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                    products:sbc:common:applications:gpio:spi [2023/02/14 07:17] hyphop [Introduction]  | 
                
                    products:sbc:common:applications:gpio:spi [2025/02/17 21:40] (current) nick [Enable SPI]  | 
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| - | ====== SPI ====== | ||
| - | ===== Introduction ===== | ||
| - | SPI interface usage example [[/ | + | ===== SPI Reference table ===== | 
| - | + | |            | |
| - | ===== Reference table ===== | + | ^  VIM3/ | 
| - | + | | :::       | :::      | |
| - | |            | + | | :::       | :::      | 
| - | ^  VIM3/ | + | | :::       | :::      | 
| - | | :::       | :::      | + | ^  VIM4      | 
| - | | :::       | :::      | + | | :::       | :::      | 
| - | | :::       | :::      | + | | :::       | :::      | 
| - | ^  VIM4      | + | | :::       | :::      | 
| - | | :::       | :::      | + | ^  VIM1S    |  SPI_A  |  29  |  SPI_A_MOSI  | 
| - | | :::       | :::      | + | | :::       | :::      | 
| - | | :::       | :::      | + | | :::       | :::      | 
| - | ^  VIM1S    |  SPI_A  |  29  |  SPI_A_MOSI  | + | | :::       | :::      | 
| - | | :::        | + | |
| - | | :::        | + | |
| - | | :::        | + | |
| ===== Enable SPI ===== | ===== Enable SPI ===== | ||
| Line 45: | Line 40: | ||
| $ ls / | $ ls / | ||
| / | / | ||
| + | ``` | ||
| + | |||
| + | <tabbox VIM3 with 5.15 kernel> | ||
| + | |||
| + | Edit ''/ | ||
| + | |||
| + | |||
| + | e.g. Enable '' | ||
| + | |||
| + | ```shell | ||
| + | fdt_overlays=spi1 | ||
| + | ``` | ||
| + | |||
| + | After reboot, you will see the SPI device node. | ||
| + | |||
| + | ```shell | ||
| + | $ ls / | ||
| + | / | ||
| + | ``` | ||
| + | |||
| + | <tabbox VIM3L with 5.15 kernel> | ||
| + | |||
| + | Edit ''/ | ||
| + | |||
| + | |||
| + | e.g. Enable '' | ||
| + | |||
| + | ```shell | ||
| + | fdt_overlays=spi1 | ||
| + | |||
| + | ``` | ||
| + | |||
| + | After reboot, you will see the SPI device node. | ||
| + | |||
| + | ```shell | ||
| + | $ ls / | ||
| + | / | ||
| ``` | ``` | ||
| Line 126: | Line 158: | ||
| } | } | ||
| - | static const char *device = "/ | + | static const char *device = "/ | 
| static uint32_t mode; | static uint32_t mode; | ||
| static uint8_t bits = 8; | static uint8_t bits = 8; | ||
| Line 589: | Line 621: | ||
| ``` | ``` | ||
| - | Run '' | + | Connect PIN36(MOSI), | 
| + | |||
| ```shell | ```shell | ||
| - | $ ./ | + | $ ./ | 
| spi mode: 0x0 | spi mode: 0x0 | ||
| bits per word: 8 | bits per word: 8 | ||
| max speed: 500000 Hz (500 KHz) | max speed: 500000 Hz (500 KHz) | ||
| ``` | ``` | ||
| + | |||
| + | <WRAP important > | ||
| + | Please choose the correct spi device node. | ||
| + | </ | ||
| + | |||
| Check output data: | Check output data: | ||