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Merge branch 'doc/fix_datasheet_link_ec11' into 'master'

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docs: update EC11 datasheet link

Closes IDFGH-11286

See merge request espressif/esp-idf!26621
This commit is contained in:
morris 2023-10-23 15:26:35 +08:00
commit d4f7880d68
2 changed files with 24 additions and 21 deletions
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32
examples/peripherals/mcpwm/mcpwm_capture_hc_sr04/README.md
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@ -13,7 +13,7 @@ The signal that HC-SR04 produces (and what can be handled by this example) is a
Typical signals:
```
```text
Trig +-----+
| |
| |
@ -36,19 +36,21 @@ Echo +-----+
Connection :
```text
+------+ +--------------------------------------+
+-------+ | | |
| | VCC +--------------+ 5V |
+-------+ | | |
+ Echo +----=====>----+ HC_SR04_ECHO_GPIO (internal pull up) |
| | | |
+ Trig +----<=====----+ HC_SR04_TRIG_GPIO |
+-------| | | |
| | GND +--------------+ GND |
+-------| | | |
+------+ +--------------------------------------+
```
+------+ +---------------------------------+
+-------+ | | |
| | VCC +--------------+ 5V |
+-------+ | | |
+ Echo +----=====>----+ GPIO18 (internal pull up) |
| | | |
+ Trig +----<=====----+ GPIO19 |
+-------| | | |
| | GND +--------------+ GND |
+-------| | | |
+------+ +---------------------------------+
```
You can change the GPIO number according to your board, by `HC_SR04_TRIG_GPIO` and `HC_SR04_ECHO_GPIO` in the [source code](main/mcpwm_capture_hc_sr04.c).
### Build and Flash
@ -60,7 +62,7 @@ See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/l
## Example Output
```
```text
I (0) cpu_start: Starting scheduler on APP CPU.
I (304) example: Create capture queue
I (304) example: Install capture timer
@ -78,7 +80,7 @@ I (734) example: Pulse width: 188.98us, Measured distance: 3.26cm
I (834) example: Pulse width: 188.99us, Measured distance: 3.26cm
```
This example runs at 10Hz sampling rate. Measure data that out of the range is dropped and only valid measurement is printed out.
This example runs at 10 Hz sampling rate. Measure data that out of the range is dropped and only valid measurement is printed out.
## Troubleshooting

13
examples/peripherals/pcnt/rotary_encoder/README.md
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@ -6,13 +6,14 @@
(See the README.md file in the upper level 'examples' directory for more information about examples.)
The PCNT peripheral is designed to count the number of rising and/or falling edges of an input signal. Each PCNT unit has two channels, which makes it possible to extract more information from two input signals than only one signal.
This example shows how to make use of the HW features to decode the differential signals generated from a common rotary encoder -- [EC11](https://tech.alpsalpine.com/prod/e/html/encoder/incremental/ec11/ec11_list.html).
This example shows how to make use of the HW features to decode the differential signals generated from a common rotary encoder -- [EC11](https://tech.alpsalpine.com/e/products/category/encorder/sub/01/series/ec11e/).
The signals a rotary encoder produces (and what can be handled by this example) are based on a 2-bit gray code available on 2 digital data signal lines. The typical encoders use 3 output pins: 2 for the signals and one for the common signal usually GND.
Typical signals:
```
```text
A +-----+ +-----+ +-----+
| | | |
| | | |
@ -35,7 +36,7 @@ B +-----+ +-----+ +-----+
Connection :
```
```text
+--------+ +---------------------------------+
| | | |
| A +--------------+ GPIO_A (internal pull up) |
@ -49,11 +50,11 @@ Connection :
+--------+ +---------------------------------+
```
The GPIO used by the example can be changed according to your board by `EXAMPLE_EC11_GPIO_A` and `EXAMPLE_EC11_GPIO_B` in [source file](main/rotary_encoder_example_main.c);
The GPIO used by the example can be changed according to your board by `EXAMPLE_EC11_GPIO_A` and `EXAMPLE_EC11_GPIO_B` in [source file](main/rotary_encoder_example_main.c).
### Build and Flash
By configuring one of the EC11 GPIO (e.g. `EXAMPLE_EC11_GPIO_A`) as a wake up source, we can make the rotary encoder wake the system from light sleep. This example can illustrate this feature if you enable the `EXAMPLE_WAKE_UP_LIGHT_SLEEP` from the menuconfig.
By configuring one of the EC11 GPIO (e.g. `EXAMPLE_EC11_GPIO_A`) as a wake up source, you can make the rotary encoder wake the system from light sleep. This example can illustrate this feature if you enable the `EXAMPLE_WAKE_UP_LIGHT_SLEEP` from the menuconfig.
Run `idf.py -p PORT flash monitor` to build, flash and monitor the project.
@ -63,7 +64,7 @@ See the [Getting Started Guide](https://docs.espressif.com/projects/esp-idf/en/l
## Example Output
```
```text
I (0) cpu_start: Starting scheduler on APP CPU.
I (325) example: install pcnt unit
I (335) example: set glitch filter