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| resources:tools-software:linuxdsp:docs:linux-kernel-and-drivers:rotary:rotary [03 Jul 2020 07:51] – Sunny Feng | resources:tools-software:linuxdsp:docs:linux-kernel-and-drivers:rotary:rotary [21 Jul 2020 08:02] (current) – cathy fang | ||
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| ===== Hardware Setup ===== | ===== Hardware Setup ===== | ||
| - | * An ADSP-SC5xx EZ-Board: | + | An ADSP-SC5xx EZ-Board: |
| * ADSP-SC584 Ezkit v1.0 and above, or, | * ADSP-SC584 Ezkit v1.0 and above, or, | ||
| * ADSP-SC573 Ezkit v1.2 (BOM 1.8) and above | * ADSP-SC573 Ezkit v1.2 (BOM 1.8) and above | ||
| Line 13: | Line 13: | ||
| {{: | {{: | ||
| ===== Software Configuration ===== | ===== Software Configuration ===== | ||
| + | |||
| + | ==== Configure Linux kernel ==== | ||
| + | |||
| + | You need to enable the ADI rotary driver in Linux kernel. | ||
| + | < | ||
| + | Device Drivers ---> | ||
| + | Input device support ---> | ||
| + | < | ||
| + | [*] Miscellaneous devices ---> | ||
| + | < | ||
| + | </ | ||
| + | |||
| + | ==== Configure Packages ==== | ||
| + | You should also enable the event test program to assist with testing. | ||
| + | Add the event test program in the filesystem images, it's enabled in adsp-sc5xx-full image by default. | ||
| + | < | ||
| + | vim build/ | ||
| + | IMAGE_INSTALL_append = " | ||
| + | </ | ||
| ==== ADSP-SC573 EZ-Board ==== | ==== ADSP-SC573 EZ-Board ==== | ||
| As the Rotary hardware pin conflicts with MSI function on the ADSP-SC573 EZ-Board, thumb wheel switch is disabled by default in U-Boot for ADSP-SC573 EZ-Board out of box. To enable thumb wheel hardware switch, you should enable the thumb wheel switch in U-Boot and disable MSI function in Linux kernel. Please refer to ADSP-SC573 EZ-Board schematic and the section Mobile Storage Interface for MMC/SD for more information. | As the Rotary hardware pin conflicts with MSI function on the ADSP-SC573 EZ-Board, thumb wheel switch is disabled by default in U-Boot for ADSP-SC573 EZ-Board out of box. To enable thumb wheel hardware switch, you should enable the thumb wheel switch in U-Boot and disable MSI function in Linux kernel. Please refer to ADSP-SC573 EZ-Board schematic and the section Mobile Storage Interface for MMC/SD for more information. | ||
| Line 20: | Line 39: | ||
| MMC/ | MMC/ | ||
| [*] Synopsys DesignWare Memory Card Interface | [*] Synopsys DesignWare Memory Card Interface | ||
| - | [*] Synopsys Designware MCI Support as platform device | + | |
| - | [N] ADI specific extensions for Synopsys DW Memory Card Interface | + | <N> ADI specific extensions for Synopsys DW Memory Card Interface |
| </ | </ | ||
| Line 45: | Line 64: | ||
| </ | </ | ||
| - | ==== Configure Linux kernel ==== | + | The driver provides two options. It can either send Key (KEY) or Relative (REL) events. |
| - | You need to enable the ADI rotary driver in Linux kernel. | + | **Option 1** – send Key events: Provide two KEY Codes for: |
| - | < | + | |
| - | Device Drivers ---> | + | |
| - | Input device support ---> | + | |
| - | < | + | |
| - | [*] Miscellaneous devices ---> | + | |
| - | < | + | |
| - | </ | + | |
| - | + | ||
| - | ==== Configure Packages ==== | + | |
| - | You should also enable the event test program to assist with testing. | + | |
| - | Add the event test program in the filesystem images, it's enabled in adsp-sc5xx-full image by default. | + | |
| - | < | + | |
| - | vim build/ | + | |
| - | IMAGE_INSTALL_append = " | + | |
| - | </ | + | |
| - | + | ||
| - | The driver provides two options. It can either send Key (KEY) or Relative (REL) events. | + | |
| - | - **Option 1** – send Key events: Provide two KEY Codes for: | + | |
| < | < | ||
| rotary_up_key | rotary_up_key | ||
| rotary_down_key = KEY_MINUS | rotary_down_key = KEY_MINUS | ||
| </ | </ | ||
| - | - **Option 2** – send REL events: Provide one REL event type: | + | **Option 2** – send REL events: Provide one REL event type: |
| - | < | + | < |
| - | rotary_rel_code = REL_WHEEL | + | |
| - | </ | + | |
| In case your CZM input is connected (push-button signal of thumb wheels) Specify the KEY event – this will enable the CZM input. See include/ | In case your CZM input is connected (push-button signal of thumb wheels) Specify the KEY event – this will enable the CZM input. See include/ | ||
| - | < | + | < |
| - | rotary_button_key = KEY_ENTER | + | |
| - | </ | + | |
| The debounce prescale value is used to select the noise filtering characteristic of the input pins. Must be in the range of 0..17 | The debounce prescale value is used to select the noise filtering characteristic of the input pins. Must be in the range of 0..17 | ||
| - | < | + | < |
| - | debounce = 10 | + | |
| - | </ | + | |
| The driver supports various Counter types | The driver supports various Counter types | ||
| - | < | + | < |
| - | cnt_mode = CNTMODE_QUADENC | + | |
| - | </ | + | |
| ===== Example ===== | ===== Example ===== | ||
| Line 166: | Line 160: | ||
| </ | </ | ||
| + | ---- | ||
| **Back to** [[resources: | **Back to** [[resources: | ||
resources/tools-software/linuxdsp/docs/linux-kernel-and-drivers/rotary/rotary.txt · Last modified: 21 Jul 2020 08:02 by cathy fang