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products:sbc:common:applications:gpio:spi [2022/10/07 23:27] hyphop [Reference table] |
products:sbc:common:applications:gpio:spi [2023/11/07 05:07] (current) nick [Enable SPI] |
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- | ====== SPI ====== | ||
- | SPI interface usage examples on [[products: | + | ===== SPI Reference table ===== |
- | + | ||
- | ===== Reference table ===== | + | |
- | + | ||
- | | | + | |
- | ^ VIM3/ | + | |
- | | ::: | ::: | + | |
- | | ::: | ::: | + | |
- | | ::: | ::: | + | |
- | ^ VIM4 | + | |
+ | | | ||
+ | ^ VIM3/ | ||
+ | | ::: | ::: | ||
+ | | ::: | ::: | ||
+ | | ::: | ::: | ||
+ | ^ VIM4 | ||
+ | | ::: | ::: | ||
+ | | ::: | ::: | ||
+ | | ::: | ::: | ||
+ | ^ VIM1S | SPI_A | 29 | SPI_A_MOSI | ||
+ | | ::: | ::: | ||
+ | | ::: | ::: | ||
+ | | ::: | ::: | ||
===== Enable SPI ===== | ===== Enable SPI ===== | ||
Line 17: | Line 20: | ||
In order to use the SPI, you need to enable the SPI function via [[products: | In order to use the SPI, you need to enable the SPI function via [[products: | ||
- | < | + | < |
Edit ''/ | Edit ''/ | ||
Line 38: | Line 41: | ||
/ | / | ||
``` | ``` | ||
+ | |||
+ | <tabbox VIM3 with 5.15 kernel> | ||
+ | |||
+ | Edit ''/ | ||
+ | |||
+ | |||
+ | e.g. Enable '' | ||
+ | |||
+ | ```shell | ||
+ | fdt_overlays=spi1 | ||
+ | |||
+ | ``` | ||
+ | |||
+ | After reboot, you will see the SPI device node. | ||
+ | |||
+ | <tabbox VIM3L with 5.15 kernel> | ||
+ | |||
+ | Edit ''/ | ||
+ | |||
+ | |||
+ | e.g. Enable '' | ||
+ | |||
+ | ```shell | ||
+ | fdt_overlays=spi1 | ||
+ | |||
+ | ``` | ||
+ | |||
+ | After reboot, you will see the SPI device node. | ||
<tabbox VIM4> | <tabbox VIM4> | ||
- | TODO. | + | Edit ''/ |
- | </ | ||
+ | e.g. Enable '' | ||
+ | |||
+ | ```shell | ||
+ | fdt_overlays=spi0 | ||
+ | |||
+ | ``` | ||
+ | |||
+ | After reboot, you will see the SPI device node. | ||
+ | |||
+ | ```shell | ||
+ | $ ls / | ||
+ | / | ||
+ | ``` | ||
+ | <tabbox VIM1S> | ||
+ | |||
+ | Edit ''/ | ||
+ | |||
+ | |||
+ | e.g. Enable '' | ||
+ | |||
+ | ```shell | ||
+ | fdt_overlays=spi0 | ||
+ | |||
+ | ``` | ||
+ | |||
+ | After reboot, you will see the SPI device node. | ||
+ | |||
+ | ```shell | ||
+ | $ ls / | ||
+ | / | ||
+ | ``` | ||
+ | |||
+ | </ | ||
===== Disable SPI ===== | ===== Disable SPI ===== | ||
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} | } | ||
- | 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 541: | Line 604: | ||
``` | ``` | ||
- | ===== Demonstrate | + | ===== Test demonstration |
- | **Prepare | + | Prepare |
```shell | ```shell | ||
Line 550: | Line 612: | ||
``` | ``` | ||
- | **Run '' | + | Connect PIN36(MOSI), |
```shell | ```shell | ||
Line 559: | Line 621: | ||
``` | ``` | ||
- | **Check output data.** | + | Check output data: |
```shell | ```shell |