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What is the length of instruction in the MSP430 family?
Instruction Set Summary MSP430 Family 5-8. 5.4 Clock cycles, Length of Instruction The operating speed of the CPU is independent from individual instructions. It depends on the instruction format and the addressing modes.
Why does the MSP430 not fire an interrupt?
If you set CCR1 (The Interrupt value for Timer A1) to a higher value than CCR0 it will never fire an Interrupt, because CCR0 is the „master“ timer. I ask myself at the Moment why the adding in this example does not cause an error when the value reaches a higher value than the microcontroller could handle.
What do you need to know about the MSP430 timer?
MSP430 Timers In-Depth © 2006 Texas Instruments Inc, Slide 1 MSP430 Timers In-Depth Keith Quiring MSP430 Applications Engineer Texas Instruments © 2006 Texas Instruments Inc, Slide 2 • Introduction • Basic Timer •RTC • Watchdog Timer (WDT/WDT+) • Timer_A • Timer_B • Summary and Applications
What does MC _ 2 mean in MSP430?
MC_2 is Setting it to Continuous Up mode what means it Counts up to the highest value available for the microcontroller (I do not know a lot about that, i mostly use MC_1, what means up to CCR0.) CCR0 is a Timer that clears ist Interrupt flag itself. That means if CCR0 (the value we set to 50000 before) is reached an Interrupt will be fired.
How many clock sources does the MSP430 have?
The MSP430 clock module can have up to four clock sources: DCOCLK: Internal digitally controller oscillator VLOCLK: Internal very low frequency oscillator (~12kHz)
What should the return type be on the MSP430?
Of course this code is specific for the MSP430, but the idea applies to any algorithm or calculation. Finally the return type follows the *nix standard where a signed integer is returned such that 0 indicates success and any other value is a failure. Again this is a personal preference but consistency is always good.
What kind of oscillator does the MSP430 use?
External oscillators are usually more accurate, but they add to cost and space on the board. For the purposes of these tutorials, using the internal oscillator shall be sufficient. The MSP430 clock module can have up to four clock sources: VLOCLK: Internal very low frequency oscillator (~12kHz)
What are the non maskable interrupts on the MSP430?
These are called non-maskable interrupts, or NMI. There are usually some interrupts on a device that are reserved as NMIs. NMIs are typically critical errors to which the software must respond and handle in order to continue execution. The MSP430 has three NMIs.
Are there any non recoverable exceptions on the MSP430?
On the MSP430, there is one non-recoverable exception, the illegal instruction fetch, which causes a reset. On some architectures, this exception can be handled and the handler may increment the program counter to the next address to try and skip over it.