Infineon CCU6 Interrupt 1 Manual de usuario

AURIX™ TC2xx Microcontroller Training

V1.0.0

CCU6_Interrupt_1

CCU6 interrupt generation

Please read the Important Notice and Warnings at the end of this document

Scope of work

The CCU6 unit generates an interrupt every 500 ms and increments a

counter in its Interrupt Service Routine (ISR).

Timer T12 of the CCU6 unit generates an interrupt on a "period match" event

every 500 ms. Inside the ISR, a counter variable is incremented. The LEDs

toggle based on the value of the counter:

›1st LED: counter % 4 == 0

›2nd LED: counter % 4 == 1

›3rd LED: counter % 4 == 2

›4th LED: counter % 4 == 3

Introduction

›The Capture/Compare Unit 6 (CCU6) is a high-resolution 16-bit capture

and compare unit with application specific modes, mainly used for AC

drive control.

›The CCU6 unit is made up of a Timer T12 Block with three

capture/compare channels and a Timer T13 Block with one compare

channel. In this example, Timer T12 Block is used.

›Among other features, the CCU6 has the capability to generate

interrupts when its count reaches a predefined period value (16-bit).

Hardware setup

This code example has been

developed for the board

KIT_AURIX_TC297_TFT_BC-Step.

Implementation

Configure and control the LEDs

The LEDs can be switched on/off by controlling the port pins to which they are connected using methods from

the iLLD headers IfxPort.h.

In the setup phase, the port pins connected to the LEDs are configured as push-pull output mode using the

function IfxPort_setPinMode().

During program execution, the LEDs are switched on and off using the function IfxPort_setPinState().

Implementation

Configure the CCU6 unit

Configuration of the CCU6 Timer is done by initializing an instance of the IfxCcu6_Timer_Config structure,

which contains the following fields:

›base –a structure that allows to set:

–frequency –input clock frequency in Hz of the timer module

–period –16-bit register that determines the maximum count value for the timer

›timer –a parameter that allows to choose which of the two timers to configure

›interrupt1 –a structure that allows to set:

–priority –priority of the generated interrupt by CCU6. It can be a value from 0 to 255, with 0 meaning

interrupt is disabled, and 255 is the highest priority

–type of service –defines the service provider responsible for handling the interrupt, which can be any

of the available CPUs, or the DMA

›trigger –a structure for configuring the trigger, that allows to start Timer T13 in sync with Timer T12

The function IfxCcu6_Timer_initModuleConfig() fills the configuration structure with default values and

IfxCcu6_Timer_initModule() function initializes the timer module with the user configuration.

Both functions can be found in the iLLD header IfxCcu6_Timer.h.

Implementation

Timer module frequency

In Timer Mode, the input clock of the timer module is derived from the internal module clock fCC6.

By default, the internal module clock fCC6 is initialized by the iLLDs to run at 100 MHz.

The initialization is done by the function IfxScuCcu_init() that can be found in the iLLD header IfxScuCcu.h.

Starting from this value, it is possible to set the timer module frequency to the following exact values:

100000000 Hz = 100 MHz ( fCC6 )

50000000 Hz = 50 MHz ( fCC6 / 2 )

25000000 Hz = 25 MHz ( fCC6 / 4 )

12500000 Hz = 12.5 MHz ( fCC6 / 8 )

6250000 Hz = 6.25 MHz ( fCC6 / 16 )

3125000 Hz ~ 3 MHz ( fCC6 / 32 )

1562500 Hz ~ 1.5 MHz ( fCC6 / 64 )

781250 Hz ~ 780 KHz ( fCC6 / 128 )

390625 Hz ~ 390 KHz ( fCC6 / 256 )

195312.5 Hz ~ 200 KHz ( fCC6 / 512 )

97656.25 Hz ~ 100 KHz ( fCC6 / 1024 )

48828.12 Hz ~ 50 KHz ( fCC6 / 2048 )

24414.06 Hz ~ 25 KHz ( fCC6 / 4096 )

12207.03 Hz ~ 12.5 KHz ( fCC6 / 8192 )

6103.51 Hz ~ 6 KHz ( fCC6 / 16384 )

3051.75 Hz ~ 3 KHz ( fCC6 / 32768 )

Note: Any value can be set as frequency parameter, but the software will round up the chosen value to the

nearest higher frequency listed in the above table (e.g. setting timerConfig.base.t12Frequency = 400000

the timer will run at 781250 Hz).

Implementation

ISR Frequency calculation

To calculate the actual ISR frequency fISR (rate at which the ISR is triggered by the CCU6), two parameters

have to be considered: CCU6 clock frequency and period.

›The CCU6 clock frequency can be freely selected as discussed in the previous slide

›The period value is stored in a 16-bit register, which limits its maximum value to 65535.

The ISR frequency can then be calculated as:

fISR = (CCU6 clock frequency) / (period + 1)

Implementation

Period calculation example

Target: set a period frequency of fISR = 10 Hz

Considering the maximum value of the period (65535) and the final ISR frequency that needs to be achieved

(10 Hz), the ISR frequency formula from the previous slide leads to the following:

10 Hz = ( CCU6 clock frequency ) / ( period + 1 ) = ( CCU6 clock frequency ) / ( 65535 + 1 )

which leads to: CCU6 clock frequency = ( 65535 + 1 ) * 10 Hz = 655360 Hz

Since the maximum value of 65535 for the period cannot be exceeded, it is needed to search into the previous

table for the nearest lower exact frequency available, which is 390625 Hz.

Taking this value, the period can be easily re-calculated as:

period = ( CCU6 clock frequency / fISR ) –1 = ( 390625 / 10 ) – 1 ≈ 39061

Finally, selecting these values as period and CCU6 clock frequency, fISR can be calculated:

fISR = ( CCU6 clock frequency ) / ( period + 1 ) = 390625 / 39062 ≈ 10 Hz

Run and Test

After code compilation and flashing

the device, observe the behavior of

the LEDs.

›Check that LEDs D107, D108,

D109, D110 (1) are blinking

in sequence and changing their

state every 500 ms!

Tabla de contenidos

Otros manuales de Unidad de control de Infineon

Infineon

Infineon AIROC CYW20835 Manual de usuario

Infineon

Infineon SPI CPU 1 Manual de usuario

Infineon

Infineon CCU6 PWM Capture 1 Manual de usuario

Infineon

Infineon Cypress CYBLE-014008-00 Manual de usuario

Infineon

Infineon HybridPACK 2 Guía del usuario

Infineon

Infineon Cypress CYBLE-212020-01 Manual de usuario

Infineon

Infineon GPT12 Timer Concatenation 1 Guía de instalación

Infineon

Infineon GTM ATOM PWM 1 Manual de usuario

Infineon

Infineon REF-AIRCON-C302A-IM564 Manual de usuario

Infineon

Infineon ASCLIN LIN Master 1 Manual de usuario

Infineon

Infineon FCE CRC 1 Manual de usuario

Infineon

Infineon PressFIT Manual de usuario

Infineon

Infineon TLE9263BQXV33 Manual de usuario

Infineon

Infineon PG-LQFP Manual de usuario

Infineon

Infineon ERU Interrupt 1 Manual de usuario

Infineon

Infineon AIROC CYW20829B0-P4TAI100 Manual de usuario

Infineon

Infineon Multicore 1 Manual de usuario

Infineon

Infineon GTM ATOM PWM 1 Manual de usuario

Infineon

Infineon Cypress EZ-BLE CYBLE-012011-00 Manual de usuario

Infineon

Infineon UART VCOM 1 Manual de usuario

Infineon

Infineon GPT12 Timer Concatenation 1 Manual de usuario

Infineon

Infineon SPI DMA 1 Manual de usuario

Infineon

Infineon GTM TIM Capture 1 Manual de usuario

Infineon

Infineon REF MA5332BTLSPS Manual de usuario

Manuales populares de Unidad de control de otras marcas

Festo

Festo Compact Performance CP-FB6-E Manual de lista de piezas

Elo TouchSystems

Elo TouchSystems DMS-SA19P-EXTME Manual de usuario

JS Automation

JS Automation MPC3034A Manual de usuario

JAUDT

JAUDT SW GII 6406 Series Guía rápida

Spektrum

Spektrum Air Module System Manual de usuario

BOC Edwards

BOC Edwards Q Series Manual de usuario

KHADAS

KHADAS BT Magic Manual de usuario

Etherma

Etherma eNEXHO-IL Manual de usuario

PMFoundations

PMFoundations Attenuverter Manual de usuario

GEA

GEA VARIVENT Manual de usuario

Walther Systemtechnik

Walther Systemtechnik VMS-05 Manual de usuario

Altronix

Altronix LINQ8PD Instrucciones de montaje

Eaton

Eaton Powerware Series Manual de usuario

WAGO

WAGO 750-407/040-000 Manual de usuario

Sony

Sony CCU-590 Manual de usuario

Graco

Graco 25D614 Manual de usuario

Task Force Tips

Task Force Tips YE-RF-900 Manual de programación

Shini

Shini SPV-U Series Manual de usuario