DGRAM, NULL);
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118 n->addr = addr;
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119 n->addr_size = sizeof(struct sockaddr_in);
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120 return n;
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121 }
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122
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123 int sendKeys(struct network_t *n, u32 keys)
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124 {
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125 const char *msg = (const char*) &keys;
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126 int msglen = sizeof(keys);
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127 return sendto(n->udp_fd, msg, msglen, 0, n->addr, n->addr_size);
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128 }
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129
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130 int main(int argc, char **argv)
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131 {
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132 //Matrix containing the name of each key. Useful for printing when a key is pressed
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133 char keysNames[32][32] = {
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134 "KEY_A", "KEY_B", "KEY_SELECT", "KEY_START",
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135 "KEY_DRIGHT", "KEY_DLEFT", "KEY_DUP", "KEY_DDOWN",
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136 "KEY_R", "KEY_L", "KEY_X", "KEY_Y",
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137 "", "", "KEY_ZL", "KEY_ZR",
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138 "", "", "", "",
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139 "KEY_TOUCH", "", "", "",
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140 "KEY_CSTICK_RIGHT", "KEY_CSTICK_LEFT", "KEY_CSTICK_UP", "KEY_CSTICK_DOWN",
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141 "KEY_CPAD_RIGHT", "KEY_CPAD_LEFT", "KEY_CPAD_UP", "KEY_CPAD_DOWN"
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142 };
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143
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144 // Initialize services
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145 gfxInitDefault();
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146
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147 //Initialize console on top screen. Using NULL as the second argument tells the console library to use the internal console structure as current one
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148 consoleInit(GFX_TOP, NULL);
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149
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150 u32 old_keys = 0; //In these variables there will be information about keys detected in the previous frame
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151
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152 // Initialize the network
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153 struct network_t *n = networkInit("192.168.0.13", 16150);
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154 if (!n) {
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155 printf("HORROR!");
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156 fflush(stdout);
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157 gfxFlushBuffers();
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158 gfxSwapBuffers();
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159 for(;;);
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160 }
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161
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162 printf("\x1b[0;0HPress Start to exit.");
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163 printf("\x1b[1;0HCirclePad position:");
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164
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165 // Main loop
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166 while (aptMainLoop())
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167 {
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168 //Scan all the inputs. This should be done once for each frame
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169 hidScanInput();
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170
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171 //hidKeysHeld returns information about which buttons have are held down in this frame
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172 u32 keys = hidKeysHeld();
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173
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174 //if (keys & KEY_START) break; // break in order to return to hbmenu
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175
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176 //Do the keys printing only if keys have changed
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177 if (keys != old_keys)
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178 {
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179 //Clear console
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180 consoleClear();
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181
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182 //These two lines must be rewritten because we cleared the whole console
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183 printf("\x1b[0;0HPress Start to exit.");
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184 printf("\x1b[1;0HCirclePad position:");
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185
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186 printf("\x1b[3;0H"); //Move the cursor to the fourth row because on the third one we'll write the circle pad position
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187
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188 //Check if some of the keys are down, held or up
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189 for (int i = 0; i < 32; i++)
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190 {
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191 if (keys & BIT(i)) printf("%s\n", keysNames[i]);
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192 }
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193
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194 if (sendKeys(n, keys) < 0) {
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195 perror("sendKeys");
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196 printf("HORROR! sendKeys()!");
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197 fflush(stdout);
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198 gfxFlushBuffers();
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199 gfxSwapBuffers();
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200 for(;;);
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201 }
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202 }
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203
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204 //Set keys old values for the next frame
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205 old_keys = keys;
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206
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207 circlePosition pos;
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208
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209 //Read the CirclePad position
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210 hidCircleRead(&pos);
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211
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212 //Print the CirclePad position
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213 printf("\x1b[2;0H%04d; %04d", pos.dx, pos.dy);
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214
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215 // Flush and swap framebuffers
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216 gfxFlushBuffers();
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217 gfxSwapBuffers();
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218
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219 //Wait for VBlank
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220 gspWaitForVBlank();
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221 }
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222
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223 // Exit services
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224 gfxExit();
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225 return 0;
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226 }