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products:sbc:common:applications:gpio:pwm
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products:sbc:common:applications:gpio:pwm [2022/11/04 10:00] nick |
products:sbc:common:applications:gpio:pwm [2023/11/07 03:29] nick |
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| This page introduces the usage of hardware PWM, and leads you to control the hardware PWM on the [[products: | This page introduces the usage of hardware PWM, and leads you to control the hardware PWM on the [[products: | ||
| - | ===== PWM Information | + | ===== PWM Reference Table ===== |
| + | |||
| + | | | ||
| + | ^ VIM1 | ||
| + | ^ VIM2 | ||
| + | ^ VIM3 | ||
| + | ^ VIM3L | '' | ||
| + | ^ VIM4 | ||
| + | ^ VIM1S | '' | ||
| - | | | ||
| - | ^ VIM1 | ||
| - | ^ VIM2 | ||
| - | ^ VIM3/ | ||
| - | ^ VIM4 | ||
| - | ^ VIM1S | PWM_F | ||
| - | ^ Edge2 | PWM14 | ||
| ===== Enable PWM ===== | ===== Enable PWM ===== | ||
| In order to use the PWM, you need to enable the PWM function via [[products: | In order to use the PWM, you need to enable the PWM function via [[products: | ||
| - | <tabbox VIM1/2/3/3L/Edge1> | + | <tabbox VIM1/ |
| Edit ''/ | Edit ''/ | ||
| Line 25: | Line 27: | ||
| ```shell | ```shell | ||
| - | overlays=uart4 pwm_ao_a | + | overlays=uart3 pwm_f i2c3 i2s os08a10 watchdog |
| ``` | ``` | ||
| Line 35: | Line 37: | ||
| ``` | ``` | ||
| - | < | + | < |
| - | Edit ''/ | + | Edit ''/ |
| - | + | Take VIM3L as an example to enable '' | |
| - | You need to add '' | + | |
| ```shell | ```shell | ||
| - | fdt_overlays=pwm_f | + | overlays=uart3 pwm_f i2c3 i2s watchdog |
| ``` | ``` | ||
| Line 50: | Line 50: | ||
| ```shell | ```shell | ||
| - | $ ls / | + | $ ls / |
| device | device | ||
| ``` | ``` | ||
| - | < | + | < |
| - | Edit ''/ | + | Edit ''/ |
| Line 69: | Line 69: | ||
| ```shell | ```shell | ||
| - | $ ls / | + | $ ls / |
| device | device | ||
| ``` | ``` | ||
| - | < | + | < |
| - | Edit ''/ | + | Edit ''/ |
| - | You need to add '' | + | You need to add '' |
| ```shell | ```shell | ||
| - | fdt_overlays=pwm14 | + | fdt_overlays=pwm_f |
| ``` | ``` | ||
| Line 88: | Line 88: | ||
| ```shell | ```shell | ||
| - | $ ls / | + | $ ls / |
| device | device | ||
| ``` | ``` | ||
| - | |||
| </ | </ | ||
| - | ===== Disable PWM to Use GPIO ===== | ||
| - | |||
| - | If you want to use normal GPIO instead of PWM, you can remove the PWM node in [[products: | ||
| ===== Control PWM ===== | ===== Control PWM ===== | ||
| Line 102: | Line 98: | ||
| **Enable PWM:** | **Enable PWM:** | ||
| - | <tabbox VIM1/3/3L/ | + | <tabbox VIM1/ |
| ```shell | ```shell | ||
| Line 110: | Line 106: | ||
| echo 1 | sudo tee / | echo 1 | sudo tee / | ||
| ``` | ``` | ||
| + | |||
| <tabbox VIM2> | <tabbox VIM2> | ||
| Line 119: | Line 116: | ||
| ``` | ``` | ||
| - | < | + | < |
| ```shell | ```shell | ||
| Line 127: | Line 124: | ||
| echo 1 | sudo tee / | echo 1 | sudo tee / | ||
| ``` | ``` | ||
| - | <tabbox Edge2> | ||
| - | |||
| - | ```shell | ||
| - | echo 0 | sudo tee / | ||
| - | echo 1000000 | sudo tee / | ||
| - | echo 500000 | sudo tee / | ||
| - | echo 1 | sudo tee / | ||
| - | ``` | ||
| - | |||
| </ | </ | ||
| Line 148: | Line 136: | ||
| **Disable PWM:** | **Disable PWM:** | ||
| - | <tabbox VIM1/3/3L/ | + | <tabbox VIM1/ |
| ```shell | ```shell | ||
| echo 0 | sudo tee / | echo 0 | sudo tee / | ||
| Line 156: | Line 144: | ||
| echo 0 | sudo tee / | echo 0 | sudo tee / | ||
| ``` | ``` | ||
| - | < | + | < |
| ```shell | ```shell | ||
| echo 0 | sudo tee / | echo 0 | sudo tee / | ||
| - | ``` | ||
| - | <tabbox Edge2> | ||
| - | ```shell | ||
| - | echo 0 | sudo tee / | ||
| ``` | ``` | ||
| </ | </ | ||
| + | |||
| + | ===== Disable PWM to Use GPIO ===== | ||
| + | |||
| + | If you want to use normal GPIO instead of PWM, you can remove the PWM node in [[products: | ||
| + | |||
Last modified: 2023/12/25 22:01 by jacobe