28.2.74 __builtin_write_PWMSFR

Description

Writes the PWM unlock sequence to the SFR pointed to by PWM_KEY and then writes value to the SFR pointed to by PWM_sfr

Prototype

void __builtin_write_PWMSFR(volatile unsigned int *PWM_sfr,

unsigned int value, volatile unsigned int *PWM_KEY);

Argument

PWM_sfr – register to be written

value – value to write

PWM_KEY – hardware unlock key location

Return Value

None

Assembler Operator/ Machine Instruction

mov   #PWM_KEY, w3
mov   #value, w2
mov   #0x4321, w1
mov   #0xABCD, w0
mov   w1,[w3]
mov   w0,[w3]
mov   w2,[w3]

Error Messages

None

Examples

Example 1:

__builtin_write_PWMSFR(&PWM1CON1, 0x123, &PWM1KEY);

Example 2:

__builtin_write_PWMSFR(&P1FLTACON, 0x123, &PWMKEY);

The choice of PWM_KEY may depend upon architecture.