Update wiring_analog.cpp (#1092)

NuclearPhoenixx · web-flow · commit 0e6ca28316c0 · 2023-01-02T10:44:49.000-08:00
diff --git a/cores/rp2040/wiring_analog.cpp b/cores/rp2040/wiring_analog.cpp
@@ -172,7 +172,7 @@ extern "C" float analogReadTemp(float vref) {
     adc_select_input(4); // Temperature sensor
     int v = adc_read();
     adc_set_temp_sensor_enabled(false);
-    float t = 27.0f - ((v * vref / pow(2, _readBits)) - 0.706f) / 0.001721f; // From the datasheet
+    float t = 27.0f - ((v * vref / 4096.0f) - 0.706f) / 0.001721f; // From the datasheet
     return t;
 }
 

Original file line number	Diff line number	Diff line change
`@@ -172,7 +172,7 @@ extern "C" float analogReadTemp(float vref) {`
`172`	`172`	`adc_select_input(4); // Temperature sensor`
`173`	`173`	`int v = adc_read();`
`174`	`174`	`adc_set_temp_sensor_enabled(false);`
`175`		`- float t = 27.0f - ((v * vref / pow(2, _readBits)) - 0.706f) / 0.001721f; // From the datasheet`
	`175`	`+ float t = 27.0f - ((v * vref / 4096.0f) - 0.706f) / 0.001721f; // From the datasheet`
`176`	`176`	`return t;`
`177`	`177`	`}`
`178`	`178`