cc2538 I/O Control

Files
file	ioc.c
	Implementation of IOC functions.
file	ioc.h
	Header file with declarations for the I/O Control module.

IOC Functions
void	ioc_init ()
	Initialise the IOC driver.
void	ioc_set_over (uint8_t port, uint8_t pin, uint8_t over)
	Set Port:Pin override function.
uint32_t	ioc_get_over (uint8_t port, uint8_t pin)
	Get Port:Pin override function.
void	ioc_set_sel (uint8_t port, uint8_t pin, uint8_t sel)
	Function select for Port:Pin.
#define	ioc_input_sel(port, pin)   ((port << 3) | pin)
	Generates an IOC_INPUT_SEL_PXn value from a port/pin number.

IOC Input Pin Select Registers
#define	IOC_UARTRXD_UART0   0x400D4100
	UART0 RX.
#define	IOC_UARTCTS_UART1   0x400D4104
	UART1 CTS.
#define	IOC_UARTRXD_UART1   0x400D4108
	UART1 RX.
#define	IOC_CLK_SSI_SSI0   0x400D410C
	SSI0 Clock.
#define	IOC_SSIRXD_SSI0   0x400D4110
	SSI0 RX.
#define	IOC_SSIFSSIN_SSI0   0x400D4114
	SSI0 FSSIN.
#define	IOC_CLK_SSIIN_SSI0   0x400D4118
	SSI0 Clock SSIIN.
#define	IOC_CLK_SSI_SSI1   0x400D411C
	SSI1 Clock.
#define	IOC_SSIRXD_SSI1   0x400D4120
	SSI1 RX.
#define	IOC_SSIFSSIN_SSI1   0x400D4124
	SSI1 FSSIN Select.
#define	IOC_CLK_SSIIN_SSI1   0x400D4128
	SSI1 Clock SSIIN.
#define	IOC_I2CMSSDA   0x400D412C
	I2C SDA.
#define	IOC_I2CMSSCL   0x400D4130
	I2C SCL.
#define	IOC_GPT0OCP1   0x400D4134
	GPT0OCP1.
#define	IOC_GPT0OCP2   0x400D4138
	GPT0OCP2.
#define	IOC_GPT1OCP1   0x400D413C
	GPT1OCP1.
#define	IOC_GPT1OCP2   0x400D4140
	GPT1OCP2.
#define	IOC_GPT2OCP1   0x400D4144
	GPT2OCP1.
#define	IOC_GPT2OCP2   0x400D4148
	GPT2OCP2.
#define	IOC_GPT3OCP1   0x400D414C
	GPT3OCP1.
#define	IOC_GPT3OCP2   0x400D4150
	GPT3OCP2.

I/O Control Register Bit Masks
#define	IOC_OVR_MASK   0x0000000F
	IOC_Pxn_OVER registers.
#define	IOC_PXX_SEL_MASK   0x0000001F
	IOC_Pxn_SEL registers.
#define	IOC_INPUT_SEL_MASK   0x0000001F
	All other IOC registers.

Values for IOC_PXX_OVER
#define	IOC_OVERRIDE_OE   0x00000008
	Output Enable.
#define	IOC_OVERRIDE_PUE   0x00000004
	Pull Up Enable.
#define	IOC_OVERRIDE_PDE   0x00000002
	Pull Down Enable.
#define	IOC_OVERRIDE_ANA   0x00000001
	Analog Enable.
#define	IOC_OVERRIDE_DIS   0x00000000
	Override Disabled.

Detailed Description

Driver for the cc2538 I/O Control Module

Macro Definition Documentation

ioc_input_sel

#define ioc_input_sel	(		port,
			pin )   ((port << 3) | pin)

Generates an IOC_INPUT_SEL_PXn value from a port/pin number.

Parameters

port	The port as a number (PA: 0, PB: 1 etc)
pin	The pin as a number

Returns

A value which can be written in the INPUT_SEL bits of various IOC registers

Definition at line 286 of file ioc.h.

Referenced by i2c_init(), and uart_init().

Function Documentation

ioc_get_over()

uint32_t ioc_get_over	(	uint8_t	port,
		uint8_t	pin )

Get Port:Pin override function.

Parameters

port	The port as a number (PA: 0, PB: 1 etc)
pin	The pin as a number

Returns

The override function

The return value can be one of

• IOC_OVERRIDE_OE: Output
• IOC_OVERRIDE_PUE: Pull-Up
• IOC_OVERRIDE_PDE: Pull-Down
• IOC_OVERRIDE_ANA: Analog
• IOC_OVERRIDE_DIS: Disabled

Definition at line 60 of file ioc.c.

Referenced by gpio_hal_arch_no_port_pin_cfg_get().

ioc_set_over()

void ioc_set_over	(	uint8_t	port,
		uint8_t	pin,
		uint8_t	over )

Set Port:Pin override function.

Parameters

port	The port as a number (PA: 0, PB: 1 etc)
pin	The pin as a number
over	The desired override configuration

over can take the following values:

• IOC_OVERRIDE_OE: Output
• IOC_OVERRIDE_PUE: Pull-Up
• IOC_OVERRIDE_PDE: Pull-Down
• IOC_OVERRIDE_ANA: Analog
• IOC_OVERRIDE_DIS: Disabled

Definition at line 54 of file ioc.c.

Referenced by configure(), gpio_hal_arch_no_port_pin_cfg_set(), i2c_init(), pwm_disable(), pwm_start(), pwm_stop(), rtcc_set_alarm_time_date(), spi_arch_lock_and_open(), spix_cs_init(), spix_init(), sys_ctrl_init(), and uart_init().

ioc_set_sel()

void ioc_set_sel	(	uint8_t	port,
		uint8_t	pin,
		uint8_t	sel )

Function select for Port:Pin.

Parameters

port	The port as a number (PA: 0, PB: 1 etc)
pin	The pin as a number
sel	The desired function

The value of sel can be any of the IOC_PXX_SEL_xyz defines. For example IOC_PXX_SEL_UART0_TXD will set the port to act as UART0 TX

Definition at line 66 of file ioc.c.

Referenced by i2c_init(), pwm_start(), spi_arch_lock_and_open(), spix_init(), and uart_init().