kopia lustrzana https://github.com/pimoroni/pimoroni-pico
PMS5003: Basic PMS5003 active-mode only driver.
Phil Howard
rodzic
8d329ccdd4
commit
c526c3ce6e
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@ -34,3 +34,4 @@ add_subdirectory(encoder)
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add_subdirectory(motor)
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add_subdirectory(vl53l5cx)
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add_subdirectory(pcf85063a)
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add_subdirectory(pms5003)
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@ -0,0 +1 @@
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include(pms5003.cmake)
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@ -0,0 +1,10 @@
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set(DRIVER_NAME pms5003)
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add_library(${DRIVER_NAME} INTERFACE)
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target_sources(${DRIVER_NAME} INTERFACE
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${CMAKE_CURRENT_LIST_DIR}/${DRIVER_NAME}.cpp)
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target_include_directories(${DRIVER_NAME} INTERFACE ${CMAKE_CURRENT_LIST_DIR})
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# Pull in pico libraries that we need
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target_link_libraries(${DRIVER_NAME} INTERFACE pico_stdlib hardware_uart hardware_gpio)
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@ -0,0 +1,114 @@
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#include "pico/stdlib.h"
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#include "hardware/uart.h"
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#include <cstring>
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constexpr char PMS5003_SOF[] = "\x42\x4d";
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constexpr uint16_t PMS5003_SOFU = 0x424d;
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constexpr char PMS5003_CMD_MODE_PASSIVE[] = "\xe1\x00\x00";
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constexpr char PMS5003_CMD_MODE_ACTIVE[] = "\xe1\x00\x01";
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constexpr char PMS5003_CMD_READ[] = "\xe2\x00\x00";
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constexpr char PMS5003_CMD_SLEEP[] = "\xe4\x00\x00";
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constexpr char PMS5003_CMD_WAKEUP[] = "\xe4\x00\x01";
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constexpr uint PMS5003_MAX_RESET_TIME = 20000;
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constexpr uint PMS5003_MAX_RESP_TIME = 5000;
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constexpr uint PMS5003_MIN_CMD_INTERVAL = 100;
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class PMS5003 {
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public:
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#pragma pack(push, 1)
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struct alignas(1) response_data {
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uint16_t pm_1_0;
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uint16_t pm_2_5;
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uint16_t pm_10;
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uint16_t pm_1_0_ao;
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uint16_t pm_2_5_ao;
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uint16_t pm_10_ao;
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uint16_t pm_0_3_1l;
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uint16_t pm_0_5_1l;
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uint16_t pm_1_0_1l;
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uint16_t pm_2_5_1l;
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uint16_t pm_5_1l;
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uint16_t pm_10_1l;
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};
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#pragma pack(pop)
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PMS5003(uart_inst_t *uart, uint pin_tx, uint pin_rx,
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uint pin_reset, uint pin_enable)
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: uart(uart),
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pin_tx(pin_tx),
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pin_rx(pin_rx),
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pin_reset(pin_reset),
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pin_enable(pin_enable) {
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uart_init(uart, 9600);
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gpio_init(pin_tx);gpio_set_function(pin_tx, GPIO_FUNC_UART);
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gpio_init(pin_rx);gpio_set_function(pin_rx, GPIO_FUNC_UART);
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gpio_init(pin_reset);gpio_set_function(pin_reset, GPIO_FUNC_SIO);gpio_set_dir(pin_reset, GPIO_OUT);gpio_put(pin_reset, false);
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gpio_init(pin_enable);gpio_set_function(pin_enable, GPIO_FUNC_SIO);gpio_set_dir(pin_enable, GPIO_OUT);gpio_put(pin_enable, true);
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reset();
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};
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~PMS5003() {};
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void reset() {
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sleep_ms(100);
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gpio_put(pin_reset, false);
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reset_input_buffer();
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sleep_ms(100);
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gpio_put(pin_reset, true);
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};
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bool read(response_data &data) {
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reset_input_buffer();
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// Read the 32 byte transaction - SOF + Size + Data + CRC
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uart_read_blocking(uart, buffer, 32);
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// test the checksum matches, if not quit early with a false return value
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uint16_t checksum = (buffer[30] << 8) | buffer[31];
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uint16_t compare = 0;
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for(int i = 0; i < 30; i++) {
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compare += buffer[i];
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}
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if(compare != checksum) {
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return false;
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}
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// Copy the data into the result struct
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memcpy(&data, buffer + 4, sizeof(data));
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// Byteswap the results
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data.pm_1_0 = __builtin_bswap16(data.pm_1_0);
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data.pm_2_5 = __builtin_bswap16(data.pm_2_5);
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data.pm_10 = __builtin_bswap16(data.pm_10);
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data.pm_1_0_ao = __builtin_bswap16(data.pm_1_0_ao);
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data.pm_2_5_ao = __builtin_bswap16(data.pm_2_5_ao);
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data.pm_10_ao = __builtin_bswap16(data.pm_10_ao);
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data.pm_0_3_1l = __builtin_bswap16(data.pm_0_3_1l);
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data.pm_0_5_1l = __builtin_bswap16(data.pm_0_5_1l);
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data.pm_1_0_1l = __builtin_bswap16(data.pm_1_0_1l);
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data.pm_2_5_1l = __builtin_bswap16(data.pm_2_5_1l);
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data.pm_5_1l = __builtin_bswap16(data.pm_5_1l);
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data.pm_10_1l = __builtin_bswap16(data.pm_10_1l);
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return true;
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}
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private:
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uart_inst_t *uart;
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uint pin_tx;
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uint pin_rx;
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uint pin_reset;
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uint pin_enable;
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uint8_t buffer[64];
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void reset_input_buffer() {
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while(uart_is_readable(uart)) {
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uart_getc(uart);
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}
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};
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};
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@ -22,6 +22,7 @@ add_subdirectory(breakout_bh1745)
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add_subdirectory(breakout_icp10125)
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add_subdirectory(breakout_scd41)
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add_subdirectory(breakout_vl53l5cx)
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add_subdirectory(breakout_pms5003)
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add_subdirectory(pico_display)
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add_subdirectory(pico_display_2)
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@ -0,0 +1,12 @@
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set(OUTPUT_NAME pms5003_demo)
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add_executable(
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${OUTPUT_NAME}
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pms5003_demo.cpp
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)
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# Pull in pico libraries that we need
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target_link_libraries(${OUTPUT_NAME} pico_stdlib pms5003)
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# create map/bin/hex file etc.
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pico_add_extra_outputs(${OUTPUT_NAME})
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@ -0,0 +1,40 @@
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#include <stdio.h>
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#include "pico/stdlib.h"
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#include "common/pimoroni_common.hpp"
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#include "hardware/uart.h"
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#include <cstring>
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#include "pms5003.hpp"
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using namespace pimoroni;
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PMS5003 pms5003(uart1, 8, 9, 2, 3);
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PMS5003::response_data data;
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int main() {
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stdio_init_all();
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while(true){
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bool result = pms5003.read(data);
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if(result){
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printf("%04x ", data.pm_1_0); // PM1.0 ug/m3 (ultrafine particles)
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printf("%04x ", data.pm_2_5); // PM2.5 ug/m3 (combustion particles, organic compounds, metals)
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printf("%04x ", data.pm_10); // PM10 ug/m3 (dust, pollen, mould spores)
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printf("%04x ", data.pm_1_0_ao); // PM 1.0 under atmospheric environment
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printf("%04x ", data.pm_2_5_ao); // PM 2.5 under atmospheric environment
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printf("%04x ", data.pm_10_ao); // PM 10 under atmospheric environment
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printf("%04x ", data.pm_0_3_1l); // PM 0.3 in 0.1L of air
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printf("%04x ", data.pm_0_5_1l); // PM 0.5 in 0.1L of air
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printf("%04x ", data.pm_1_0_1l); // PM 1.0 in 0.1L of air
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printf("%04x ", data.pm_2_5_1l); // PM 2.5 in 0.1L of air
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printf("%04x ", data.pm_5_1l); // PM 5 in 0.1L of air
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printf("%04x ", data.pm_10_1l); // PM 10 in 0.1L of air
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printf("\n");
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}
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sleep_ms(100);
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};
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return 0;
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}
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