From 7aac1f4ece4f263aae600608a2e4bcb1828011d4 Mon Sep 17 00:00:00 2001
From: Matthias Klein <matthias.klein@optimeas.de>
Date: Wed, 26 Jun 2024 15:22:52 +0200
Subject: [PATCH] sensirion_i2c_hal_init: add parameter to specify the device
 path

---
 sen5x_i2c_example_usage.c |  8 +++++++-
 sensirion_i2c_hal.c       | 10 ++--------
 sensirion_i2c_hal.h       |  2 +-
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/sen5x_i2c_example_usage.c b/sen5x_i2c_example_usage.c
index ec72e06..095d235 100644
--- a/sen5x_i2c_example_usage.c
+++ b/sen5x_i2c_example_usage.c
@@ -47,10 +47,16 @@
  * #define printf(...)
  */
 
+/**
+ * Linux specific configuration. Adjust the following define to the device path
+ * of your sensor.
+ */
+#define I2C_DEVICE_PATH "/dev/i2c-1"
+
 int main(void) {
     int16_t error = 0;
 
-    sensirion_i2c_hal_init();
+    sensirion_i2c_hal_init(I2C_DEVICE_PATH);
 
     error = sen5x_device_reset();
     if (error) {
diff --git a/sensirion_i2c_hal.c b/sensirion_i2c_hal.c
index d55ecc8..44c9e40 100644
--- a/sensirion_i2c_hal.c
+++ b/sensirion_i2c_hal.c
@@ -41,12 +41,6 @@
 #include <sys/ioctl.h>
 #include <unistd.h>
 
-/**
- * Linux specific configuration. Adjust the following define to the device path
- * of your sensor.
- */
-#define I2C_DEVICE_PATH "/dev/i2c-1"
-
 /**
  * The following define was taken from i2c-dev.h. Alternatively the header file
  * can be included. The define was added in Linux v3.10 and never changed since
@@ -64,9 +58,9 @@ static uint8_t i2c_address = 0;
  * Initialize all hard- and software components that are needed for the I2C
  * communication.
  */
-void sensirion_i2c_hal_init(void) {
+void sensirion_i2c_hal_init(const char* device_path) {
     /* open i2c adapter */
-    i2c_device = open(I2C_DEVICE_PATH, O_RDWR);
+    i2c_device = open(device_path, O_RDWR);
     if (i2c_device == -1)
         return; /* no error handling */
 }
diff --git a/sensirion_i2c_hal.h b/sensirion_i2c_hal.h
index f97444a..d6b9c7c 100644
--- a/sensirion_i2c_hal.h
+++ b/sensirion_i2c_hal.h
@@ -54,7 +54,7 @@ int16_t sensirion_i2c_hal_select_bus(uint8_t bus_idx);
  * Initialize all hard- and software components that are needed for the I2C
  * communication.
  */
-void sensirion_i2c_hal_init(void);
+void sensirion_i2c_hal_init(const char* device_path);
 
 /**
  * Release all resources initialized by sensirion_i2c_hal_init().