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examples: update app_trace pins for esp32s2

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This commit is contained in:
Renz Bagaporo
2020-04-14 16:12:43 +08:00
parent 7c09cb1739
commit 666ee00ebe
2 changed files with 13 additions and 11 deletions
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13
examples/system/app_trace_to_host/README.md
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@@ -1,6 +1,3 @@
| Supported Targets | ESP32 |
| ----------------- | ----- |
# Application Level Tracing Example (Logging to Host)
(See the README.md file in the upper level 'examples' directory for more information about examples.)
@@ -30,11 +27,13 @@ This example will assume that that an ESP-WROVER-KIT is used.
#### Pin Assignment:
The sinusoidal signal of 50 to 60 Hz ranging from 0 V ~ 3.1 V should be input into `GPIO34` (`ADC1_CHANNEL_6`). Users may provide this signal themselves, our use the DAC generated signal by bridging GPIO34 with `GPIO25` (`DAC_CHANNEL_1`).
The sinusoidal signal of 50 to 60 Hz ranging from 0 V ~ 3.1 V should be input into `ADC1_CHANNEL_6`. Users may provide this signal themselves, or use the example-generated signal in `DAC_CHANNEL_1`. Listed below are the corresponding DAC/ADC channel pins
for supported targets.
| DAC Output | ADC Input |
| ------------------ | ------------------ |
| Channel 1 (GPIO25) | Channel 6 (GPIO34) |
| Target | DAC Output | ADC Input |
| ------------------ | ------------------ | ------------------ |
| ESP32 | Channel 1 (GPIO25) | Channel 6 (GPIO34) |
| ESP32S2 | Channel 1 (GPIO17) | Channel 6 (GPIO7) |
#### Extra Connections:

11
examples/system/app_trace_to_host/main/app_trace_to_host_example_main.c
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@@ -16,8 +16,11 @@
#include "soc/sens_periph.h"
#include "driver/adc.h"
#include "driver/dac.h"
#include "soc/adc_channel.h"
#include "soc/dac_channel.h"
#define ADC1_TEST_CHANNEL (ADC1_CHANNEL_6)
#define TEST_SAMPLING_PERIOD 20
/*
@@ -41,7 +44,7 @@ static const char *TAG = "example";
/*
* Enable cosine waveform generator (CW)
* on channel 1 / GPIO25 to provide sinusoidal signal
* on DAC channel 1 to provide sinusoidal signal
* It can be used instead of a live signal for testing
* of speed of logging to the host
* sequentially with data retrieval from ADC
@@ -65,7 +68,7 @@ static void enable_cosine_generator(void)
}
/*
* Sample data an ADC1 channel 6 / GPIO34
* Sample data an ADC1 channel 6
* over specific 'sampling_period' in milliseconds.
* Print out sampling result using standard ESP_LOGI() function.
* Return the number of samples collected.
@@ -87,7 +90,7 @@ static int adc1_sample_and_show(int sampling_period)
*/
void app_main(void)
{
ESP_LOGI(TAG, "Enabling ADC1 on channel 6 / GPIO34.");
ESP_LOGI(TAG, "Enabling ADC1 on channel 6 / GPIO%d.", ADC1_CHANNEL_6_GPIO_NUM);
#if CONFIG_IDF_TARGET_ESP32
adc1_config_width(ADC_WIDTH_BIT_12);
#elif CONFIG_IDF_TARGET_ESP32S2
@@ -95,7 +98,7 @@ void app_main(void)
#endif
adc1_config_channel_atten(ADC1_TEST_CHANNEL, ADC_ATTEN_DB_11);
ESP_LOGI(TAG, "Enabling CW generator on DAC channel 1 / GPIO25.");
ESP_LOGI(TAG, "Enabling CW generator on DAC channel 1 / GPIO%d.", DAC_CHANNEL_1_GPIO_NUM);
enable_cosine_generator();
while (1) {