General-Purpose I/O Interface Function Documentation
Sys_GPIO_NMIConfig
void Sys_GPIO_NMIConfig(uint32_t config, uint32_t source, uint32_t polarity)
Location: gpio.h:80
Parameters
Direction | Name | Description |
---|---|---|
in |
config |
GPIO pin configuration if NMI is pad |
in |
source |
NMI source; use NMI_SRC_* |
in |
polarity |
NMI polarity; use NMI_ACTIVE_[LOW | HIGH] |
Example Code for Sys_GPIO_NMIConfig |
// Configure NMI input using GPIO 13 as active-low source without low-pass filter Sys_GPIO_NMIConfig(GPIO_LPF_ENABLE, NMI_SRC_GPIO_13, NMI_ACTIVE_LOW); |
Sys_GPIO_IntConfig
void Sys_GPIO_IntConfig(uint32_t index, uint32_t config, uint32_t dbnc_clk, uint32_t dbnc_cnt)
Location: gpio.h:105
Parameters
Direction | Name | Description |
---|---|---|
in |
index |
GPIO interrupt source to configure; use a constant |
in |
config |
GPIO interrupt configuration; use GPIO__INT_DEBOUNCE_[DISABLE | ENABLE], GPIO_INT_SRC_*, and GPIO_INT_EVENT_[NONE | HIGH_LEVEL | LOW_LEVEL | RISING_EDGE | FALLING_EDGE | TRANSITION] |
in |
dbnc_clk |
Interrupt button debounce filter clock; use GPIO_DEBOUNCE_SLOWCLK_DIV[32 | 1024] |
in |
dbnc_cnt |
Interrupt button debounce filter count |
Example Code for Sys_GPIO_IntConfig |
// configure GPIO interrupt channel 7 to use GPIO 11 as interrupt source, with // 1 debounce filter count. Sys_GPIO_IntConfig(7, (GPIO_INT_DEBOUNCE_ENABLE | GPIO_INT_SRC_GPIO_11), GPIO_DEBOUNCE_SLOWCLK_DIV1024, 1); |
Sys_GPIO_CM33JTAGConfig
void Sys_GPIO_CM33JTAGConfig(uint32_t config, uint8_t mode)
Location: gpio.h:130
Parameters
Direction | Name | Description |
---|---|---|
in |
config |
JTAG pad configuration; use JTMS_[NO_PULL | WEAK_PULL_UP | WEAK_PULL_DOWN | STRONG_PULL_UP], JTMS_[2X | 3X | 5X | 6X]_DRIVE, JTCK_[NO_PULL | WEAK_PULL_UP | WEAK_PULL_DOWN | STRONG_PULL_UP], JTMS_LPF_[DISABLED | ENABLED], and JTCK_LPF_[DISABLED | ENABLED] |
in |
mode |
Enable one of the two JTAG modes or SW mode; use 0 for SW mode, 1 for JTAG with reset enabled, and 2 for JTAG with reset disabled |
Example Code for Sys_GPIO_CM33JTAGConfig |
// Enable Arm Cortex-M3 SWJ-DP port and JTAG Sys_GPIO_CM33JTAGConfig(true, true); |
Sys_GPIO_Set_High
void Sys_GPIO_Set_High(uint32_t pad)
Location: gpio.h:160
Parameters
Direction | Name | Description |
---|---|---|
in |
pad |
GPIO pad to set high |
Example Code for Sys_GPIO_Set_High |
// Set GPIO2 high |
Sys_GPIO_Set_Low
void Sys_GPIO_Set_Low(uint32_t pad)
Location: gpio.h:171
Parameters
Direction | Name | Description |
---|---|---|
in |
pad |
GPIO pad to set low |
Example Code for Sys_GPIO_Set_Low |
// Set GPIO2 low |
Sys_GPIO_Toggle
void Sys_GPIO_Toggle(uint32_t pad)
Location: gpio.h:182
Parameters
Direction | Name | Description |
---|---|---|
in |
pad |
GPIO pad to toggle |
Example Code for Sys_GPIO_Toggle |
// Toggle the state of the GPIO2 pin |
Sys_GPIO_Read
uint32_t Sys_GPIO_Read(uint32_t pad)
Location: gpio.h:194
Parameters
Direction | Name | Description |
---|---|---|
in |
pad |
GPIO pad to set low |
Return
Example Code for Sys_GPIO_Read |
// Read the current value of the GPIO2 pin |
Sys_GPIO_Write
void Sys_GPIO_Write(uint32_t pad, bool value)
Location: gpio.h:206
Parameters
Direction | Name | Description |
---|---|---|
in |
pad |
GPIO pad to write value |
in |
value |
1 or 0 written to GPIO |
Example Code for Sys_GPIO_Write |
// Write a 1 to GPIO2 Sys_GPIO_Write(GPIO2, 1); |
Sys_GPIO_Set_SingleDirection
void Sys_GPIO_Set_SingleDirection(uint32_t pad, uint32_t dir)
Location: gpio.h:221
Parameters
Direction | Name | Description |
---|---|---|
in |
pad |
GPIO pad to write value |
in |
dir |
Input/output configuration settings for any GPIOs from 0 to 15 that are configured as GPIO pads; use GPIO*_DIR_IN, and GPIO*_DIR_OUT |
Example Code for Sys_GPIO_Set_SingleDirection |
// Set the direction of the GPIO2 pin Sys_GPIO_Set_SingleDirection(GPIO2, GPIO2_DIR_OUT); |
Sys_GPIO_Set_Direction
void Sys_GPIO_Set_Direction(uint32_t dir)
Location: gpio.h:244
Parameters
Direction | Name | Description |
---|---|---|
in |
dir |
Input/output configuration settings for any GPIOs from 0 to 15 that are configured as GPIO pads; use GPIO*_DIR_IN, and GPIO*_DIR_OUT |
Example Code for Sys_GPIO_Set_Direction |
// Set GPIO2 as an output Sys_GPIO_Set_Direction(GPIO2_DIR_OUT); |