Contents
How to stop a timer MSP430?
Configuring & Setting Up Timer in MSP430 Timer may be stopped by using TACCR0 = 0; and can be started/restarted any time by writing a non-zero compare value in TACCR0 whenever Timer is to be used.
What are the modes for MSP430 timer timer A?
Timer A is a 16 bit Timer/Counter with 3 capture compare registers. The Timer can be clocked either by SMCLK, ACLK,TACLK or INCLK. If you are not familiar with SMCLK or ACLK,You can check out the Clock system of MSP430 here.
What is MSP430 timer?
Timers are often thought of as the heartbeat of an embedded system. Whether you need a periodic wake-up call, a one-time delay, or need a means to verify the system is running without failure, timers are the solution. This chapter begins with a brief summary of the MSP430 timers.
How will you enable only the timer interrupt and disable other interrupts?
I am working on timer interrupts and external interrupts. for external interrupts I understood the functions like attachInterrupt. detachinterrupt for individual interrupts ,noInterrupts() and interrupts() can be used to enable and disable all interrupts at a time.
In which mode is Mclk and Smclk both disabled?
LPM0
LPM0 – Both CPU and MCLK are disabled. SMCLK and ACLK remain active.
What is Smclk?
The name “SMCLK” stands for “Sub-Main CLocK”. It is usually assumed, that SMCLK and MCLK are synchronous (derived from the same oscillation source) and SMCLK is an integral fraction of MCLK. Peripherals driven by SMCLK can be accessed by the CPU without racing conditions on hardware level.
When the timer mode is either up or up down the timer may be stopped by writing 0 to?
TAxCCR0
When the timer mode is either up or up/down, the timer may be stopped by writing 0 to TAxCCR0. The timer may then be restarted by writing a nonzero value to TAxCCR0. In this scenario, the timer starts incrementing in the up direction from zero.
Is timer A interrupt?
The CPU then executes code for a key interrupt, which typically displays a character on a screen or performs a task. Perhaps the most important interrupt for operating system design is the “timer interrupt”, which is emitted at regular intervals by a timer chip.
What is Mclk in MSP430?
The master clock (MCLK) is derived from any of the four oscillators, and it drives the cpu. The sub-main clock (SMCLK) is derived from any of the four oscillators, and it drives peripherals. The auxiliary clock (ACLK) is derived from either VLOCLK or LFXT1CLK, and it drives peripherals.
Which clocks are active in LPM3?
LPM3 – CPU, MCLK, SMCLK, DCO and DC generator are disabled. ACLK is active. LPM4 – CPU and all clocks disabled.
What is MSP430 Smclk?
The sub-main clock (SMCLK) is derived from any of the four oscillators, and it drives peripherals. The auxiliary clock (ACLK) is derived from either VLOCLK or LFXT1CLK, and it drives peripherals.