mirror of
https://github.com/kidoman/embd
synced 2024-09-20 22:41:41 +02:00
simplify sign bit extraction and remove extraneous error check'
'
This commit is contained in:
parent
d938e007ff
commit
afc8c08cff
@ -3,7 +3,6 @@ package main
|
|||||||
import (
|
import (
|
||||||
"bufio"
|
"bufio"
|
||||||
"fmt"
|
"fmt"
|
||||||
"log"
|
|
||||||
"os"
|
"os"
|
||||||
"time"
|
"time"
|
||||||
|
|
||||||
@ -34,7 +33,7 @@ func main() {
|
|||||||
therm.SetAlertStatus(true)
|
therm.SetAlertStatus(true)
|
||||||
therm.SetAlertControl(true)
|
therm.SetAlertControl(true)
|
||||||
therm.SetAlertSelect(false)
|
therm.SetAlertSelect(false)
|
||||||
therm.SetAlertPolarity(false)
|
therm.SetAlertPolarity(true)
|
||||||
|
|
||||||
config, _ := therm.Config()
|
config, _ := therm.Config()
|
||||||
fmt.Printf("New Config: %b\n", config)
|
fmt.Printf("New Config: %b\n", config)
|
||||||
@ -43,11 +42,18 @@ func main() {
|
|||||||
panic(err)
|
panic(err)
|
||||||
}
|
}
|
||||||
|
|
||||||
|
if err := therm.SetWindowTempLower(TempFToC(-40)); err != nil {
|
||||||
|
panic(err)
|
||||||
|
}
|
||||||
|
lowerTemp, err := therm.WindowTempLower()
|
||||||
|
if err != nil {
|
||||||
|
fmt.Printf("Error reading lower temp limit: %s\n", err.Error())
|
||||||
|
}
|
||||||
|
fmt.Printf("Lower Temp Limit set to: %fC\n", lowerTemp)
|
||||||
|
|
||||||
if err := therm.SetWindowTempUpper(TempFToC(80)); err != nil {
|
if err := therm.SetWindowTempUpper(TempFToC(80)); err != nil {
|
||||||
panic(err)
|
panic(err)
|
||||||
}
|
}
|
||||||
fmt.Printf("Set upper temp to %fC\n", TempFToC(80))
|
|
||||||
|
|
||||||
upperTemp, _ := therm.WindowTempUpper()
|
upperTemp, _ := therm.WindowTempUpper()
|
||||||
fmt.Printf("Upper Temp Limit set to: %fC\n", upperTemp)
|
fmt.Printf("Upper Temp Limit set to: %fC\n", upperTemp)
|
||||||
|
|
||||||
@ -55,10 +61,19 @@ func main() {
|
|||||||
if err != nil {
|
if err != nil {
|
||||||
panic(err)
|
panic(err)
|
||||||
}
|
}
|
||||||
defer embd.CloseGPIO()
|
defer alert.Close()
|
||||||
|
|
||||||
alert.SetDirection(embd.In)
|
alert.SetDirection(embd.In)
|
||||||
alert.PullUp()
|
alert.ActiveLow(false)
|
||||||
|
|
||||||
|
err = alert.Watch(embd.EdgeRising, func(alert embd.DigitalPin) {
|
||||||
|
fmt.Printf("Temperature is outside the specified window!\n")
|
||||||
|
therm.SetInterruptClear(true)
|
||||||
|
therm.Config()
|
||||||
|
})
|
||||||
|
if err != nil {
|
||||||
|
panic(err)
|
||||||
|
}
|
||||||
|
|
||||||
cancel := make(chan bool)
|
cancel := make(chan bool)
|
||||||
go func() {
|
go func() {
|
||||||
@ -78,16 +93,6 @@ func main() {
|
|||||||
fmt.Printf("Current temp is: %fF (%fC), Window Alert: %v, Critical Alert: %v\n",
|
fmt.Printf("Current temp is: %fF (%fC), Window Alert: %v, Critical Alert: %v\n",
|
||||||
TempCToF(temp.CelsiusDeg), temp.CelsiusDeg, temp.AboveUpper || temp.BelowLower, temp.AboveCritical)
|
TempCToF(temp.CelsiusDeg), temp.CelsiusDeg, temp.AboveUpper || temp.BelowLower, temp.AboveCritical)
|
||||||
}
|
}
|
||||||
status, err := alert.Read()
|
|
||||||
if err != nil {
|
|
||||||
log.Printf("Error reading pin: %s\n", err.Error())
|
|
||||||
continue
|
|
||||||
}
|
|
||||||
fmt.Printf("Status: %d\n\n", status)
|
|
||||||
if status == embd.High {
|
|
||||||
fmt.Println("Alert temp has been reached!")
|
|
||||||
return
|
|
||||||
}
|
|
||||||
case <-cancel:
|
case <-cancel:
|
||||||
return
|
return
|
||||||
}
|
}
|
||||||
|
@ -324,7 +324,8 @@ func convertWordToTempC(temp uint16) float64 {
|
|||||||
|
|
||||||
tempRead := wholeNum + fraction
|
tempRead := wholeNum + fraction
|
||||||
|
|
||||||
if !(temp&(1<<12) == 0) { // read sign bit
|
// read sign bit
|
||||||
|
if temp>>12 == 1 {
|
||||||
tempRead *= -1
|
tempRead *= -1
|
||||||
}
|
}
|
||||||
return tempRead
|
return tempRead
|
||||||
@ -355,11 +356,7 @@ func (d *MCP9808) setTemp(reg byte, newTemp float64) error {
|
|||||||
roundedFrac = 4
|
roundedFrac = 4
|
||||||
}
|
}
|
||||||
newTempWord := signBit + uint16(wholeNum)*16 + roundedFrac*4
|
newTempWord := signBit + uint16(wholeNum)*16 + roundedFrac*4
|
||||||
|
return d.Bus.WriteWordToReg(address, reg, newTempWord)
|
||||||
if err := d.Bus.WriteWordToReg(address, reg, newTempWord); err != nil {
|
|
||||||
return err
|
|
||||||
}
|
|
||||||
return nil
|
|
||||||
}
|
}
|
||||||
|
|
||||||
// AmbientTemp reads the current sensor value along with the flags denoting what boundaries the
|
// AmbientTemp reads the current sensor value along with the flags denoting what boundaries the
|
||||||
|
Loading…
Reference in New Issue
Block a user