Diff: Device/FastPWM_LPC1768.cpp

Revision:

0:731591dec10a

diff -r 000000000000 -r 731591dec10a Device/FastPWM_LPC1768.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Device/FastPWM_LPC1768.cpp	Fri Apr 16 09:26:06 2021 +0000
@@ -0,0 +1,34 @@
+#ifdef TARGET_LPC176X
+
+#include "FastPWM.h"
+
+void FastPWM::initFastPWM( void ) {
+    //Set clock source
+    LPC_SC->PCLKSEL0|=1<<12;
+    bits = 32;
+}
+
+void FastPWM::pulsewidth_ticks( uint32_t ticks ) {
+    *(_pwm.MR) = ticks;
+    LPC_PWM1->LER |= 1 << _pwm.pwm;
+}
+
+void FastPWM::period_ticks( uint32_t ticks ) {
+    LPC_PWM1->MR0 = ticks;
+    LPC_PWM1->LER |= 1 << 0;
+}
+
+uint32_t FastPWM::getPeriod( void ) {
+    return LPC_PWM1->MR0;
+}
+
+//Maybe implemented later, but needing to change the prescaler for a 32-bit
+//timer used in PWM mode is kinda unlikely.
+//If you really need to do it, rejoice, you can make it run so slow a period is over 40,000 year
+uint32_t FastPWM::setPrescaler(uint32_t reqScale) {
+    //Disable dynamic prescaling
+    dynamicPrescaler = false;
+    
+    return 1;
+}
+#endif
\ No newline at end of file