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Updates CC2538 GPIO 

1. Fixes two of the comments to GPIO macros. They were copied but not
updated.
2. Adds SET and CLR macros for controlling GPIO pins.
This commit is contained in:
Brad Campbell 2013-09-05 15:09:31 -04:00
parent 810f770e49
commit 982ca0fb46
1 changed files with 18 additions and 4 deletions
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22
cpu/cc2538/dev/gpio.h
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@ -100,6 +100,20 @@ typedef void (* gpio_callback_t)(uint8_t port, uint8_t pin);
#define GPIO_SET_OUTPUT(PORT_BASE, PIN_MASK) \
do { REG(PORT_BASE | GPIO_DIR) |= PIN_MASK; } while(0)
/** \brief Set pins with PIN_MASK of port with PORT_BASE high.
* \param PORT_BASE GPIO Port register offset
* \param PIN_MASK Pin number mask. Pin 0: 0x01, Pin 1: 0x02 ... Pin 7: 0x80
*/
#define GPIO_SET_PIN(PORT_BASE, PIN_MASK) \
do { REG((PORT_BASE | GPIO_DATA) + (PIN_MASK << 2)) = 0xFF; } while(0)
/** \brief Set pins with PIN_MASK of port with PORT_BASE low.
* \param PORT_BASE GPIO Port register offset
* \param PIN_MASK Pin number mask. Pin 0: 0x01, Pin 1: 0x02 ... Pin 7: 0x80
*/
#define GPIO_CLR_PIN(PORT_BASE, PIN_MASK) \
do { REG((PORT_BASE | GPIO_DATA) + (PIN_MASK << 2)) = 0x00; } while(0)
/** \brief Set pins with PIN_MASK of port with PORT_BASE to detect edge.
* \param PORT_BASE GPIO Port register offset
* \param PIN_MASK Pin number mask. Pin 0: 0x01, Pin 1: 0x02 ... Pin 7: 0x80
@ -162,16 +176,16 @@ typedef void (* gpio_callback_t)(uint8_t port, uint8_t pin);
#define GPIO_DISABLE_INTERRUPT(PORT_BASE, PIN_MASK) \
do { REG(PORT_BASE | GPIO_IE) &= ~PIN_MASK; } while(0)
/** \brief Enable interrupt triggering for pins with PIN_MASK of port with
* PORT_BASE.
/** \brief Configure the pin to be under peripheral control with PIN_MASK of
* port with PORT_BASE.
* \param PORT_BASE GPIO Port register offset
* \param PIN_MASK Pin number mask. Pin 0: 0x01, Pin 1: 0x02 ... Pin 7: 0x80
*/
#define GPIO_PERIPHERAL_CONTROL(PORT_BASE, PIN_MASK) \
do { REG(PORT_BASE | GPIO_AFSEL) |= PIN_MASK; } while(0)
/** \brief Disable interrupt triggering for pins with PIN_MASK of port with
* PORT_BASE.
/** \brief Configure the pin to be software controlled with PIN_MASK of port
* with PORT_BASE.
* \param PORT_BASE GPIO Port register offset
* \param PIN_MASK Pin number mask. Pin 0: 0x01, Pin 1: 0x02 ... Pin 7: 0x80
*/