cc2538_gpio.h File Reference
Driver for the cc2538 GPIO controller. More...
Detailed Description
Driver for the cc2538 GPIO controller.
Header file with register and macro declarations for the cc2538 GPIO module
Definition in file cc2538_gpio.h.
Include dependency graph for cc2538_gpio.h: This graph shows which files directly or indirectly include this file:Go to the source code of this file.
Data Structures | |
| struct | cc2538_gpio_t |
| GPIO port component registers. More... | |
| struct | cc2538_ioc_t |
| IOC port component registers. More... | |
Macros | |
| #define | GPIO_PORT_SHIFT 3 |
| Right-shift amount to obtain the port number from a GPIO number. | |
| #define | GPIO_BITS_PER_PORT ( 1 << GPIO_PORT_SHIFT ) |
| Number of bits per GPIO port (8) | |
| #define | GPIO_BIT_MASK ( GPIO_BITS_PER_PORT - 1 ) |
| Mask to obtain the bit number from a GPIO number. | |
| #define | PIN_MASK(n) ( 1 << (n) ) |
| Generate a bit mask in which only the specified bit is high. More... | |
| #define | GPIO_NUM_TO_PORT_NUM(gpio_num) ( (gpio_num) >> GPIO_PORT_SHIFT ) |
| Extract the GPIO port number (0-3) from a GPIO number (0-31) More... | |
| #define | GPIO_BIT_NUM(gpio_num) ( (gpio_num) & GPIO_BIT_MASK ) |
| Extract the GPIO port bit number (0-7) from a GPIO number (0-31) More... | |
| #define | GPIO_PXX_TO_NUM(port_num, bit_num) ( ((port_num) << GPIO_PORT_SHIFT) | (bit_num) ) |
| Generate a GPIO number given a port and bit number. More... | |
| #define | GPIO_NUM_TO_DEV(gpio_num) ( GPIO_A + GPIO_NUM_TO_PORT_NUM(gpio_num) ) |
| Obtain the GPIO port instance given a GPIO number (0-31) More... | |
| #define | gpio_hardware_control(gpio_num) ( GPIO_NUM_TO_DEV(gpio_num)->AFSEL |= PIN_MASK(GPIO_BIT_NUM(gpio_num)) ) |
| Enable hardware (peripheral) control for a given GPIO pin number. More... | |
| #define | gpio_software_control(gpio_num) ( GPIO_NUM_TO_DEV(gpio_num)->AFSEL &= ~PIN_MASK(GPIO_BIT_NUM(gpio_num)) ) |
| Enable software control for a given GPIO pin number. More... | |
| #define | gpio_dir_output(gpio_num) ( GPIO_NUM_TO_DEV(gpio_num)->DIR |= PIN_MASK(GPIO_BIT_NUM(gpio_num)) ) |
| Configure the given GPIO as an output. More... | |
| #define | gpio_dir_input(gpio_num) ( GPIO_NUM_TO_DEV(gpio_num)->DIR &= ~PIN_MASK(GPIO_BIT_NUM(gpio_num)) ) |
| Configure the given GPIO as an input. More... | |
| #define | cc2538_gpio_read(gpio_num) ( (GPIO_NUM_TO_DEV(gpio_num)->DATA >> GPIO_BIT_NUM(gpio_num)) & 1 ) |
| Read the value of the given pin. More... | |
| #define | cc2538_gpio_clear(gpio_num) ( GPIO_NUM_TO_DEV(gpio_num)->DATA &= ~PIN_MASK(GPIO_BIT_NUM(gpio_num)) ) |
| Set a specific GPIO output pin low. More... | |
| #define | GPIO_BASE (0x400d9000) |
| GPIO port instance base address. | |
| #define | IOC ((cc2538_ioc_t *)0x400d4000) |
| IOC instance definition. | |
Enumerations | |
| enum | cc2538_ioc_over_t { OVERRIDE_DISABLE = 0x0, OVERRIDE_ANALOG = 0x1, OVERRIDE_PULLDOWN = 0x2, OVERRIDE_PULLUP = 0x4, OVERRIDE_ENABLE = 0x8 } |
| Values to override pin configuration. | |
Numeric representation of the four GPIO ports | |
| enum | { PORT_A = 0, PORT_B = 1, PORT_C = 2, PORT_D = 3 } |
Unique names for each GPIO port/pin combination | |
| |
| enum | { GPIO_PA0 = GPIO_PXX_TO_NUM(PORT_A, 0), GPIO_PA1 = GPIO_PXX_TO_NUM(PORT_A, 1), GPIO_PA2 = GPIO_PXX_TO_NUM(PORT_A, 2), GPIO_PA3 = GPIO_PXX_TO_NUM(PORT_A, 3), GPIO_PA4 = GPIO_PXX_TO_NUM(PORT_A, 4), GPIO_PA5 = GPIO_PXX_TO_NUM(PORT_A, 5), GPIO_PA6 = GPIO_PXX_TO_NUM(PORT_A, 6), GPIO_PA7 = GPIO_PXX_TO_NUM(PORT_A, 7), GPIO_PB0 = GPIO_PXX_TO_NUM(PORT_B, 0), GPIO_PB1 = GPIO_PXX_TO_NUM(PORT_B, 1), GPIO_PB2 = GPIO_PXX_TO_NUM(PORT_B, 2), GPIO_PB3 = GPIO_PXX_TO_NUM(PORT_B, 3), GPIO_PB4 = GPIO_PXX_TO_NUM(PORT_B, 4), GPIO_PB5 = GPIO_PXX_TO_NUM(PORT_B, 5), GPIO_PB6 = GPIO_PXX_TO_NUM(PORT_B, 6), GPIO_PB7 = GPIO_PXX_TO_NUM(PORT_B, 7), GPIO_PC0 = GPIO_PXX_TO_NUM(PORT_C, 0), GPIO_PC1 = GPIO_PXX_TO_NUM(PORT_C, 1), GPIO_PC2 = GPIO_PXX_TO_NUM(PORT_C, 2), GPIO_PC3 = GPIO_PXX_TO_NUM(PORT_C, 3), GPIO_PC4 = GPIO_PXX_TO_NUM(PORT_C, 4), GPIO_PC5 = GPIO_PXX_TO_NUM(PORT_C, 5), GPIO_PC6 = GPIO_PXX_TO_NUM(PORT_C, 6), GPIO_PC7 = GPIO_PXX_TO_NUM(PORT_C, 7), GPIO_PD0 = GPIO_PXX_TO_NUM(PORT_D, 0), GPIO_PD1 = GPIO_PXX_TO_NUM(PORT_D, 1), GPIO_PD2 = GPIO_PXX_TO_NUM(PORT_D, 2), GPIO_PD3 = GPIO_PXX_TO_NUM(PORT_D, 3), GPIO_PD4 = GPIO_PXX_TO_NUM(PORT_D, 4), GPIO_PD5 = GPIO_PXX_TO_NUM(PORT_D, 5), GPIO_PD6 = GPIO_PXX_TO_NUM(PORT_D, 6), GPIO_PD7 = GPIO_PXX_TO_NUM(PORT_D, 7) } |
GPIO shift and masking | |
| #define | GPIO_PORTNUM_SHIFT (12U) |
| bit shift for GPIO port | |
| #define | GPIO_PORTNUM_MASK (0x00007000) |
| bit mask for GPIO port [0-3] | |
| #define | GPIO_PIN_MASK (0x00000007) |
| bit mask for GPIO pin [0-7] | |
| #define | GPIO_PORT_MASK (0xfffff000) |
| bit mask for GPIO port addr | |
GPIO instance definitions | |
| |
| #define | GPIO_A ((cc2538_gpio_t *)0x400d9000) |
| GPIO Port A instance. | |
| #define | GPIO_B ((cc2538_gpio_t *)0x400da000) |
| GPIO Port B instance. | |
| #define | GPIO_C ((cc2538_gpio_t *)0x400db000) |
| GPIO Port C instance. | |
| #define | GPIO_D ((cc2538_gpio_t *)0x400dc000) |
| GPIO Port D instance. | |
Peripheral Signal Select Values (for IOC_Pxx_SEL registers) | |
| enum | cc2538_ioc_sel_t { UART0_TXD = 0, UART1_RTS, UART1_TXD, SSI0_TXD, SSI0_CLK_OUT, SSI0_FSS_OUT, SSI0_TX_SER, SSI1_TXD, SSI1_CLK_OUT, SSI1_FSS_OUT, SSI1_TX_SER, I2C_SDA_OUT, I2C_SCL_OUT, GPT0_ICP1, GPT0_ICP2, GPT1_ICP1, GPT1_ICP2, GPT2_ICP1, GPT2_ICP2, GPT3_ICP1, GPT3_ICP2 } |
Pin select for periphical functions | |
| enum | cc2538_ioc_pin_t { UART0_RXD = 0, UART1_CTS, UART1_RXD, SSI0_CLK, SSI0_RXD, SSI0_FSS_IN, SSI0_CLK_IN, SSI1_CLK, SSI1_RXD, SSI1_FSS_IN, SSI1_CLK_IN, I2C_SDA_IN, I2C_SCL_IN, GPT0_OCP1, GPT0_OCP2, GPT1_OCP1, GPT1_OCP2, GPT2_OCP1, GPT2_OCP2, GPT3_OCP1, GPT3_OCP2 } |
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. | |
Port control register addresses | |
| |
| #define | IOC_PXX_OVER (IOC->OVER) |
| #define | IOC_PXX_SEL (IOC->SEL) |
