simple CCS811 driver

Dependencies:   AMS_ENS210_temp_humid_sensor

Dependents:   TBSense2_Sensor_Demo

Fork of AMS_CCS811_gas_sensor by Marcus Lee

Revision:
1:acfca1d3256d
Parent:
0:5edbf3550350
Child:
2:e394671ef5f6
--- a/AMS_CCS811.cpp	Thu Jan 19 09:06:31 2017 +0000
+++ b/AMS_CCS811.cpp	Thu Jan 19 12:46:58 2017 +0000
@@ -3,14 +3,14 @@
 
 
 AMS_CCS811::AMS_CCS811(I2C * i2c, PinName n_wake_pin) { 
-    _n_wake_in(n_wake_pin);
+    _n_wake_out = new (std::nothrow) DigitalOut(n_wake_pin);
     _i2c = i2c;
     
     set_defaults();
 }
             
 AMS_CCS811::AMS_CCS811(I2C * i2c, PinName n_wake_pin, I2C * ens210_i2c) {
-    _n_wake_in(n_wake_pin);
+    _n_wake_out = new (std::nothrow) DigitalOut(n_wake_pin);
     _i2c = i2c;
     _ens210_i2c = ens210_i2c;
     
@@ -18,8 +18,146 @@
     
 }
               
-AMS_CCS811::~AMS_CCS811() {}
+AMS_CCS811::~AMS_CCS811() {
+    delete _n_wake_out;
+    delete _addr_out;
+    delete _int_data;
+}
+
+bool AMS_CCS811::init() {
+    
+}
+
+bool AMS_CCS811::mode(OP_MODES mode) {
+    OP_MODES old = _mode;               // incase the write fails, to roll back
+    _mode = mode;
+    
+    bool success = write_config();
+    if (!success)
+        _mode = old;
+    
+    return success;
+}
+
+AMS_CCS811::OP_MODES AMS_CCS811::mode() {
+    OP_MODES result = _mode;                        // rather not rely on this, but just incase the read fails
+    
+    read_config_result read_result = read_config();
+    if (read_result.success) {
+        int mode = (read_result.byte >> 4) & 0b111;
+        result = mode > 4 ? INVALID : mode;
+    } // todo ... add a new "last error" here
+    
+    return mode;
+}
+
+bool AMS_CCS811::addr_mode(bool high) { 
+    _addr_dir = high;
+    if (_addr_out != NULL) *_addr_out = _addr_dir;
+    
+    return addr_mode() == high;
+}
+
+bool AMS_CCS811::addr_mode() {
+    if (_addr_out != NULL) {
+        _addr_dir = *_addr_out; 
+    }
+    
+    return _addr_dir;
+}
+
+bool AMS_CCS811::addr_pin(PinName pin) {
+    _addr_out = _addr_out == NULL ? new (std::nothrow) DigitalOut(pin) : new (_addr_out) DigitalOut(pin);
+    addr_mode(_addr_dir);
+    
+    return _addr_out != NULL;
+}
+
+bool AMS_CCS811::n_wake_pin(PinName pin) {
+    _n_wake_out = _n_wake_out == NULL ? new (std::nothrow) DigitalOut(pin) : new (_n_wake_out) DigitalOut(pin);
+    return _n_wake_out != NULL;
+}
+
+bool eAMS_CCS811::env_data(float humid, float temp) {
+    return true;
+}
+
+
+AMS_CCS811::DATA_STATUS AMS_CCS811::has_new_data() {
+    return (DATA_STATUS) 0;
+}
+
+uint16_t AMS_CCS811::co2_read() {
+    return 0;
+
+uint16_t AMS_CCS811::tvoc_read() {
+    return 0;
+}
+
+uint16_t AMS_CCS811::raw_read() {
+    return 0;
+}
+
+const char * AMS_CCS811::last_error() {
+    return "";
+}
+
+bool AMS_CCS811::enable_interupt(bool enable) {
+    bool old = _int_data_enabled;   // incase the write fails, to roll back
+    _int_data_enabled = enable;
+    
+    bool success = write_config();
+    if (!success)
+        _int_data_enabled = old;
+    
+    return success;
+
+}
+
+bool AMS_CCS811::interupt_enabled() {
+    bool enabled = _int_data_enabled;                        // rather not rely on this, but just incase the read fails
+    
+    read_config_result read_result = read_config();
+    if (read_result.success) {
+        enabled = (read_result.byte >> 3) & 1;
+    } // todo ... add a new "last error" here? or maybe the read method itself should set that.
+    
+    return mode;
+}
+
+bool AMS_CCS811::interrupt_pin(PinName pin) {
+    bool success = false;
+    
+    _int_data = _int_data == NULL ? new (std::nothrow) DigitalOut(pin) : new (_int_data) DigitalOut(pin);
+    if (_int_data != NULL) {
+        _int_data->fall(this, &AMS_CCS811::_isr_data);
+        success = true;
+    }
+    
+    return success;
+}
 
 
 
-/** Private **/
\ No newline at end of file
+
+/** Private **/
+
+bool AMS_CCS811::set_defaults() {
+    if (_mode == NULL) 
+        _mode = CONFIG_OP_MODE;
+    if (_addr_dir == NULL)
+        _addr_dir = CONFIG_ADDR_DIR;
+    if (_int_data_enabled == NULL)
+        _int_data_enabled = CONFIG_INTR;
+        
+    return write_config();
+}
+        
+void AMS_CCS811::_isr_data() {
+}
+
+bool AMS_CCS811::write_config() {
+}
+
+read_config_result AMS_CCS811::read_config() {
+}
\ No newline at end of file