moved stm32 into directory added noddy pcb

1 files changed, 0 insertions, 66 deletions

diff --git a/app/tacho.c b/app/tacho.c
deleted file mode 100644
index bf0222c..0000000
--- a/app/tacho.c
+++ /dev/null
@@ -1,66 +0,0 @@
-#include "project.h"
-
-#define  SPURIOUS MS(10)        /*Anything faster than 6000rpm is a false trigger */
-
-
-
-uint32_t raw_tacho;
-
-static uint32_t
-cycle_diff (uint32_t a, uint32_t b)
-{
-  return b - a;
-}
-
-
-
-void
-TACHO_ISR (void)
-{
-  uint32_t now, diff;
-  static uint32_t last_edge;
-
-  if (! (EXTI_PR & TACHO))
-    return;
-
-  EXTI_PR = TACHO;
-
-  now = dwt_read_cycle_counter();
-
-  diff = cycle_diff (last_edge, now);
-
-  if (diff < SPURIOUS)
-    return;
-
-  last_edge = now;
-
-
-  /* Want RPM, diff is in units of 1/72 us */
-
-  if (!diff)
-    return;
-
-  /* uint32_t is un-able to express 60s in clock ticks, so divide everything by 2 */
-
-  diff >>= 1;
-
-
-
-  raw_tacho = (US ((60U * 1000000) / 2)) / diff;
-
-}
-
-
-void
-tacho_init (void)
-{
-  MAP_INPUT_PU (TACHO);
-
-  exti_select_source (TACHO, TACHO_PORT);
-  exti_set_trigger (TACHO, EXTI_TRIGGER_FALLING);
-  exti_enable_request (TACHO);
-  exti_reset_request (TACHO);
-
-  nvic_enable_irq (TACHO_IRQ);
-
-}