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Fix FREESCALE_EDMA_NBYTES_MLOFFYES_MLOFF() so it works with negative offsets.
author vae
date Wed, 29 Apr 2015 23:31:48 +0000
parents 74dbf4c3f2e1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 //==========================================================================
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2 //
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3 // io.c
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4 //
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5 // Linux I/O support for Cirrus Logic EDB7xxx eval board tools
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6 //
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7 //==========================================================================
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8 // ####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later
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16 // version.
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17 //
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18 // eCos is distributed in the hope that it will be useful, but WITHOUT
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19 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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20 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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21 // for more details.
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22 //
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23 // You should have received a copy of the GNU General Public License
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24 // along with eCos; if not, write to the Free Software Foundation, Inc.,
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25 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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26 //
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27 // As a special exception, if other files instantiate templates or use
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28 // macros or inline functions from this file, or you compile this file
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29 // and link it with other works to produce a work based on this file,
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30 // this file does not by itself cause the resulting work to be covered by
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31 // the GNU General Public License. However the source code for this file
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32 // must still be made available in accordance with section (3) of the GNU
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33 // General Public License v2.
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34 //
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35 // This exception does not invalidate any other reasons why a work based
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36 // on this file might be covered by the GNU General Public License.
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37 // -------------------------------------------
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38 // ####ECOSGPLCOPYRIGHTEND####
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39 //==========================================================================
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40 //#####DESCRIPTIONBEGIN####
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41 //
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42 // Author(s): gthomas
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43 // Contributors: gthomas
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44 // Date: 1999-06-16
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45 // Description: Linux I/O support for Cirrus Logic EDB7xxx FLASH tools
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46 //####DESCRIPTIONEND####
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47
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48 //
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49 // io.c - I/O functions
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50 //
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51
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52 #include <stdio.h>
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53 #include <sys/ioctl.h>
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54 #include <fcntl.h>
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55 #include <termios.h>
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56 #include <errno.h>
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57
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58 char _ReceiveChar(long port)
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59 {
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60 char buf;
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61 int res;
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62 // Port is in non-blocking mode, this needs to have a loop
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63 do {
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64 res = read(port, &buf, 1);
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65 } while (res < 0);
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66 // printf("Read: %c\n", buf);
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67 return buf;
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68 }
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69
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70 static void
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71 uspin(int len)
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72 {
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73 volatile int cnt;
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74 while (--len >= 0) {
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75 for (cnt = 1; cnt < 2000; cnt++) ;
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76 }
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77 }
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78
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79 void _SendChar(long port, char ch)
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80 {
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81 char buf = ch;
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82 write(port, &buf, 1);
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83 // printf("Send: %x\n", ch);
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84 // usleep(100);
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85 uspin(100);
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86 }
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87
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88 void _SetBaud(long port, long reqRate)
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89 {
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90 struct termios buf;
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91 int rate;
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92
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93 // Get original configuration
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94 if (tcgetattr(port, &buf)) {
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95 fprintf(stderr, "Can't get port config\n");
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96 return;
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97 }
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98
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99 // Reset to raw.
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100 buf.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
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101 |INLCR|IGNCR|ICRNL|IXON);
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102 buf.c_oflag &= ~OPOST;
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103 buf.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
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104 buf.c_cflag &= ~(CSIZE|PARENB);
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105 buf.c_cflag |= CS8;
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106
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107 // Set baud rate.
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108 switch (reqRate) {
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109 case 9600:
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110 rate = B9600;
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111 break;
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112 case 38400:
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113 rate = B38400;
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114 break;
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115 case 57600:
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116 rate = B57600;
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117 break;
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118 case 115200:
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119 rate = B115200;
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120 break;
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121 }
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122 cfsetispeed(&buf, rate);
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123 cfsetospeed(&buf, rate);
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124
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125 // Set data bits.
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126 buf.c_cflag &= ~CSIZE;
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127 buf.c_cflag |= CS8;
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128
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129 // Set stop bits.
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130 buf.c_cflag &= ~CSTOPB; // One stop
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131
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132 // Set parity.
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133 buf.c_cflag &= ~(PARENB | PARODD); // no parity.
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134
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135 // Set the new settings
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136 if (tcsetattr(port, TCSADRAIN, &buf)) {
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137 fprintf(stderr, "Error: tcsetattr\n");
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138 return;
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139 }
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140
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141 tcdrain(port);
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142 usleep(1000000/10*2);
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143 sleep(2);
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144 }
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145
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146 int _CharReady(long port)
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147 {
169
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148 #ifdef __CYGWIN__
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149 // Windows doesn't support the below ioctl
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150 return 1;
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151 #else
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152 int n, res;
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153 res = ioctl(port, FIONREAD, &n);
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154 if (res < 0) {
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155 fprintf(stderr, "I/O error: %s\n", strerror(errno));
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156 exit(1);
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157 }
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158 return n; // Non-zero if characters ready to read
169
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159 #endif
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160 }
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161
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162 void _WaitForOutputEmpty(long port)
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163 {
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164 usleep(2000000);
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165 }
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166
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167 long _OpenPort(char *name)
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168 {
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169 int fd;
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170 fd = open(name, O_RDWR|O_NONBLOCK);
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171 return fd;
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172 }