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So I am using the CY8CKIT-042 PSoc 4 Pioneer Kit, and I am using two pins for capsense, one as a sensor and one as a driven shield. At a certain point I would like to switch these pins, one to be a 5v signal and one to read an analog sensor.
I looked at https://www.cypress.com/file/122336/download
at the HSIOC section and I think I would need to switch capsense to be GPIO as follows.
CY_SET_REG32(CYDEV_HSIOM_BASE, CYVAL_HSIOM_SEL0_GPIO);
Is this right? And now how do I setup these pins as a high signal and an analog sensor now that they are GPIO?
so far I have performed my capsense function, and I have written CY_SET_REG32(CYDEV_HSIOM_BASE, CYVAL_HSIOM_SEL0_GPIO); to change the pins to be GPIO
Solved! Go to Solution.
- Labels:
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ispn:39611:1:0
-
l1:314:1:0
- Tags:
- capsense
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Hi,
To change the pin mode to Analog you have to set the HSIOM_SEL0[3:0] directly to AMUXBUSA or AMUXBUSB. You don't need to use GPIO mode in between. Please refer corresponding port's HSIOM_SEL0 bit definitions in the register TRM of PSoC 4200. For example please refer page number 185 of the architecture TRM.
https://www.cypress.com/file/136296/download
After changing the pin to analog mode you have to disable the input buffer of the pin. For this please refer to the register PRT_PCx register.
It is not possible to connect the pins to 5V unless the VDDIO is 5V. If VDDIO is 5 volts you can connect the pin to 5V. These are the following steps:
1. Change the HSIOM_SEL0 of the pin to GPIO.
2. Change the drive mode of the pin to Resistive pull-up.
3. Write 1 to the pin.
Thanks
Ganesh
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Hi,
To change the pin mode to Analog you have to set the HSIOM_SEL0[3:0] directly to AMUXBUSA or AMUXBUSB. You don't need to use GPIO mode in between. Please refer corresponding port's HSIOM_SEL0 bit definitions in the register TRM of PSoC 4200. For example please refer page number 185 of the architecture TRM.
https://www.cypress.com/file/136296/download
After changing the pin to analog mode you have to disable the input buffer of the pin. For this please refer to the register PRT_PCx register.
It is not possible to connect the pins to 5V unless the VDDIO is 5V. If VDDIO is 5 volts you can connect the pin to 5V. These are the following steps:
1. Change the HSIOM_SEL0 of the pin to GPIO.
2. Change the drive mode of the pin to Resistive pull-up.
3. Write 1 to the pin.
Thanks
Ganesh