nikkoaki Posted March 31, 2020 Share Posted March 31, 2020 Greetings, I'm not good with linux so excuse any stupidity i might say. I have been using Xenial for years now and just decided to update. In the past i was using the sunxi module to access gpio's For ex: echo 1 > /sys/class/gpio_sw/PA7/data Now in Bionic i just noticed gpio's are not accessed in the same way. According to this user, we can either use sysFS (which seems deprecated) or libgpiod. The problem is that i can't make it work. libgpiod: root@orangepi:~# gpioset gpiochip0 29=1 gpioset: error setting the GPIO line values: Unknown error 517 sysFS: root@orangepi:~# echo "29" >/sys/class/gpio/export -bash: echo: write error: Unknown error 517 root@orangepi:~# gpioinfo gpiochip1 gpiochip1 - 32 lines: line 0: unnamed unused input active-high line 1: unnamed unused input active-high line 2: unnamed "usb0-vbus" output active-high [used] line 3: unnamed "sw4" input active-low [used] line 4: unnamed unused input active-high line 5: unnamed unused input active-high line 6: unnamed unused input active-high line 7: unnamed unused input active-high line 8: unnamed unused input active-high line 9: unnamed unused input active-high line 10: unnamed "orangepi:green:pwr" output active-high [used] line 11: unnamed unused input active-high line 12: unnamed unused input active-high line 13: unnamed unused input active-high line 14: unnamed unused input active-high line 15: unnamed unused input active-high line 16: unnamed unused input active-high line 17: unnamed unused input active-high line 18: unnamed unused input active-high line 19: unnamed unused input active-high line 20: unnamed unused input active-high line 21: unnamed unused input active-high line 22: unnamed unused input active-high line 23: unnamed unused input active-high line 24: unnamed unused input active-high line 25: unnamed unused input active-high line 26: unnamed unused input active-high line 27: unnamed unused input active-high line 28: unnamed unused input active-high line 29: unnamed unused input active-high line 30: unnamed unused input active-high line 31: unnamed unused input active-high root@orangepi:~# gpioinfo gpiochip0 gpiochip0 - 224 lines: line 0: unnamed unused input active-high line 1: unnamed unused input active-high line 2: unnamed unused input active-high line 3: unnamed unused input active-high line 4: unnamed unused input active-high line 5: unnamed unused input active-high line 6: unnamed unused input active-high line 7: unnamed unused input active-high line 8: unnamed unused input active-high line 9: unnamed unused input active-high line 10: unnamed unused input active-high line 11: unnamed unused input active-high line 12: unnamed unused input active-high line 13: unnamed unused input active-high line 14: unnamed unused input active-high line 15: unnamed "orangepi:red:status" output active-high [used] line 16: unnamed unused input active-high line 17: unnamed unused input active-high line 18: unnamed unused input active-high line 19: unnamed unused input active-high line 20: unnamed unused input active-high line 21: unnamed unused input active-high line 22: unnamed unused input active-high line 23: unnamed unused input active-high line 24: unnamed unused input active-high line 25: unnamed unused input active-high line 26: unnamed unused input active-high line 27: unnamed unused input active-high line 28: unnamed unused input active-high line 29: unnamed unused input active-high line 30: unnamed unused input active-high line 31: unnamed unused input active-high line 32: unnamed unused input active-high line 33: unnamed unused input active-high line 34: unnamed unused input active-high line 35: unnamed unused input active-high line 36: unnamed unused input active-high line 37: unnamed unused input active-high line 38: unnamed unused input active-high line 39: unnamed unused input active-high line 40: unnamed unused input active-high line 41: unnamed unused input active-high line 42: unnamed unused input active-high line 43: unnamed unused input active-high line 44: unnamed unused input active-high line 45: unnamed unused input active-high line 46: unnamed unused input active-high line 47: unnamed unused input active-high line 48: unnamed unused input active-high line 49: unnamed unused input active-high line 50: unnamed unused input active-high line 51: unnamed unused input active-high line 52: unnamed unused input active-high line 53: unnamed unused input active-high line 54: unnamed unused input active-high line 55: unnamed unused input active-high line 56: unnamed unused input active-high line 57: unnamed unused input active-high line 58: unnamed unused input active-high line 59: unnamed unused input active-high line 60: unnamed unused input active-high line 61: unnamed unused input active-high line 62: unnamed unused input active-high line 63: unnamed unused input active-high line 64: unnamed unused input active-high line 65: unnamed unused input active-high line 66: unnamed unused input active-high line 67: unnamed unused input active-high line 68: unnamed unused input active-high line 69: unnamed unused input active-high line 70: unnamed unused input active-high line 71: unnamed unused input active-high line 72: unnamed unused input active-high line 73: unnamed unused input active-high line 74: unnamed unused input active-high line 75: unnamed unused input active-high line 76: unnamed unused input active-high line 77: unnamed unused input active-high line 78: unnamed unused input active-high line 79: unnamed unused input active-high line 80: unnamed unused input active-high line 81: unnamed unused input active-high line 82: unnamed unused input active-high line 83: unnamed unused input active-high line 84: unnamed unused input active-high line 85: unnamed unused input active-high line 86: unnamed unused input active-high line 87: unnamed unused input active-high line 88: unnamed unused input active-high line 89: unnamed unused input active-high line 90: unnamed unused input active-high line 91: unnamed unused input active-high line 92: unnamed unused input active-high line 93: unnamed unused input active-high line 94: unnamed unused input active-high line 95: unnamed unused input active-high line 96: unnamed unused input active-high line 97: unnamed unused input active-high line 98: unnamed unused input active-high line 99: unnamed unused input active-high line 100: unnamed unused input active-high line 101: unnamed unused input active-high line 102: unnamed unused input active-high line 103: unnamed unused input active-high line 104: unnamed unused input active-high line 105: unnamed unused input active-high line 106: unnamed unused input active-high line 107: unnamed unused input active-high line 108: unnamed unused input active-high line 109: unnamed unused input active-high line 110: unnamed unused input active-high line 111: unnamed unused input active-high line 112: unnamed unused input active-high line 113: unnamed unused input active-high line 114: unnamed unused input active-high line 115: unnamed unused input active-high line 116: unnamed unused input active-high line 117: unnamed unused input active-high line 118: unnamed unused input active-high line 119: unnamed unused input active-high line 120: unnamed unused input active-high line 121: unnamed unused input active-high line 122: unnamed unused input active-high line 123: unnamed unused input active-high line 124: unnamed unused input active-high line 125: unnamed unused input active-high line 126: unnamed unused input active-high line 127: unnamed unused input active-high line 128: unnamed unused input active-high line 129: unnamed unused input active-high line 130: unnamed unused input active-high line 131: unnamed unused input active-high line 132: unnamed unused input active-high line 133: unnamed unused input active-high line 134: unnamed unused input active-high line 135: unnamed unused input active-high line 136: unnamed unused input active-high line 137: unnamed unused input active-high line 138: unnamed unused input active-high line 139: unnamed unused input active-high line 140: unnamed unused input active-high line 141: unnamed unused input active-high line 142: unnamed unused input active-high line 143: unnamed unused input active-high line 144: unnamed unused input active-high line 145: unnamed unused input active-high line 146: unnamed unused input active-high line 147: unnamed unused input active-high line 148: unnamed unused input active-high line 149: unnamed unused input active-high line 150: unnamed unused input active-high line 151: unnamed unused input active-high line 152: unnamed unused input active-high line 153: unnamed unused input active-high line 154: unnamed unused input active-high line 155: unnamed unused input active-high line 156: unnamed unused input active-high line 157: unnamed unused input active-high line 158: unnamed unused input active-high line 159: unnamed unused input active-high line 160: unnamed unused input active-high line 161: unnamed unused input active-high line 162: unnamed unused input active-high line 163: unnamed unused input active-high line 164: unnamed unused input active-high line 165: unnamed unused input active-high line 166: unnamed "cd" input active-low [used] line 167: unnamed unused input active-high line 168: unnamed unused input active-high line 169: unnamed unused input active-high line 170: unnamed unused input active-high line 171: unnamed unused input active-high line 172: unnamed unused input active-high line 173: unnamed unused input active-high line 174: unnamed unused input active-high line 175: unnamed unused input active-high line 176: unnamed unused input active-high line 177: unnamed unused input active-high line 178: unnamed unused input active-high line 179: unnamed unused input active-high line 180: unnamed unused input active-high line 181: unnamed unused input active-high line 182: unnamed unused input active-high line 183: unnamed unused input active-high line 184: unnamed unused input active-high line 185: unnamed unused input active-high line 186: unnamed unused input active-high line 187: unnamed unused input active-high line 188: unnamed unused input active-high line 189: unnamed unused input active-high line 190: unnamed unused input active-high line 191: unnamed unused input active-high line 192: unnamed unused input active-high line 193: unnamed unused input active-high line 194: unnamed unused input active-high line 195: unnamed unused input active-high line 196: unnamed unused input active-high line 197: unnamed unused input active-high line 198: unnamed unused input active-high line 199: unnamed unused input active-high line 200: unnamed unused input active-high line 201: unnamed unused input active-high line 202: unnamed unused input active-high line 203: unnamed unused input active-high line 204: unnamed "usb0_id_det" input active-high [used] line 205: unnamed unused input active-high line 206: unnamed unused input active-high line 207: unnamed unused input active-high line 208: unnamed unused input active-high line 209: unnamed unused input active-high line 210: unnamed unused input active-high line 211: unnamed unused input active-high line 212: unnamed unused input active-high line 213: unnamed unused input active-high line 214: unnamed unused input active-high line 215: unnamed unused input active-high line 216: unnamed unused input active-high line 217: unnamed unused input active-high line 218: unnamed unused input active-high line 219: unnamed unused input active-high line 220: unnamed unused input active-high line 221: unnamed unused input active-high line 222: unnamed unused input active-high line 223: unnamed unused input active-high What am i doing wrong? It's a clean install of Bionic server. I would prefer to use libgpiod since it looks less complex Can anyone point me in the right direction? Thanks a a lot. Link to comment Share on other sites More sharing options...
nikkoaki Posted March 31, 2020 Author Share Posted March 31, 2020 Bah, forget my previous port. I thought pin PA7 was pin 29 (which is, physically), but it's actually pin 7. Everything works fine. Link to comment Share on other sites More sharing options...
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