From 027a587aa8ca06d4b781ddd2f6875a6d3dfe2db3 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <derf@finalrewind.org>
Date: Sat, 30 Jan 2021 19:19:20 +0100
Subject: msp430fr5994lp timer: add setup_hz for very low frequencies

---
 include/arch/msp430fr5994lp/driver/timer.h | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'include/arch/msp430fr5994lp/driver/timer.h')

diff --git a/include/arch/msp430fr5994lp/driver/timer.h b/include/arch/msp430fr5994lp/driver/timer.h
index c07ae4e..9a2c7fe 100644
--- a/include/arch/msp430fr5994lp/driver/timer.h
+++ b/include/arch/msp430fr5994lp/driver/timer.h
@@ -62,6 +62,13 @@ class Timer {
 			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;
+			TA0CTL |= TACLR;
+		}
 #endif
 
 		inline void start(unsigned char const interrupt) {
-- 
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