Alp Sayin
/
FastPWM
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Revision 11:e0a8f0fcb1c9, committed 2014-07-16
- Comitter:
- Sissors
- Date:
- Wed Jul 16 15:44:21 2014 +0000
- Parent:
- 10:36362e9067b0
- Child:
- 12:4600daab8a83
- Commit message:
- K20D50M added
Changed in this revision
| Device/FastPWM_KLXX.cpp | Show diff for this revision Revisions of this file |
| Device/FastPWM_KLXX_K20D50M.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/Device/FastPWM_KLXX.cpp Fri Jun 27 06:18:23 2014 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,53 +0,0 @@
-#ifdef TARGET_KLXX
-
-#include "FastPWM.h"
-
-void FastPWM::initFastPWM( void ) {
- bits = 16;
-}
-
-void FastPWM::pulsewidth_ticks( uint32_t ticks ) {
- *(_pwm.CnV) = ticks;
-}
-
-void FastPWM::period_ticks( uint32_t ticks ) {
- *(_pwm.MOD) = ticks - 1;
-}
-
-uint32_t FastPWM::getPeriod( void ) {
- return *(_pwm.MOD) + 1;
-}
-
-uint32_t FastPWM::setPrescaler(uint32_t reqScale) {
-
- //Yes this is ugly, yes I should feel bad about it
- volatile uint32_t *TPM_SC = _pwm.MOD - 2;
-
- const char prescalers[] = {1, 2, 4, 8, 16, 32, 64, 128};
-
- //If prescaler is 0, return current one
- if (reqScale == 0)
- return (prescalers[(*TPM_SC) & 0x07]);
-
- uint32_t retval = 0;
- char bin;
-
- for (bin = 0; bin<8; bin++) {
- retval = prescalers[bin];
- if (retval >= reqScale)
- break;
- }
-
- //Clear lower 5 bits, write new value:
- char clockbits = *TPM_SC & (3<<3);
-
- //For some reason clearing them takes some effort
- while ((*TPM_SC & 0x1F) != 0)
- *TPM_SC &= ~0x1F;
-
-
- *TPM_SC |= bin + clockbits;
-
- return retval;
-}
-#endif
\ No newline at end of file
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Device/FastPWM_KLXX_K20D50M.cpp Wed Jul 16 15:44:21 2014 +0000
@@ -0,0 +1,53 @@
+#if defined(TARGET_KLXX) || defined(TARGET_K20D50M)
+
+#include "FastPWM.h"
+
+void FastPWM::initFastPWM( void ) {
+ bits = 16;
+}
+
+void FastPWM::pulsewidth_ticks( uint32_t ticks ) {
+ *(_pwm.CnV) = ticks;
+}
+
+void FastPWM::period_ticks( uint32_t ticks ) {
+ *(_pwm.MOD) = ticks - 1;
+}
+
+uint32_t FastPWM::getPeriod( void ) {
+ return *(_pwm.MOD) + 1;
+}
+
+uint32_t FastPWM::setPrescaler(uint32_t reqScale) {
+
+ //Yes this is ugly, yes I should feel bad about it
+ volatile uint32_t *TPM_SC = _pwm.MOD - 2;
+
+ const char prescalers[] = {1, 2, 4, 8, 16, 32, 64, 128};
+
+ //If prescaler is 0, return current one
+ if (reqScale == 0)
+ return (prescalers[(*TPM_SC) & 0x07]);
+
+ uint32_t retval = 0;
+ char bin;
+
+ for (bin = 0; bin<8; bin++) {
+ retval = prescalers[bin];
+ if (retval >= reqScale)
+ break;
+ }
+
+ //Clear lower 5 bits, write new value:
+ char clockbits = *TPM_SC & (3<<3);
+
+ //For some reason clearing them takes some effort
+ while ((*TPM_SC & 0x1F) != 0)
+ *TPM_SC &= ~0x1F;
+
+
+ *TPM_SC |= bin + clockbits;
+
+ return retval;
+}
+#endif
\ No newline at end of file