adc for random number generation not yet working

2024-03-20 21:56:19 +01:00
parent 8c995f66ff
commit 50486f6ec0
5 changed files with 44 additions and 12 deletions
--- a/game-ctrl/myrand.c
+++ b/game-ctrl/myrand.c
@ -0,0 +1,24 @@
+#include <stdint.h>
+#include <msp430g2553.h>
+
+#include "myrand.h"
+
+void myRandInit() {
+  ADC10CTL0 = SREF_1 | ADC10SHT_1 | ADC10SR | REFON | ADC10ON;
+  ADC10CTL1 = INCH_10;
+}
+
+uint8_t myRandGet() {
+  ADC10CTL0 |= ENC | ADC10SC;
+
+  while ((ADC10CTL0 & ADC10IFG) == 0);
+  
+  uint16_t n = ADC10MEM;
+  uint8_t r = n & 0x00ff;
+
+  ADC10CTL0 &= ~(ADC10IFG | ENC);
+
+  return r;
+}
+
+