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Contiki 2.6
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Many of the supplied example applications use these microcontroller functions. More...
Defines | |
| #define | MICRO_DISABLE_WATCH_DOG_KEY 0xA5 |
| The value that must be passed as the single parameter to halInternalDisableWatchDog() in order to sucessfully disable the watchdog timer. | |
| #define | PORTA_PIN(y) (PORTA|y) |
| Some registers and variables require indentifying GPIO by a single number instead of the port and pin. | |
| #define | PORTB_PIN(y) (PORTB|y) |
| Some registers and variables require indentifying GPIO by a single number instead of the port and pin. | |
| #define | PORTC_PIN(y) (PORTC|y) |
| Some registers and variables require indentifying GPIO by a single number instead of the port and pin. | |
| #define | PORTx_PIN(x, y) (x|y) |
| Some registers and variables require indentifying GPIO by a single number instead of the port and pin. | |
Functions | |
| void | halInit (void) |
| Initializes microcontroller-specific peripherals. | |
| void | halReboot (void) |
| Restarts the microcontroller and therefore everything else. | |
| void | halPowerUp (void) |
| Powers up microcontroller peripherals and board peripherals. | |
| void | halPowerDown (void) |
| Powers down microcontroller peripherals and board peripherals. | |
| void | halInternalEnableWatchDog (void) |
| Enables the watchdog timer. | |
| void | halInternalDisableWatchDog (int8u magicKey) |
| Disables the watchdog timer. | |
| boolean | halInternalWatchDogEnabled (void) |
| Determines whether the watchdog has been enabled or disabled. | |
| void | halCommonDelayMicroseconds (int16u us) |
| Blocks the current thread of execution for the specified amount of time, in microseconds. | |
| StStatus | halBootloaderStart (int8u mode, int8u channel, int16u panId) |
| Request the appplication to enter in bootloader mode. | |
| void | halInternalResetWatchDog (void) |
| Resets the watchdog timer. | |
| void | halGpioConfig (int32u io, int32u config) |
| Configure an IO pin's operating mode. | |
| void | halGpioSet (int32u io, boolean value) |
| Set/Clear single GPIO bit. | |
| void | halInternalCalibrateSlowRc (void) |
| Calibrates the internal SlowRC to generate a 1024 Hz (1kHz) clock. | |
| void | halInternalCalibrateFastRc (void) |
| Calibrates the internal FastRC to generate a 12Mhz clock. | |
| void | halInternalSetRegTrim (boolean boostMode) |
| Sets the trim values for the 1.8V and 1.2V regulators based upon manufacturing configuration. | |
| int16u | stMeasureVddSlow (void) |
| Takes a slow ADC measurement of VDD_PADS in millivolts. | |
| int16u | stMeasureVddFast (void) |
| Takes a fast ADC measurement of VDD_PADS in millivolts. | |
| void | halCommonCalibratePads (void) |
| Calibrates the GPIO pads. | |
| void | halCommonCheckXtalBiasTrim (void) |
| This function is intended to be called periodically, from the stack and application, to check the XTAL bias trim is within appropriate levels and adjust if not. | |
| void | halInternalSwitchToXtal (void) |
| Switches to running off of the 24MHz crystal, including changing the CPU to be 24MHz (FCLK sourced from SYSCLK). | |
| void | halInternalSearchForBiasTrim (void) |
| Search for optimal 24MHz crystal bias trim, assuming no valid prior value. | |
| void | halCommonDelayMilliseconds (int16u ms) |
| Blocks the current thread of execution for the specified amount of time, in milliseconds. | |
| void | halSleepWithOptions (SleepModes sleepMode, int32u gpioWakeBitMask) |
| Puts the microcontroller to sleep in a specified mode, allows the GPIO wake sources to be determined at runtime. | |
| StStatus | halSleepForQsWithOptions (int32u *duration, int32u gpioWakeBitMask) |
| Uses the system timer to enter ::SLEEPMODE_WAKETIMER for approximately the specified amount of time (provided in quarter seconds), the GPIO wake sources can be provided at runtime. | |
| void | halInternalIdleSleep (void) |
| Provides access to assembly code which triggers idle sleep. | |
| void | halInternalSleep (SleepModes sleepMode) |
| Puts the microcontroller to sleep in a specified mode. | |
| int32u | halGetWakeInfo (void) |
| Obtains the events that caused the last wake from sleep. | |
| void | halCommonSeedRandom (int32u seed) |
| Seeds the halCommonGetRandom() pseudorandom number generator. | |
| int16u | halCommonGetRandom (void) |
| Runs a standard LFSR to generate pseudorandom numbers. | |
Many of the supplied example applications use these microcontroller functions.
See also hal/micro/cortexm3/micro.h for source code.
See hal/micro/micro-common.h for source code.
| #define PORTA_PIN | ( | y | ) | (PORTA|y) |
Some registers and variables require indentifying GPIO by a single number instead of the port and pin.
This macro converts Port A pins into a single number.
Definition at line 36 of file micro-common.h.
Referenced by halBoardPowerUp().
| #define PORTB_PIN | ( | y | ) | (PORTB|y) |
Some registers and variables require indentifying GPIO by a single number instead of the port and pin.
This macro converts Port B pins into a single number.
Definition at line 42 of file micro-common.h.
Referenced by halBoardPowerDown(), halBoardPowerUp(), halInternalSleep(), and uartInit().
| #define PORTC_PIN | ( | y | ) | (PORTC|y) |
Some registers and variables require indentifying GPIO by a single number instead of the port and pin.
This macro converts Port C pins into a single number.
Definition at line 48 of file micro-common.h.
Referenced by halBoardPowerUp().
| #define PORTx_PIN | ( | x, | |
| y | |||
| ) | (x|y) |
Some registers and variables require indentifying GPIO by a single number instead of the port and pin.
This macro converts Port C pins into a single number.
Definition at line 55 of file micro-common.h.
Referenced by halBoardPowerDown(), halBoardPowerUp(), halInitButton(), and leds_arch_init().
| StStatus halBootloaderStart | ( | int8u | mode, |
| int8u | channel, | ||
| int16u | panId | ||
| ) |
Request the appplication to enter in bootloader mode.
This function will check whwther the user flash contains the bootloader and if yes it will jump into it according to the user parameters.
| mode | The bootloader mode, 0 UART mode, 1 RF mode. All other values are reserved |
| channel | The channel where the booloader will operate. 0 means default channel (only vaild for RF mode). |
| panID | The panID where the booloader will operate. 0xFFFF means default panID (only vaild for RF mode). |
Definition at line 130 of file micro.c.
References halReboot(), IAP_BOOTLOADER_APP_SWITCH_SIGNATURE, IAP_BOOTLOADER_DEFAULT_CHANNEL, IAP_BOOTLOADER_MODE_OTA, and IAP_BOOTLOADER_MODE_UART.
| void halCommonCalibratePads | ( | void | ) |
Calibrates the GPIO pads.
This function is called from within the stack and HAL at appropriate times.
Definition at line 192 of file micro-common-internal.c.
References stMeasureVddFast().
Referenced by halPowerUp().
| void halCommonCheckXtalBiasTrim | ( | void | ) |
This function is intended to be called periodically, from the stack and application, to check the XTAL bias trim is within appropriate levels and adjust if not.
This function is *not* designed to be used before halInternalSwitchToXtal() has been called.
| void halCommonDelayMicroseconds | ( | int16u | us | ) |
Blocks the current thread of execution for the specified amount of time, in microseconds.
The function is implemented with cycle-counted busy loops and is intended to create the short delays required when interfacing with hardware peripherals.
The accuracy of the timing provided by this function is not specified, but a general rule is that when running off of a crystal oscillator it will be within 10us. If the micro is running off of another type of oscillator (e.g. RC) the timing accuracy will potentially be much worse.
| us | The specified time, in microseconds. Values should be between 1 and 65535 microseconds. |
Definition at line 250 of file micro-common-internal.c.
Referenced by halCommonDelayMilliseconds(), halInternalCalibrateFastRc(), and halInternalCalibrateSlowRc().
| void halCommonDelayMilliseconds | ( | int16u | ms | ) |
Blocks the current thread of execution for the specified amount of time, in milliseconds.
The function is implemented with cycle-counted busy loops and is intended to create the short delays required when interfacing with hardware peripherals. This function works by simply adding another layer on top of halCommonDelayMicroseconds().
| ms | The specified time, in milliseconds. |
Definition at line 284 of file micro-common-internal.c.
References halCommonDelayMicroseconds().
| int16u halCommonGetRandom | ( | void | ) |
Runs a standard LFSR to generate pseudorandom numbers.
Called by the MAC in the stack to choose random backoff slots.
Complicated implementations may improve the MAC's ability to avoid collisions in large networks, but it is critical to implement this function to return quickly.
| void halCommonSeedRandom | ( | int32u | seed | ) |
Seeds the halCommonGetRandom() pseudorandom number generator.
It should be called by the application during initialization with a seed from the radio randon number generator.
| seed | A seed for the pseudorandom number generator. |
| int32u halGetWakeInfo | ( | void | ) |
Obtains the events that caused the last wake from sleep.
The meaning of each bit is as follows:
WakeInfoValid means that halSleepWithOptions (halInternalSleep) has been called at least once. Since the power on state clears the wake event info, this bit says the sleep code has been called since power on.
SleepSkipped means that the chip never left the running state. Sleep can be skipped if any wake event occurs between going ATOMIC and transferring control from the CPU to the power management state machine. Sleep can also be skipped if the debugger is connected (JTAG/SerialWire CSYSPWRUPREQ signal is set). The net affect of skipping sleep is the Low Voltage domain never goes through a power/reset cycle.
| void halGpioConfig | ( | int32u | io, |
| int32u | config | ||
| ) |
Configure an IO pin's operating mode.
| io | The io pin to use, can be specified with the convenience macros PORTA_PIN(), PORTB_PIN(), PORTC_PIN() |
| config | The configuration mode to use. |
Definition at line 48 of file micro-common.c.
Referenced by halBoardPowerDown(), halBoardPowerUp(), halInitButton(), halInitLed(), leds_arch_init(), temperatureSensor_Init(), and uartInit().
| void halGpioSet | ( | int32u | io, |
| boolean | value | ||
| ) |
Set/Clear single GPIO bit.
| io | The io pin to use, can be specified with the convenience macros PORTA_PIN(), PORTB_PIN(), PORTC_PIN() |
| value | A flag indicating whether to set or clear the io. |
Definition at line 63 of file micro-common.c.
References BIT.
Referenced by halBoardPowerDown(), halBoardPowerUp(), halClearLed(), halInitButton(), and halSetLed().
| void halInternalDisableWatchDog | ( | int8u | magicKey | ) |
Disables the watchdog timer.
| magicKey | A value (MICRO_DISABLE_WATCH_DOG_KEY) that enables the function. |
Definition at line 31 of file micro-common.c.
References MICRO_DISABLE_WATCH_DOG_KEY.
Referenced by halInternalSleep().
| void halInternalResetWatchDog | ( | void | ) |
Resets the watchdog timer.
This function is pointed to by the macro halResetWatchdog().
Definition at line 25 of file micro-common.c.
| void halInternalSearchForBiasTrim | ( | void | ) |
Search for optimal 24MHz crystal bias trim, assuming no valid prior value.
This function is typically called during initialization of the microcontroller.
Definition at line 338 of file clocks.c.
Referenced by halInternalSwitchToXtal().
| void halInternalSetRegTrim | ( | boolean | boostMode | ) |
Sets the trim values for the 1.8V and 1.2V regulators based upon manufacturing configuration.
| boostMode | Alter the regulator trim based upon the state of boost mode. TRUE if boost mode is active, FALSE otherwise. |
Definition at line 202 of file micro-common-internal.c.
Referenced by halInit().
| void halInternalSleep | ( | SleepModes | sleepMode | ) |
Puts the microcontroller to sleep in a specified mode.
This internal function performs the actual sleep operation. This function assumes all of the wake source registers are configured properly.
| sleepMode | A microcontroller sleep mode |
Definition at line 127 of file sleep.c.
References BIT, BIT32, FALSE, halInternalDisableWatchDog(), halInternalEnableWatchDog(), halInternalIdleSleep(), halInternalWatchDogEnabled(), INTERRUPTS_OFF, INTERRUPTS_ON, MICRO_DISABLE_WATCH_DOG_KEY, PORTB_PIN, and TRUE.
Referenced by halSleepWithOptions().
| void halInternalSwitchToXtal | ( | void | ) |
Switches to running off of the 24MHz crystal, including changing the CPU to be 24MHz (FCLK sourced from SYSCLK).
The switch function will respect the BIASTRIM HI and LO flags and adjust bias trim until appropriate crystal biasing is used. This function is called from within the stack and HAL at appropriate times.
| boolean halInternalWatchDogEnabled | ( | void | ) |
Determines whether the watchdog has been enabled or disabled.
Definition at line 39 of file micro-common.c.
Referenced by halInternalSleep().
| StStatus halSleepForQsWithOptions | ( | int32u * | duration, |
| int32u | gpioWakeBitMask | ||
| ) |
Uses the system timer to enter ::SLEEPMODE_WAKETIMER for approximately the specified amount of time (provided in quarter seconds), the GPIO wake sources can be provided at runtime.
This function returns ::ST_SUCCESS and the duration parameter is decremented to 0 after sleeping for the specified amount of time. If an interrupt occurs that brings the chip out of sleep, the function returns ::ST_SLEEP_INTERRUPTED and the duration parameter reports the amount of time remaining out of the original request.
| duration | The amount of time, expressed in quarter seconds, that the micro should be placed into ::SLEEPMODE_WAKETIMER. When the function returns, this parameter provides the amount of time remaining out of the original sleep time request (normally the return value will be 0). |
| gpioWakeBitMask | A bit mask of the GPIO that are allowed to wake the chip from deep sleep. A high bit in the mask will enable waking the chip if the corresponding GPIO changes state. bit0 is PA0, bit1 is PA1, bit8 is PB0, bit16 is PCO, bit23 is PC7, bits[31:24] are ignored. |
Definition at line 168 of file system-timer.c.
References TRUE.
| void halSleepWithOptions | ( | SleepModes | sleepMode, |
| int32u | gpioWakeBitMask | ||
| ) |
Puts the microcontroller to sleep in a specified mode, allows the GPIO wake sources to be determined at runtime.
This function requires the GPIO wake sources to be defined at compile time in the board file.
| sleepMode | A microcontroller sleep mode. |
| gpioWakeBitMask | A bit mask of the GPIO that are allowed to wake the chip from deep sleep. A high bit in the mask will enable waking the chip if the corresponding GPIO changes state. bit0 is PA0, bit1 is PA1, bit8 is PB0, bit16 is PCO, bit23 is PC7, bits[31:24] are ignored. |
Definition at line 848 of file sleep.c.
References halInternalSleep().
Referenced by main().
| int16u stMeasureVddFast | ( | void | ) |
Takes a fast ADC measurement of VDD_PADS in millivolts.
Due to the conversions performed, this function takes slightly under 150us with a variation across successive conversions approximately +/-20mv of the average conversion.
Definition at line 140 of file micro-common-internal.c.
Referenced by halCommonCalibratePads().
| int16u stMeasureVddSlow | ( | void | ) |
Takes a slow ADC measurement of VDD_PADS in millivolts.
Due to the conversions performed, this function takes slightly under 3.2ms with a variation across successive conversions approximately +/-2mv of the average conversion.
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