香橙派Zero2 IO识记
研究一番发现官方没有现成的单总线驱动可用,必须得自己写一个驱动驱动单线设备。
+------+-----+----------+------+---+ Zero 2 +---+------+----------+-----+------+
| GPIO | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | GPIO |
+------+-----+----------+------+---+----++----+---+------+----------+-----+------+
| | | 3.3V | | | 1 || 2 | | | 5V | | |
| 229 | 0 | SDA.3 | OUT | 1 | 3 || 4 | | | 5V | | |
| 228 | 1 | SCL.3 | OUT | 1 | 5 || 6 | | | GND | | |
| 73 | 2 | PC9 | OUT | 1 | 7 || 8 | 1 | OUT | TXD.5 | 3 | 226 |
| | | GND | | | 9 || 10 | 1 | OUT | RXD.5 | 4 | 227 |
| 70 | 5 | PC6 | OUT | 1 | 11 || 12 | 1 | OUT | PC11 | 6 | 75 |
| 69 | 7 | PC5 | OUT | 1 | 13 || 14 | | | GND | | |
| 72 | 8 | PC8 | OUT | 1 | 15 || 16 | 1 | OUT | PC15 | 9 | 79 |
| | | 3.3V | | | 17 || 18 | 1 | OUT | PC14 | 10 | 78 |
| 231 | 11 | MOSI.1 | OUT | 1 | 19 || 20 | | | GND | | |
| 232 | 12 | MISO.1 | OUT | 1 | 21 || 22 | 1 | OUT | PC7 | 13 | 71 |
| 230 | 14 | SCLK.1 | OUT | 1 | 23 || 24 | 1 | OUT | CE.1 | 15 | 233 |
| | | GND | | | 25 || 26 | 1 | OUT | PC10 | 16 | 74 |
| 65 | 17 | PC1 | OUT | 1 | 27 || 28 | | | | | |
| 272 | 18 | PI16 | OUT | 1 | 29 || 30 | | | | | |
| 262 | 19 | PI6 | OUT | 1 | 31 || 32 | | | | | |
| 234 | 20 | PH10 | ALT3 | 0 | 33 || 34 | | | | | |
+------+-----+----------+------+---+----++----+---+------+----------+-----+------+
| GPIO | wPi | Name | Mode | V | Physical | V | Mode | Name | wPi | GPIO |
+------+-----+----------+------+---+ Zero 2 +---+------+----------+-----+------+
端口占用情况:
已占用:
PC1,pin PC1 already requested by onewire@0; cannot claim for 300b000.pinctrl:65
PC5,pin PC5 already requested by onewire@0; cannot claim for 300b000.pinctrl:69
PC9,pin PC9 already requested by onewire@0; cannot claim for 300b000.pinctrl:73
PC6, pin PC6 already requested by onewire@0; cannot claim for 300b000.pinctrl:70
PC8,pin PC8 already requested by onewire@0; cannot claim for 300b000.pinctrl:72
PC10,pin PC10 already requested by onewire@0; cannot claim for 300b000.pinctrl:74
PC11,pin PC11 already requested by onewire@0; cannot claim for 300b000.pinctrl:75
PC12,PC13是两个板载LED
PH3,w1-gpio onewire@0: gpio_request (pin) failed