1 | #include "Os.h"
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2 | #include "t_stdlib.h"
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3 | #include "prc_sil.h"
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4 | #include "comuart.h"
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5 |
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6 | /*
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7 | * WX^ItZbg
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8 | */
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9 | #define UART_RXDATA_OFFSET UINT_C(0x00)
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10 | #define UART_TXDATA_OFFSET UINT_C(0x04)
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11 | #define UART_STATUS_OFFSET UINT_C(0x08)
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12 | #define UART_CONTROL_OFFSET UINT_C(0x0c)
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13 | #define UART_DIVISOR_OFFSET UINT_C(0x10)
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14 |
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15 | /*
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16 | * WX^rbgè`
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17 | */
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18 | #define UART_STATUS_TRDY UINT_C(0x0040)
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19 | #define UART_STATUS_RRDY UINT_C(0x0080)
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20 |
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21 | #define UART_CONTROL_ITRDY UINT_C(0x0040)
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22 | #define UART_CONTROL_IRRDY UINT_C(0x0080)
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23 |
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24 | /*
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25 | * UART
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26 | */
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27 | #define RxBUFF_SIZE 256
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28 | #define TxBUFF_SIZE 256
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29 |
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30 | static uint8 s_rxbuff[RxBUFF_SIZE];
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31 | static uint8 s_txbuff[TxBUFF_SIZE];
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32 |
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33 | static int s_rxbuff_tail;
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34 | static int s_rxbuff_head;
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35 | static int s_rxbuff_cnt;
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36 | static int s_txbuff_tail;
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37 | static int s_txbuff_head;
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38 | static int s_txbuff_cnt;
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39 |
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40 | static boolean s_do_tx;
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41 |
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42 |
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43 | static void
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44 | ena_rx_int(void){
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45 | sil_wrw_iop((void *) (COMUART_BASE + UART_CONTROL_OFFSET),
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46 | sil_rew_iop((void *) (COMUART_BASE + UART_CONTROL_OFFSET))
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47 | | UART_CONTROL_IRRDY);
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48 | }
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49 |
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50 | static void
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51 | dis_rx_int(void){
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52 | sil_wrw_iop((void *) (COMUART_BASE + UART_CONTROL_OFFSET),
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53 | sil_rew_iop((void *) (COMUART_BASE + UART_CONTROL_OFFSET))
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54 | & ~UART_CONTROL_IRRDY);
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55 | }
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56 |
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57 | static void
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58 | ena_tx_int(void){
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59 | sil_wrw_iop((void *) (COMUART_BASE + UART_CONTROL_OFFSET),
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60 | sil_rew_iop((void *) (COMUART_BASE + UART_CONTROL_OFFSET))
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61 | | UART_CONTROL_ITRDY);
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62 | }
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63 |
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64 | static void
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65 | dis_tx_int(void){
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66 | sil_wrw_iop((void *) (COMUART_BASE + UART_CONTROL_OFFSET),
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67 | sil_rew_iop((void *) (COMUART_BASE + UART_CONTROL_OFFSET))
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68 | & ~UART_CONTROL_ITRDY);
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69 | }
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70 |
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71 | static void
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72 | comuart_putc(unsigned char c){
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73 | sil_wrw_iop((void *) (COMUART_BASE + UART_TXDATA_OFFSET), (uint32) c);
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74 | }
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75 |
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76 | static unsigned char
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77 | comuart_getc(void){
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78 | return((uint8) sil_rew_iop((void *) (COMUART_BASE + UART_RXDATA_OFFSET)));
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79 | }
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80 |
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81 | static boolean
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82 | comuart_getready(void)
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83 | {
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84 | return((sil_rew_iop((void *) (COMUART_BASE + UART_STATUS_OFFSET)) & UART_STATUS_RRDY) != 0U);
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85 | }
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86 |
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87 | static boolean
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88 | comuart_putready(void)
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89 | {
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90 | return((sil_rew_iop((void *) (COMUART_BASE + UART_STATUS_OFFSET)) & UART_STATUS_TRDY) != 0U);
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91 | }
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92 |
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93 | void
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94 | comuart_pputc(unsigned char c){
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95 | while(!(comuart_putready())){}
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96 | comuart_putc(c);
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97 | }
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98 |
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99 | /*
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100 | * ú»
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101 | */
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102 | void
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103 | comuart_init(void)
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104 | {
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105 | /*
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106 | * óMÝÂ
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107 | */
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108 | ena_rx_int();
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109 | }
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110 |
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111 |
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112 | /*
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113 | * óMµ½f[^·
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114 | */
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115 | int
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116 | comuart_get_rxcnt(void)
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117 | {
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118 | return s_rxbuff_cnt;
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119 | }
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120 |
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121 | /*
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122 | * óM
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123 | */
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124 | boolean
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125 | comuart_receive(unsigned char *data, int len)
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126 | {
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127 | boolean result = TRUE;
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128 | int loop;
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129 |
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130 | SuspendOSInterrupts();
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131 | if (s_rxbuff_cnt < len) {
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132 | result = FALSE;
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133 | }else {
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134 | for(loop = 0; loop < len; loop++) {
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135 | *data++ = s_rxbuff[s_rxbuff_head++];
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136 | s_rxbuff_head = s_rxbuff_head % RxBUFF_SIZE;
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137 | s_rxbuff_cnt--;
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138 | }
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139 | }
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140 | ResumeOSInterrupts();
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141 |
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142 | return result;
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143 | }
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144 |
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145 | /*
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146 | * M
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147 | */
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148 | boolean
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149 | comuart_send(const unsigned char *data, int len)
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150 | {
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151 | int loop;
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152 | char c;
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153 |
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154 | /* 󫪳¯êÎG[ */
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155 | if (s_txbuff_cnt + len > TxBUFF_SIZE) {
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156 | return FALSE;
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157 | }
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158 |
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159 | /* Oobt@ÉRs[ */
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160 | for(loop = 0; loop < len; loop++){
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161 | s_txbuff[s_txbuff_tail++] = *data++;
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162 | s_txbuff_tail = s_txbuff_tail % TxBUFF_SIZE;
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163 | s_txbuff_cnt++;
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164 | }
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165 |
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166 | if (!(s_do_tx)) {
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167 | SuspendOSInterrupts();
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168 | /* Oobt@©çæèoµM */
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169 | c = s_txbuff[s_txbuff_head++];
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170 | s_txbuff_head = s_txbuff_head % TxBUFF_SIZE;
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171 | s_txbuff_cnt--;
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172 | s_do_tx = TRUE;
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173 | comuart_putc(c);
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174 | ResumeOSInterrupts();
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175 |
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176 | /* óMÝÂ */
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177 | if(s_txbuff_cnt > 0){
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178 | ena_tx_int();
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179 | }
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180 | }
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181 |
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182 | return TRUE;
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183 | }
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184 |
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185 | /*
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186 | * UART2Ýnh
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187 | */
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188 | #define TASK_NONE 0xFFFFFFFF
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189 | static TaskType COMUartWaitTask = TASK_NONE;
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190 |
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191 | /*
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192 | * Ýnh
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193 | */
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194 | ISR(COMUART_Interrupt)
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195 | {
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196 | char c;
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197 |
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198 | if (comuart_putready() != FALSE) {
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199 | /* M */
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200 | if (s_txbuff_cnt == 0) {
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201 | /* obt@ªó */
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202 | s_do_tx = FALSE;
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203 | dis_tx_int();
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204 | }
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205 | else {
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206 | /* obt@©çf[^ðæèoµoÍ */
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207 | c = s_txbuff[s_txbuff_head++];
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208 | s_txbuff_head = s_txbuff_head % TxBUFF_SIZE;
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209 | s_txbuff_cnt--;
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210 | comuart_putc(c);
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211 | s_do_tx = TRUE;
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212 | }
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213 | }
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214 |
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215 | if (comuart_getready() != FALSE) {
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216 | /* óM */
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217 | c = comuart_getc();
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218 |
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219 | if (s_rxbuff_cnt < RxBUFF_SIZE) {
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220 | s_rxbuff[s_rxbuff_tail++] = c;
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221 | s_rxbuff_tail = s_rxbuff_tail % RxBUFF_SIZE;
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222 | s_rxbuff_cnt++;
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223 | }
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224 | else {
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225 | com_error();
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226 | }
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227 |
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228 | if (COMUartWaitTask != TASK_NONE) {
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229 | SetEvent(COMUartWaitTask, COMUartEvt);
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230 | }
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231 | }
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232 | }
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233 |
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234 | /*
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235 | * UARTE2ÌCxgÒ¿
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236 | */
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237 | void
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238 | WaitCOMUartEvent(void) {
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239 |
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240 | TaskType task_id;
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241 | GetTaskID(&task_id);
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242 |
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243 | COMUartWaitTask = task_id;
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244 | if(comuart_get_rxcnt() == 0) {
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245 | WaitEvent(COMUartEvt);
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246 | ClearEvent(COMUartEvt);
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247 | }
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248 | COMUartWaitTask = TASK_NONE;
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249 | }
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