start from BMP180

I2Csensors/sensor.c

@@ -0,0 +1,84 @@
+/*
+ * Copyright 2025 Edward V. Emelianov <edward.emelianoff@gmail.com>.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <usefull_macros.h>
+
+#include "BMP180.h"
+#include "i2c.h"
+#include "sensor.h"
+
+// NULL-terminated list of all supported sensors
+static const sensor_t* supported_sensors[] = {&BMP180, NULL};
+
+// just two stupid wrappers
+int sensors_open(const char *dev){
+    return i2c_open(dev);
+}
+void sensors_close(){
+    i2c_close();
+}
+
+// init sensor with optional new address
+int sensor_init(const sensor_t *s, uint8_t address){
+    if(!s) return FALSE;
+    address = s->address(address);
+    if(!i2c_set_slave_address(address)){
+        DBG("Can't set slave address 0x%02x", address);
+        return FALSE;
+    }
+    if(!i2c_read_reg8(0, NULL)){
+        DBG("Can't connect!");
+        return FALSE;
+    }
+    double t0 = sl_dtime();
+    int result = FALSE;
+    while(sl_dtime() - t0 < SENS_TIMEOUT && !(result = s->init())) usleep(10000);
+    return result;
+}
+
+// find supported sensor by name
+const sensor_t* sensor_find(const char *name){
+    if(!name || !*name) return NULL;
+    const sensor_t **p = supported_sensors;
+    while(*p){
+        if(0 == strcmp((*p)->name, name)) return *p;
+        ++p;
+    }
+    return NULL;
+}
+
+// list all supported sensors
+void sensors_list(){
+    const sensor_t **p = supported_sensors;
+    green("Supported sensors:\n");
+    while(*p){
+        printf("%s", (*p)->name);
+        if(*(++p)) printf(", ");
+    }
+    printf("\n");
+}
+
+// wrapper with timeout
+int sensor_start(const sensor_t *s){
+    if(!s) return FALSE;
+    double t0 = sl_dtime();
+    int result = FALSE;
+    while(sl_dtime() - t0 < SENS_TIMEOUT && !(result = s->start())) usleep(10000);
+    return result;
+}