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xtensa/esp32s3: Add support for GPIO read/write operations

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Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
This commit is contained in:
Gustavo Henrique Nihei 2022-03-18 17:34:02 -03:00 committed by Masayuki Ishikawa
parent 68902d8732
commit 0e67dc8637
2 changed files with 120 additions and 9 deletions
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92
arch/xtensa/src/esp32s3/esp32s3_gpio.c
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@ -24,21 +24,20 @@
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <assert.h>
#include <debug.h>
#include <stdbool.h>
#include <stdint.h>
#include <sys/types.h>
#include <nuttx/arch.h>
#include <nuttx/irq.h>
#include <arch/irq.h>
#include "xtensa.h"
#include "esp32s3_irq.h"
#include "hardware/esp32s3_iomux.h"
#include "hardware/esp32s3_gpio.h"
#include "esp32s3_gpio.h"
#include "esp32s3_irq.h"
#include "hardware/esp32s3_gpio.h"
#include "hardware/esp32s3_iomux.h"
/****************************************************************************
* Pre-processor Definitions
@ -198,12 +197,89 @@ int esp32s3_configgpio(uint32_t pin, gpio_pinattr_t attr)
return OK;
}
/****************************************************************************
* Name: esp32s3_gpiowrite
*
* Description:
* Write one or zero to the selected GPIO pin.
*
* Input Parameters:
* pin - GPIO pin to be written.
* value - Value to be written to the GPIO pin. True will output
* 1 (one) to the GPIO, while false will output 0 (zero).
*
* Returned Value:
* None.
*
****************************************************************************/
void esp32s3_gpiowrite(int pin, bool value)
{
DEBUGASSERT(is_valid_gpio(pin));
if (value)
{
if (pin < 32)
{
putreg32(UINT32_C(1) << pin, GPIO_OUT_W1TS_REG);
}
else
{
putreg32(UINT32_C(1) << (pin - 32), GPIO_OUT1_W1TS_REG);
}
}
else
{
if (pin < 32)
{
putreg32(UINT32_C(1) << pin, GPIO_OUT_W1TC_REG);
}
else
{
putreg32(UINT32_C(1) << (pin - 32), GPIO_OUT1_W1TC_REG);
}
}
}
/****************************************************************************
* Name: esp32s3_gpioread
*
* Description:
* Read one or zero from the selected GPIO pin.
*
* Input Parameters:
* pin - GPIO pin to be read.
*
* Returned Value:
* True in case the read value is 1 (one). If 0 (zero), then false will be
* returned.
*
****************************************************************************/
bool esp32s3_gpioread(int pin)
{
uint32_t regval;
DEBUGASSERT(is_valid_gpio(pin));
if (pin < 32)
{
regval = getreg32(GPIO_IN_REG);
return ((regval >> pin) & 1) != 0;
}
else
{
regval = getreg32(GPIO_IN1_REG);
return ((regval >> (pin - 32)) & 1) != 0;
}
}
/****************************************************************************
* Name: esp32s3_gpio_matrix_in
*
* Description:
* Set GPIO input to a signal.
* NOTE: one GPIO can input to several signals.
* NOTE: one GPIO can receive inputs from several signals.
*
* Input Parameters:
* pin - GPIO pin to be configured.

37
arch/xtensa/src/esp32s3/esp32s3_gpio.h
View File

@ -154,12 +154,47 @@ extern "C"
int esp32s3_configgpio(uint32_t pin, gpio_pinattr_t attr);
/****************************************************************************
* Name: esp32s3_gpiowrite
*
* Description:
* Write one or zero to the selected GPIO pin.
*
* Input Parameters:
* pin - GPIO pin to be written.
* value - Value to be written to the GPIO pin. True will output
* 1 (one) to the GPIO, while false will output 0 (zero).
*
* Returned Value:
* None.
*
****************************************************************************/
void esp32s3_gpiowrite(int pin, bool value);
/****************************************************************************
* Name: esp32s3_gpioread
*
* Description:
* Read one or zero from the selected GPIO pin.
*
* Input Parameters:
* pin - GPIO pin to be read.
*
* Returned Value:
* True in case the read value is 1 (one). If 0 (zero), then false will be
* returned.
*
****************************************************************************/
bool esp32s3_gpioread(int pin);
/****************************************************************************
* Name: esp32s3_gpio_matrix_in
*
* Description:
* Set GPIO input to a signal.
* NOTE: one GPIO can input to several signals.
* NOTE: one GPIO can receive inputs from several signals.
*
* Input Parameters:
* pin - GPIO pin to be configured.