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authorFlorian Heilmann <Florian.Heilmann@gmx.net>2019-01-13 02:14:50 +0100
committerKevinOConnor <kevin@koconnor.net>2019-01-12 20:14:50 -0500
commit6256599a6dfc0c52a3c5e019c470d4cc46feeb82 (patch)
tree4453913a6178a06e3f58dbfc530e6d65291473d3 /src/samd21/timer.c
parent432e6c490a229f71d608ec0391773ab7f90534d1 (diff)
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src: Rename source folders for atsam and atsamd architectures
Signed-off-by: Florian Heilmann <Florian.Heilmann@gmx.net>
Diffstat (limited to 'src/samd21/timer.c')
-rw-r--r--src/samd21/timer.c66
1 files changed, 0 insertions, 66 deletions
diff --git a/src/samd21/timer.c b/src/samd21/timer.c
deleted file mode 100644
index 882b4c10..00000000
--- a/src/samd21/timer.c
+++ /dev/null
@@ -1,66 +0,0 @@
-// SAMD21 timer interrupt scheduling
-//
-// Copyright (C) 2018 Kevin O'Connor <kevin@koconnor.net>
-//
-// This file may be distributed under the terms of the GNU GPLv3 license.
-
-#include "board/irq.h" // irq_disable
-#include "board/misc.h" // timer_read_time
-#include "board/timer_irq.h" // timer_dispatch_many
-#include "internal.h" // enable_pclock
-#include "samd21.h" // TC4
-#include "sched.h" // DECL_INIT
-
-// Set the next irq time
-static void
-timer_set(uint32_t value)
-{
- TC4->COUNT32.CC[0].reg = value;
- TC4->COUNT32.INTFLAG.reg = TC_INTFLAG_MC0;
-}
-
-// Return the current time (in absolute clock ticks).
-uint32_t
-timer_read_time(void)
-{
- return TC4->COUNT32.COUNT.reg;
-}
-
-// Activate timer dispatch as soon as possible
-void
-timer_kick(void)
-{
- timer_set(timer_read_time() + 50);
-}
-
-void
-timer_init(void)
-{
- // Supply power and clock to the timer
- enable_pclock(TC3_GCLK_ID, PM_APBCMASK_TC3);
- enable_pclock(TC4_GCLK_ID, PM_APBCMASK_TC4);
-
- // Configure the timer
- TcCount32 *tc = &TC4->COUNT32;
- irqstatus_t flag = irq_save();
- tc->CTRLA.reg = 0;
- tc->CTRLA.reg = TC_CTRLA_MODE_COUNT32;
- NVIC_SetPriority(TC4_IRQn, 2);
- NVIC_EnableIRQ(TC4_IRQn);
- tc->INTENSET.reg = TC_INTENSET_MC0;
- tc->COUNT.reg = 0;
- timer_kick();
- tc->CTRLA.reg = TC_CTRLA_MODE_COUNT32 | TC_CTRLA_ENABLE;
- irq_restore(flag);
-}
-DECL_INIT(timer_init);
-
-// IRQ handler
-void __visible __aligned(16) // aligning helps stabilize perf benchmarks
-TC4_Handler(void)
-{
- irq_disable();
- uint32_t next = timer_dispatch_many();
- timer_set(next);
- irq_enable();
-}