MITO 8M Mini SOM/MITO 8M Mini Evaluation Kit/Interfaces and Connectors/GPIOs
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| History | |||
|---|---|---|---|
| Version | Issue Date | Notes | |
| 1.0.0 | Apr 2022 | First release | |
Contents
GPIOsEdit
DescriptionEdit
i.MX8M Mini can handle external pins in many different ways and most of them can be configured as GPIOs. When a pin is set as a GPIO, it is possible to read its value, change its direction or change output value directly from the shell.
SignalsEdit
The following table describes some GPIOs signals available on J33 WIDE™ connector:
| Pin# | SOM Pin# | Pin name | GPIO index | Alternate function |
|---|---|---|---|---|
| 1 | J10.134 | LCD_B0 | GPIO2_IO11 | SD1_STROBE |
| 2 | J10.179 | EIM_D20 | GPIO5_IO9 | ECSPI1_SS0 |
| 3 | J10.136 | LCD_B1 | GPIO3_IO5 | |
| 4 | J10.181 | EIM_D21 | GPIO5_IO6 | ECSPI1_SCLK |
| 5 | J10.138 | LCD_B2 | GPIO2_IO2 | SD1_DATA0 |
| 6 | J10.183 | EIM_D22 | GPIO5_IO8 | ECSPI1_MISO |
| 7 | J10.140 | LCD_B3 | GPIO2_IO3 | SD1_DATA1 |
| 8 | J10.195 | EIM_D28 | GPIO5_IO7 | ECSPI1_MOSI |
| 9 | J10.142 | LCD_B4 | GPIO2_IO4 | SD1_DATA2 |
| 11 | J10.144 | LCD_B5 | GPIO2_IO5 | SD1_DATA3 |
| 13 | J10.148 | LCD_B6 | GPIO2_IO6 | SD1_DATA4 |
| 15 | J10.150 | LCD_B7 | GPIO2_IO7 | SD1_DATA5 |
| 17 | J10.152 | LCD_G0 | GPIO2_IO8 | SD1_DATA6 |
| 18 | J10.38 | GPIO_5 | GPIO5_IO18 | I2C3_SCL |
| 19 | J10.154 | LCD_G1 | GPIO2_IO9 | SD1_DATA7 |
| 20 | J10.48 | GPIO_16 | GPIO5_IO19 | I2C3_SDA |
| 21 | J10.156 | LCD_G2 | GPIO3_IO15 | |
| 23 | J10.158 | LCD_G3 | GPIO3_IO16 | |
| 24 | J10.46 | GPIO_9 | GPIO5_IO2 | PWM4 |
| 25 | J10.160 | LCD_G4 | GPIO3_IO17 | |
| 26 | J10.28 | GPIO_1 | GPIO1_IO02 | |
| 27 | J10.162 | LCD_G5 | GPIO3_IO18 | |
| 28 | J10.191 | EIM_D26 | GPIO5_IO29 | UART4_TXD |
| 29 | J10.166 | LCD_G6 | GPIO1_IO15 | |
| 30 | J10.193 | EIM_D27 | GPIO5_IO28 | UART4_RXD |
| 31 | J10.168 | LCD_G7 | GPIO1_IO07 | |
| 32 | J10.50 | GPIO_17 | GPIO5_IO0 | |
| 33 | J10.170 | LCD_R0 | GPIO4_IO16 | |
| 34 | J10.40 | GPIO_6/I2C3_SDA | GPIO4_IO31 | |
| 35 | J10.172 | LCD_R1 | GPIO4_IO17 | |
| 37 | J10.174 | LCD_R2 | GPIO4_IO18 | |
| 39 | J10.176 | LCD_R3 | GPIO4_IO19 | |
| 41 | J10.178 | LCD_R4 | GPIO4_IO9 | |
| 43 | J10.180 | LCD_R5 | GPIO4_IO8 | |
| 45 | J10.182 | LCD_R6 | GPIO4_IO7 | |
| 47 | J10.184 | LCD_R7 | GPIO4_IO6 | |
| 49 | J10.124 | LCD_DV | GPIO3_IO14 | |
| 51 | J10.126 | LCD_AUX_PIN | GPIO3_IO0 | |
| 53 | J10.128 | LCD_VSYNC | GPIO2_IO0 | SD1_CLK |
| 55 | J10.130 | LCD_HSYNC | GPIO2_IO10 | SD1_CMD |
| 57 | J10.132 | LCD_PIXEL_CLK | GPIO2_IO11 | SD1_RESET |
Device mappingEdit
GPIOs can be used directly on Linux kernel device driver or can be configured on the device tree.
Device usageEdit
See the GPIOs page on the DESK-MX8M-L Software Manual.