From f2638dddce4f21c210f04f5e33d0a916929cf1ea Mon Sep 17 00:00:00 2001
From: Travis Shears <t@travisshears.com>
Date: Wed, 9 Apr 2025 17:51:28 +0200
Subject: [PATCH] init pms5003 lib

---
 CmakeLists.txt |  2 +-
 node1.c        | 30 +++++++++++++++++++++++-------
 pms5003.c      | 33 +++++++++++++++++++++++++++++++++
 pms5003.h      | 20 ++++++++++++++++++++
 4 files changed, 77 insertions(+), 8 deletions(-)
 create mode 100644 pms5003.c
 create mode 100644 pms5003.h

diff --git a/CmakeLists.txt b/CmakeLists.txt
index 7dcb1ad..412eef0 100644
--- a/CmakeLists.txt
+++ b/CmakeLists.txt
@@ -19,7 +19,7 @@ pico_sdk_init()
 
 
 # the executable
-add_executable( node1 node1.c bme280.c )
+add_executable( node1 node1.c bme280.c pms5003.c )
 pico_set_program_version(node1 "0.1")
 pico_set_program_name(node1 "node_one")
 
diff --git a/node1.c b/node1.c
index 371aa11..258bb9e 100644
--- a/node1.c
+++ b/node1.c
@@ -1,21 +1,37 @@
+#include <hardware/uart.h>
 #include <stdio.h>
 #include <hardware/i2c.h>
 #include "pico/stdlib.h"
 #include "bme280.h"
-
-
+#include "pms5003.h"
 
 int main() {
     stdio_init_all();
+
+    // Setup BME280
     bme280_config config;
     bme280_init(&config, i2c1, 14, 15);
-    bme280_reading current_reading;
+    bme280_reading current_bem280_reading;
+
+    // Setup PMS5003
+    pms5003_config pms_config;
+    pms5003_init(&pms_config, uart1, 20, 21);
+    pms5003_reading current_pms5003_reading;
+
     while (true) {
         sleep_ms(5000); // wait 5 sec
         printf("Making reading\n");
-        current_reading = bme280_read(&config);
-        printf("Tempature: %.2f\n", current_reading.temperature);
-        printf("Pressure: %.2f\n", current_reading.pressure);
-        printf("Humidity: %.2f\n", current_reading.humidity);
+
+        // Read BME280
+        current_bem280_reading = bme280_read(&config);
+        printf("Tempature: %.2f\n", current_bem280_reading.temperature);
+        printf("Pressure: %.2f\n", current_bem280_reading.pressure);
+        printf("Humidity: %.2f\n", current_bem280_reading.humidity);
+
+        // Read PMS5003
+        current_pms5003_reading = pms5003_read(&pms_config);
+        printf("PM1: %.2f\n", current_pms5003_reading.pm1);
+        printf("PM2.5: %.2f\n", current_pms5003_reading.pm2_5);
+        printf("PM10: %.2f\n", current_pms5003_reading.pm10);
     }
 }
diff --git a/pms5003.c b/pms5003.c
new file mode 100644
index 0000000..5dba5d6
--- /dev/null
+++ b/pms5003.c
@@ -0,0 +1,33 @@
+#include "pms5003.h"
+#include "hardware/uart.h"
+#include "pico/stdlib.h"
+#include <stdint.h>
+#include <stdio.h>
+
+/**
+Lib for Plantower PMS5003 Particulate Matter (PM) Sensor
+
+Detects PM1, PM2.5, PM10 particulates
+
+Sourcces:
+    -
+https://shop.pimoroni.com/products/pms5003-particulate-matter-sensor-with-cable
+    - https://github.com/pimoroni/pms5003-python/blob/main/pms5003/__init__.py
+    - https://github.com/vogelrh/pms5003c/tree/master
+*/
+
+void pms5003_init(pms5003_config *new_config, uart_inst_t *uart, uint8_t tx_pin,
+                  uint8_t rx_pin) {
+  uart_init(uart, 9600);
+  gpio_set_function(tx_pin, UART_FUNCSEL_NUM(uart, tx_pin));
+  gpio_set_function(rx_pin, UART_FUNCSEL_NUM(uart, rx_pin));
+  new_config->uart = uart;
+}
+
+pms5003_reading pms5003_read(pms5003_config *config) {
+  pms5003_reading reading;
+  reading.pm1 = 0;
+  reading.pm2_5 = 0;
+  reading.pm10 = 0;
+  return reading;
+}
diff --git a/pms5003.h b/pms5003.h
new file mode 100644
index 0000000..16cc66a
--- /dev/null
+++ b/pms5003.h
@@ -0,0 +1,20 @@
+#ifndef PMS5003_H
+#define PMS5003_H
+#include "hardware/uart.h"
+#include <stdint.h>
+
+typedef struct {
+  float pm1;
+  float pm2_5;
+  float pm10;
+} pms5003_reading;
+
+typedef struct {
+  uart_inst_t *uart;
+} pms5003_config;
+
+void pms5003_init(pms5003_config *config, uart_inst_t *uart, uint8_t tx_pin,
+                  uint8_t rx_pin);
+
+pms5003_reading pms5003_read(pms5003_config *config);
+#endif /* PMS5003_H */