1 | //============================================
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2 | // Functions:
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3 | //============================================
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4 | void vs1011_init (void);
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5 | void delay_ms (uint16_t xTime);
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6 |
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7 | void vs1011_sine_test(uint8_t loops);
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8 | //============================================
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9 |
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10 | int main(void) {
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11 |
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12 | //init control/data port/pins
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13 | VS1011_DDR = (1<<xRESET) | (1<<xCS) | (1<<xDCS); // DREQ = input
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14 |
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15 |
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16 | delay_ms(200);
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17 |
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18 |
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19 | //init SPI
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20 | SPI_Initialize();
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21 |
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22 | delay_ms(100);
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23 |
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24 | //Init VS1011
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25 | vs1011_init();
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26 |
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27 | delay_ms(100);
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28 |
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29 | vs1011_sine_test(10);
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30 |
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31 |
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32 | while(1){asm volatile("nop");}
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33 | return 0;
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34 | }
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35 |
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36 |
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37 |
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38 | //*************************************************************************
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39 | // Function: delay_ms
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40 | // Parameters: Delay in milliseconds
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41 | // Returns: none
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42 | //
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43 | // Description: Delays n milliseconds
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44 | //*************************************************************************
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45 | void delay_ms(uint16_t xDelay){
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46 | while(xDelay != 1){
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47 | _delay_ms(1);
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48 | xTime--;
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49 | }
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50 | }
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51 |
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52 |
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53 |
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54 |
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55 |
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56 | //*************************************************************************
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57 | // Function: vs1011_init
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58 | // Parameters: none
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59 | // Returns: none
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60 | //
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61 | // Description: Initialize the VS1011 with some settings
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62 | //*************************************************************************
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63 | void vs1011_init(void){
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64 |
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65 | //deactivate xCD and xDC
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66 | //sbi(VS1011_PORT, xCS);
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67 | //sbi(VS1011_PORT, xDCS);
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68 |
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69 |
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70 | //-----------------------------------
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71 | // HW-Reset
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72 | //-----------------------------------
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73 | // clear xreset pin -> hardware reset
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74 | cbi(VS1011_PORT, xRESET);
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75 | delay_ms(10);
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76 | // set xreset pin -> vs1011 will go out of hardware reset state
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77 | sbi(VS1011_PORT, xRESET);
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78 | //-----------------------------------
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79 |
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80 |
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81 | // wait until DREQ goes high
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82 | loop_until_bit_is_set(VS1011_PIN, DREQ);
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83 |
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84 |
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85 | delay_ms(100);
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86 |
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87 |
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88 | //-----------------------------------
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89 | // Set Mode - 1002 native mode
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90 | //-----------------------------------
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91 | sbi(VS1011_PORT, xDCS); //xDCS disable
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92 | cbi(VS1011_PORT, xCS); //xCS enable
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93 |
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94 | delay_ms(10);
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95 |
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96 | SPI_Send_Byte(VS1011_WRITE); //write data
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97 | SPI_Send_Byte(VS1011_MODE);
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98 | SPI_Send_Byte(0x08); //SM_SDINEW + SM_TESTS
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99 | SPI_Send_Byte(0x20); //
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100 |
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101 | sbi(VS1011_PORT, xCS); //xCS disable
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102 | //-----------------------------------
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103 | }
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104 |
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105 |
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106 |
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107 |
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108 |
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109 | //*************************************************************************
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110 | // Function: vs1011_sine_test
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111 | // Parameters: Number of beeps to play
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112 | // Returns: none.
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113 | //
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114 | // Description: Play sine wave beeps on VS1011
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115 | //*************************************************************************
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116 | void vs1011_sine_test(uint8_t loops){
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117 |
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118 | uint8_t ES[8] = {0x53, 0xEF, 0x6E, 0x7E, 0x00, 0x00, 0x00, 0x00};
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119 | //uint8_t DS[4] = {0x45, 0x78, 0x69, 0x74};
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120 |
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121 |
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122 | //-----------------------------------
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123 | // Set Mode - Sine test
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124 | //-----------------------------------
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125 | sbi(VS1011_PORT, xDCS); //xDCS disable
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126 | cbi(VS1011_PORT, xCS); //xCS enable
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127 |
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128 | delay_ms(50);
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129 |
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130 | SPI_Send_Byte(VS1011_WRITE); //write data
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131 | SPI_Send_Byte(VS1011_MODE);
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132 | SPI_Send_Byte(0x08); //SM_SDINEW + SM_TESTS
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133 | SPI_Send_Byte(0x20); //
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134 |
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135 | delay_ms(50);
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136 |
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137 | sbi(VS1011_PORT, xCS); //xCS disable
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138 | //-----------------------------------
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139 |
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140 | delay_ms(50);
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141 |
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142 | cbi(VS1011_PORT, xDCS);
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143 |
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144 | //for(uint8_t x=0; x<loops; x++){
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145 |
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146 |
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147 | for (uint8_t i=0; i<8; i++){
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148 | SPI_Send_Byte( ES[i] );
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149 | }
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150 |
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151 |
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152 | /*
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153 | delay_ms(500);
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154 |
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155 |
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156 | for (uint8_t a=0; a<4; a++){
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157 | SPI_Send_Byte( DS[a] );
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158 | }
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159 |
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160 | delay_ms(500);
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161 |
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162 | }
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163 | */
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164 |
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165 | //sbi(VS1011_PORT, xDCS);
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166 |
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167 | }
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