Hello,
Recently I have started working with BBB. I have one doubt that how the controller understands the following:
Suppose I have to make the pin 12 of connector P8 high, than I have to include gpio44 into the gpio library. Why 44 ? How does this get defined …? I struggled with Pin 14 of connector 8. Some literatures suggest that it is GPIO 40 but later on in groups I found that it is GPIO 50 and it worked. In schematic and SRM it is mentioned as GPIO1_18 and like that. Please help.
Regards,
Anup
P8 HEADER | LINUX PIN | ADDR/OFFSET | GPIO NO. | TRM NAME | MODE 7 |
- | - | - | - | - | - |
P8_1 | | | | | |
P8_2 | | | | | |
P8_3 | 6 | 0x818/018 | 38 | GPIO1_6 | gpio1[6] |
P8_4 | 7 | 0x81c/01c | 39 | GPIO1_7 | gpio1[7] |
P8_5 | 2 | 0x808/008 | 34 | GPIO1_2 | gpio1[2] |
P8_6 | 3 | 0x80c/00c | 35 | GPIO1_3 | gpio1[3] |
P8_7 | 36 | 0x890/090 | 66 | TIMER4 | gpio2[2] |
P8_8 | 37 | 0x894/094 | 67 | TIMER7 | gpio2[3] |
P8_9 | 39 | 0x89c/09c | 69 | TIMER5 | gpio2[5] |
P8_10 | 38 | 0x898/098 | 68 | TIMER6 | gpio2[4] |
P8_11 | 13 | 0x834/034 | 45 | GPIO1_13 | gpio1[13] |
P8_12 | 12 | 0x830/030 | 44 | GPIO1_12 | gpio1[12] |
P8_13 | 9 | 0x824/024 | 23 | EHRPWM2B | gpio0[23] |
P8_14 | 10 | 0x828/028 | 26 | GPIO0_26 | gpio0[26] |
P8_15 | 15 | 0x83c/03c | 47 | GPIO1_15 | gpio1[15] |
P8_16 | 14 | 0x838/038 | 46 | GPIO1_14 | gpio1[14] |
P8_17 | 11 | 0x82c/02c | 27 | GPIO0_27 | gpio0[27] |
P8_18 | 35 | 0x88c/08c | 65 | GPIO2_1 | gpio2[1] |
P8_19 | 8 | 0x820/020 | 22 | EHRPWM2A | gpio0[22] |
P8_20 | 33 | 0x884/084 | 63 | GPIO1_31 | gpio1[31] |
P8_21 | 32 | 0x880/080 | 62 | GPIO1_30 | gpio1[30] |
P8_22 | 5 | 0x814/014 | 37 | GPIO1_5 | gpio1[5] |
P8_23 | 4 | 0x810/010 | 36 | GPIO1_4 | gpio1[4] |
P8_24 | 1 | 0x804/004 | 33 | GPIO1_1 | gpio1[1] |
P8_25 | 0 | 0x800/000 | 32 | GPIO1_0 | gpio1[0] |
P8_26 | 31 | 0x87c/07c | 61 | GPIO1_29 | gpio1[29] |
P8_27 | 56 | 0x8e0/0e0 | 86 | GPIO2_22 | gpio2[22] |
P8_28 | 58 | 0x8e8/0e8 | 88 | GPIO2_24 | gpio2[24] |
P8_29 | 57 | 0x8e4/0e4 | 87 | GPIO2_23 | gpio2[23] |
P8_30 | 59 | 0x8ec/0ec | 89 | GPIO2_25 | gpio2[25] |
P8_31 | 54 | 0x8d8/0d8 | 10 | UART5_CTSN | gpio0[10] |
P8_32 | 55 | 0x8dc/0dc | 11 | UART5_RTSN | gpio0[11] |
P8_33 | 53 | 0x8d4/0d4 | 9 | UART4_RTSN | gpio0[9] |
P8_34 | 51 | 0x8cc/0cc | 81 | UART3_RTSN | gpio2[17] |
P8_35 | 52 | 0x8d0/0d0 | 8 | UART4_CTSN | gpio0[8] |
P8_36 | 50 | 0x8c8/0c8 | 80 | UART3_CTSN | gpio2[16] |
P8_37 | 48 | 0x8c0/0c0 | 78 | UART5_TXD | gpio2[14] |
P8_38 | 49 | 0x8c4/0c4 | 79 | UART5_RXD | gpio2[15] |
P8_39 | 46 | 0x8b8/0b8 | 76 | GPIO2_12 | gpio2[12] |
P8_40 | 47 | 0x8bc/0bc | 77 | GPIO2_13 | gpio2[13] |
P8_41 | 44 | 0x8b0/0b0 | 74 | GPIO2_10 | gpio2[10] |
P8_42 | 45 | 0x8b4/0b4 | 75 | GPIO2_11 | gpio2[11] |
P8_43 | 42 | 0x8a8/0a8 | 72 | GPIO2_8 | gpio2[8] |
P8_44 | 43 | 0x8ac/0ac | 73 | GPIO2_9 | gpio2[9] |
P8_45 | 40 | 0x8a0/0a0 | 70 | GPIO2_6 | gpio2[6] |
P8_46 | 41 | 0x8a4/0a4 | 71 | GPIO2_7 | gpio2[7] |
44 is the Linux GPIO number.
Regards,
John
Hello John,
Thank you .
How to find this .?
II want to find this for P9 also, that’s why…?
Please help.
Regards,
Anup
P9 HEADER
|
LINUX PIN
|
ADDR/OFFSET
|
TRM NAME
|
GPIO NO.
|
MODE 7
|
- | - | - | - | - | - |
P9_01
|
|
|
DGND
|
|
|
P9_02
|
|
|
DGND
|
|
|
P9_03
|
|
|
VDD_3V3B
|
|
|
P9_04
|
|
|
VDD_3V3B
|
|
|
P9_05
|
|
|
VDD_5V
|
|
|
P9_06
|
|
|
VDD_5V
|
|
|
P9_07
|
|
|
SYS_5V
|
|
|
P9_08
|
|
|
SYS_5V
|
|
|
P9_09
|
|
|
PWR_BUT
|
|
|
P9_10
|
|
|
SYS_RESETn
|
|
|
P9_11
|
28
|
0x870/070
|
UART4_RXD
|
30
|
gpio0[30]
|
P9_12
|
30
|
0x878/078
|
GPIO1_28
|
60
|
gpio1[28]
|
P9_13
|
29
|
0x874/074
|
UART4_TXD
|
31
|
gpio0[31]
|
P9_14
|
18
|
0x848/048
|
EHRPWM1A
|
50
|
gpio1[18]
|
P9_15A
|
16
|
0x840/040
|
GPIO1_16
|
48
|
gpio1[16]
|
P9_15B
|
34
|
0x888/088
|
GPIO1_16
|
64
|
gpio2(0)
|
P9_16
|
19
|
0x84c/04c
|
EHRPWM1B
|
51
|
gpio1[19]
|
P9_17
|
87
|
0x95c/15c
|
I2C1_SCL
|
5
|
gpio0[5]
|
P9_18
|
86
|
0x958/158
|
I2C1_SDA
|
4
|
gpio0[4]
|
P9_19
|
95
|
0x97c/17c
|
I2C2_SCL
|
13
|
gpio0[13]
|
P9_20
|
94
|
0x978/178
|
I2C2_SDA
|
12
|
gpio0[12]
|
P9_21
|
85
|
0x954/154
|
UART2_TXD
|
3
|
gpio0[3]
|
P9_22
|
84
|
0x950/150
|
UART2_RXD
|
2
|
gpio0[2]
|
P9_23
|
17
|
0x844/044
|
GPIO1_17
|
49
|
gpio1[17]
|
P9_24
|
97
|
0x984/184
|
UART1_TXD
|
15
|
gpio0[15]
|
P9_25A
|
107
|
0x9ac/1ac
|
GPIO3_21
|
117
|
gpio3[21]
|
P9_25B
|
27
|
0x86c/06c
|
GPIO1_27
|
59
|
|
P9_26
|
96
|
0x980/180
|
UART1_RXD
|
14
|
gpio0[14]
|
P9_27
|
105
|
0x9a4/1a4
|
GPIO3_19
|
115
|
gpio3[19]
|
P9_28
|
103
|
0x99c/19c
|
SPI1_CS0
|
113
|
gpio3[17]
|
P9_29
|
101
|
0x994/194
|
SPI1_D0
|
111
|
gpio3[15]
|
P9_30
|
102
|
0x998/198
|
SPI1_D1
|
112
|
gpio3[16]
|
P9_31
|
100
|
0x990/190
|
SPI1_SCLK
|
110
|
gpio3[14]
|
P9_32
|
|
|
VDD_ADC
|
|
|
P9_33
|
|
|
AIN4
|
|
|
P9_34
|
|
|
GNDA_ADC
|
|
|
P9_35
|
|
|
AIN6
|
|
|
P9_36
|
|
|
AIN5
|
|
|
P9_37
|
|
|
AIN2
|
|
|
P9_38
|
|
|
AIN3
|
|
|
P9_39
|
|
|
AIN0
|
|
|
P9_40
|
|
|
AIN1
|
|
|
P9_41A
|
109
|
0x9b4/1b4
|
CLKOUT2
|
20
|
gpio0[20]
|
P9_41B
|
106
|
0x9a8/1a8
|
CLKOUT2
|
116
|
gpio3[20]
|
P9_42A
|
89
|
0x964/164
|
GPIO0_7
|
7
|
gpio0[7]
|
P9_42B
|
104
|
0x9a0/1a0
|
GPIO0_7
|
114
|
gpio3[18]
|
P9_43
|
|
|
DGND
|
|
|
P9_44
|
|
|
DGND
|
|
|
P9_45
|
|
|
DGND
|
|
|
P9_46
|
|
|
DGND
|
|
|
|
|
|
|
|
|
Search Google for BBB Pinmux spreadsheet
Regards,
John