Maxim Integrated MAX32600, Руководство пользователя

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MAX32600 User’s Guide System Clock, Timers/Counters, Watchdog Timers and Real Time Clock 10.4 Timers/Counters
2. Write to the Timer register to set the starting count value, TMRn_COUNT16_0.value or TMRn_COUNT16_1.value , depending on which one of the 16-bit timers
is being used
• This only affects the first, starting, operation
• After the first Timer Compare in Continuous Mode, counting always begins at the reset value of 0x0001
3. Write the Compare Count value, TMRn_TERM_CNT16_0.term_count or TMRn_TERM_CNT16_1.term_count
4. If desired, enable the timer interrupt, TMRn_INTEN.timer0 or TMRn_INTEN.timer1
5. Enable timer and start counting, TMRn_CTRL.enable0 or TMRn_CTRL.enable1 = "1"
In Continuous Mode, the currently selected System Clock always provides the timer input. The timer period is given by the following equation:
Continuous Timeout Period
(
s
) =
ReloadValue
SystemClockFrequency
(
Hz
)
×
Prescale
If an initial starting value other than 0x0001 is loaded into the Timer register, the One-Shot Mode equation must be used to determine the first time-out period.
10.4.4 Registers (TMR)
10.4.4.1 Module TMR Registers
Address Register
32b
Word Len Description
0x40012000 TMR0_CTRL 1 Timer Control Register
0x40012004 TMR0_COUNT32 1 [32 bit] Current Count Value
0x40012008 TMR0_TERM_CNT32 1 [32 bit] Terminal Count Setting
0x4001200C TMR0_PWM_CAP32 1 [32 bit] PWM Compare Setting or Capture/Measure Value
0x40012010 TMR0_COUNT16_0 1 [16 bit] Current Count Value, 16-bit Timer 0
0x40012014 TMR0_TERM_CNT16_0 1 [16 bit] Terminal Count Setting, 16-bit Timer 0
0x40012018 TMR0_COUNT16_1 1 [16 bit] Current Count Value, 16-bit Timer 1
0x4001201C TMR0_TERM_CNT16_1 1 [16 bit] Terminal Count Setting, 16-bit Timer 1
0x40012020 TMR0_INTFL 1 Timer Module Interrupt Flags
0x40012024 TMR0_INTEN 1 Timer Module Interrupt Enable/Disable Settings
Rev.1.3 April 2015 Maxim Integrated Page 598