diff options
| author | Daniel Friesel <derf@finalrewind.org> | 2022-01-16 18:38:21 +0100 |
|---|---|---|
| committer | Daniel Friesel <derf@finalrewind.org> | 2022-01-16 18:38:21 +0100 |
| commit | 0d502cd0995600b1399c442697bfba5af4ae9deb (patch) | |
| tree | c6c923b6cd111603bbf267b0bfac300ab89b83ba | |
| parent | fb6e2fed7132ae776c62aecc2ee09ad532d482d3 (diff) | |
msp430fr timer: automatically set TA0CCR for low Hz values
| -rw-r--r-- | include/arch/msp430fr5969lp/driver/timer.h | 11 | ||||
| -rw-r--r-- | include/arch/msp430fr5994lp/driver/timer.h | 20 |
2 files changed, 19 insertions, 12 deletions
diff --git a/include/arch/msp430fr5969lp/driver/timer.h b/include/arch/msp430fr5969lp/driver/timer.h index c07ae4e..160074a 100644 --- a/include/arch/msp430fr5969lp/driver/timer.h +++ b/include/arch/msp430fr5969lp/driver/timer.h @@ -58,8 +58,15 @@ class Timer { inline void setup_hz(uint16_t const frequency) { // 2 MHz base TA0CTL = TASSEL__SMCLK | _TA0_MAIN_DIV; - TA0EX0 = 0; - TA0CCR0 = 2000000UL / frequency; + if (frequency < 32) { + // 2 MHz base + TA0EX0 = 7; + TA0CCR0 = 250000UL / frequency; + } else { + // 250 kHz base + TA0EX0 = 0; + TA0CCR0 = 2000000UL / frequency; + } TA0CTL |= TACLR; } #endif diff --git a/include/arch/msp430fr5994lp/driver/timer.h b/include/arch/msp430fr5994lp/driver/timer.h index 9a2c7fe..97bd302 100644 --- a/include/arch/msp430fr5994lp/driver/timer.h +++ b/include/arch/msp430fr5994lp/driver/timer.h @@ -56,17 +56,17 @@ class Timer { TA0CTL |= TACLR; } - inline void setup_hz(uint16_t const frequency) { // 2 MHz base + inline void setup_hz(uint16_t const frequency) { TA0CTL = TASSEL__SMCLK | _TA0_MAIN_DIV; - TA0EX0 = 0; - TA0CCR0 = 2000000UL / frequency; - TA0CTL |= TACLR; - } - - inline void setup_hz_low(uint16_t const frequency) { // 250 kHz base - TA0CTL = TASSEL__SMCLK | _TA0_MAIN_DIV; - TA0EX0 = 7; - TA0CCR0 = 250000UL / frequency; + if (frequency < 32) { + // 2 MHz base + TA0EX0 = 7; + TA0CCR0 = 250000UL / frequency; + } else { + // 250 kHz base + TA0EX0 = 0; + TA0CCR0 = 2000000UL / frequency; + } TA0CTL |= TACLR; } #endif |