initial commit of project
This commit is contained in:
commit
b1224528aa
4 changed files with 207 additions and 0 deletions
25
.gitignore
vendored
Normal file
25
.gitignore
vendored
Normal file
|
|
@ -0,0 +1,25 @@
|
|||
# Created by https://www.toptal.com/developers/gitignore/api/cmake
|
||||
# Edit at https://www.toptal.com/developers/gitignore?templates=cmake
|
||||
|
||||
### CMake ###
|
||||
CMakeLists.txt.user
|
||||
CMakeCache.txt
|
||||
CMakeFiles
|
||||
CMakeScripts
|
||||
Testing
|
||||
Makefile
|
||||
cmake_install.cmake
|
||||
install_manifest.txt
|
||||
compile_commands.json
|
||||
CTestTestfile.cmake
|
||||
_deps
|
||||
pico_sdk_import.cmake
|
||||
### CMake Patch ###
|
||||
CMakeUserPresets.json
|
||||
|
||||
# External projects
|
||||
*-prefix/
|
||||
|
||||
# build folder
|
||||
build/
|
||||
# End of https://www.toptal.com/developers/gitignore/api/cmake
|
||||
59
CMakeLists.txt
Normal file
59
CMakeLists.txt
Normal file
|
|
@ -0,0 +1,59 @@
|
|||
# Generated Cmake Pico project file
|
||||
|
||||
cmake_minimum_required(VERSION 3.13)
|
||||
|
||||
set(CMAKE_C_STANDARD 11)
|
||||
set(CMAKE_CXX_STANDARD 17)
|
||||
|
||||
# Initialise pico_sdk from installed location
|
||||
# (note this can come from environment, CMake cache etc)
|
||||
set(PICO_SDK_PATH "/home/amr/workspace/rp2040/pico-sdk")
|
||||
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
|
||||
set(PICO_BOARD pico_w CACHE STRING "Board type")
|
||||
|
||||
# Pull in Raspberry Pi Pico SDK (must be before project)
|
||||
include(pico_sdk_import.cmake)
|
||||
|
||||
if (PICO_SDK_VERSION_STRING VERSION_LESS "1.4.0")
|
||||
message(FATAL_ERROR "Raspberry Pi Pico SDK version 1.4.0 (or later) required. Your version is ${PICO_SDK_VERSION_STRING}")
|
||||
endif()
|
||||
|
||||
project(ensaht C CXX ASM)
|
||||
|
||||
# Initialise the Raspberry Pi Pico SDK
|
||||
pico_sdk_init()
|
||||
|
||||
# Add executable. Default name is the project name, version 0.1
|
||||
|
||||
add_executable(ensaht ensaht.c )
|
||||
|
||||
pico_set_program_name(ensaht "ensaht")
|
||||
pico_set_program_version(ensaht "0.1")
|
||||
pico_enable_stdio_usb(ensaht 1)
|
||||
pico_enable_stdio_uart(ensaht 0)
|
||||
# Add the standard library to the build
|
||||
target_link_libraries(ensaht
|
||||
hardware_i2c
|
||||
hardware_gpio
|
||||
hardware_divider
|
||||
pico_double
|
||||
pico_stdlib)
|
||||
if (PICO_CYW43_SUPPORTED)
|
||||
target_link_libraries(ensaht pico_cyw43_arch_none)
|
||||
endif()
|
||||
# Add the standard include files to the build
|
||||
target_include_directories(ensaht PRIVATE
|
||||
${CMAKE_CURRENT_LIST_DIR}
|
||||
${CMAKE_CURRENT_LIST_DIR}/.. # for our common lwipopts or any other standard includes, if required
|
||||
)
|
||||
|
||||
pico_add_extra_outputs(ensaht)
|
||||
|
||||
add_custom_target(flash
|
||||
COMMAND openocd
|
||||
-f interface/cmsis-dap.cfg
|
||||
-f target/rp2350.cfg
|
||||
-c "adapter speed 5000"
|
||||
-c "program ${CMAKE_CURRENT_BINARY_DIR}/ensaht.elf verify reset exit"
|
||||
DEPENDS ensaht
|
||||
)
|
||||
21
LICENSE
Normal file
21
LICENSE
Normal file
|
|
@ -0,0 +1,21 @@
|
|||
MIT License
|
||||
|
||||
Copyright (c) 2026 A.M. Rowsell
|
||||
|
||||
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
of this software and associated documentation files (the "Software"), to deal
|
||||
in the Software without restriction, including without limitation the rights
|
||||
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
|
||||
|
||||
The above copyright notice and this permission notice shall be included in all
|
||||
copies or substantial portions of the Software.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||||
SOFTWARE.
|
||||
102
ensaht.c
Normal file
102
ensaht.c
Normal file
|
|
@ -0,0 +1,102 @@
|
|||
#include "hardware/gpio.h"
|
||||
#include "hardware/i2c.h"
|
||||
#include "pico/cyw43_arch.h"
|
||||
#include "pico/stdlib.h"
|
||||
#include <boards/pico_w.h>
|
||||
#include <hardware/structs/io_bank0.h>
|
||||
#include <pico/binary_info/code.h>
|
||||
#include <pico/double.h>
|
||||
#include <stdio.h>
|
||||
|
||||
#define AHT_ADDR 0x38
|
||||
#define ENS_ADDR 0x53
|
||||
uint8_t AHT_MEASURE[3] = {0xAC, 0x33, 0x00};
|
||||
uint8_t ENS_ACTIVATE[2] = {0x10, 0x02};
|
||||
uint8_t ENS_IDLE[2] = {0x10, 0x01};
|
||||
#define ENS_TEMP_IN 0x13
|
||||
#define ENS_HUM_IN 0x15
|
||||
#define ENS_STATUS 0x20
|
||||
#define ENS_STATUS_MASK 0x0C
|
||||
#define ENS_AQI 0x21
|
||||
#define ENS_TVOC 0x22
|
||||
#define ENS_ECO2 0x24
|
||||
#define ENS_ETOH 0x26
|
||||
|
||||
void getAHTData(double *t, double *h) {
|
||||
uint8_t result[6];
|
||||
uint32_t temperature, humidity;
|
||||
i2c_write_blocking(i2c_default, AHT_ADDR, AHT_MEASURE, 3,
|
||||
false); // trigger measurement
|
||||
// now we must delay ~100ms
|
||||
sleep_ms(100);
|
||||
i2c_read_blocking(i2c_default, AHT_ADDR, result, 6,
|
||||
false); // read 6 bytes back
|
||||
humidity = (result[1] << 12) | (result[2] << 4) | (result[3] & 0xF0) >> 4;
|
||||
temperature = (result[3] & 0x0F) << 16 | (result[4] << 8) | result[5];
|
||||
*t = ((double)temperature / 1048576.0f) * 200.0f - 50.0f;
|
||||
*h = ((double)humidity / 1048576.0f) * 100.0f;
|
||||
return;
|
||||
}
|
||||
|
||||
void activateENS(void) {
|
||||
i2c_write_blocking(i2c_default, ENS_ADDR, ENS_ACTIVATE, 2, false);
|
||||
return;
|
||||
}
|
||||
void deactivateENS(void) {
|
||||
i2c_write_blocking(i2c_default, ENS_ADDR, ENS_IDLE, 2, false);
|
||||
return;
|
||||
}
|
||||
uint8_t getENSData(double *t, double *h, uint8_t *AQI, uint16_t *TVOC,
|
||||
uint16_t *ECO2, uint16_t *ETOH) {
|
||||
uint16_t K = (uint16_t)(*t + 273.15) * 64; // convert to ENS format
|
||||
uint16_t RH = (uint16_t)*h * 512;
|
||||
uint8_t inputData[5] = {0x13, (uint8_t)(K & 0x00FF), (uint8_t)(K >> 8),
|
||||
(uint8_t)(RH & 0x00FF), (uint8_t)(RH >> 8)};
|
||||
uint8_t result[7], dataReg = ENS_AQI, valid;
|
||||
i2c_write_blocking(i2c_default, ENS_ADDR, inputData, 5, false);
|
||||
activateENS();
|
||||
sleep_ms(100);
|
||||
i2c_write_blocking(i2c_default, ENS_ADDR, &dataReg, 1, true);
|
||||
i2c_read_blocking(i2c_default, ENS_ADDR, result, 7, false);
|
||||
*AQI = result[0];
|
||||
*TVOC = (result[2] << 8) | result[1];
|
||||
*ECO2 = (result[4] << 8) | result[3];
|
||||
*ETOH = (result[6] << 8) | result[5];
|
||||
dataReg = 0x20; // status register
|
||||
i2c_write_blocking(i2c_default, ENS_ADDR, &dataReg, 1, true);
|
||||
i2c_read_blocking(i2c_default, ENS_ADDR, result, 1, false);
|
||||
printf("Status register is 0x%0X\n", result[0]);
|
||||
valid = (result[0] & ENS_STATUS_MASK) == 0
|
||||
? 1
|
||||
: 0; // check if we are in warm-up or normal mode
|
||||
// deactivateENS();
|
||||
return valid;
|
||||
}
|
||||
|
||||
int main() {
|
||||
uint16_t tvoc, eco2, etoh;
|
||||
uint8_t aqi, validData;
|
||||
double t, h;
|
||||
stdio_init_all();
|
||||
i2c_init(i2c_default, 100 * 1000); // start i2c at 100khz
|
||||
gpio_set_function(PICO_DEFAULT_I2C_SCL_PIN, GPIO_FUNC_I2C);
|
||||
gpio_set_function(PICO_DEFAULT_I2C_SDA_PIN, GPIO_FUNC_I2C);
|
||||
gpio_pull_up(PICO_DEFAULT_I2C_SCL_PIN);
|
||||
gpio_pull_up(PICO_DEFAULT_I2C_SDA_PIN);
|
||||
|
||||
bi_decl(bi_2pins_with_func(PICO_DEFAULT_I2C_SDA_PIN, PICO_DEFAULT_I2C_SCL_PIN,
|
||||
GPIO_FUNC_I2C));
|
||||
|
||||
while (1) {
|
||||
getAHTData(&t, &h);
|
||||
printf("Temperature %f Humidity %f\n", t, h);
|
||||
validData = getENSData(&t, &h, &aqi, &tvoc, &eco2, &etoh);
|
||||
if (!validData) {
|
||||
printf("ENS Data not yet valid\n");
|
||||
}
|
||||
printf("AQI: %d TVOC: %d eCO2: %d EtOH: %d\n", aqi, tvoc, eco2, etoh);
|
||||
sleep_ms(2000);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue