typos

common/i2c.c

@@ -26,7 +26,7 @@
 
 volatile unsigned long c;
 
-// Direct use the loop to delay. 6 instructions loop, Masterclock 48Mhz,
+// Direct use the loop to delay. 6 instructions loop, Masterclock 48MHz,
 // delay=1 is about 200kbps
 // timer.
 // I2CSpinDelayClk(4) = 12.31us
@@ -41,7 +41,7 @@ void __attribute__((optimize("O0"))) I2CSpinDelayClk(uint16_t delay) {
 
 #define  ISO7618_MAX_FRAME 255
 
-// try i2c bus recovery at 100kHz = 5uS high, 5uS low
+// try i2c bus recovery at 100kHz = 5us high, 5us low
 void I2C_recovery(void) {
 
     DbpString("Performing i2c bus recovery");

common/iso15693tools.h

@@ -82,8 +82,8 @@ char *Iso15693sprintUID(char *target, uint8_t *uid);
 
 // SOF defined as
 // 1) Unmodulated time of 56.64us
-// 2) 24 pulses of 423.75khz
-// 3) logic '1' (unmodulated for 18.88us followed by 8 pulses of 423.75khz)
+// 2) 24 pulses of 423.75kHz
+// 3) logic '1' (unmodulated for 18.88us followed by 8 pulses of 423.75kHz)
 
 static const int Iso15693FrameSOF[] = {
     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
@@ -109,8 +109,8 @@ static const int Iso15693Logic1[] = {
     };
 
 // EOF defined as
-// 1) logic '0' (8 pulses of 423.75khz followed by unmodulated for 18.88us)
-// 2) 24 pulses of 423.75khz
+// 1) logic '0' (8 pulses of 423.75kHz followed by unmodulated for 18.88us)
+// 2) 24 pulses of 423.75kHz
 // 3) Unmodulated time of 56.64us
 static const int Iso15693FrameEOF[] = {
     1,  1,  1,  1,

common/usb_cdc.c

@@ -446,8 +446,8 @@ AT91S_CDC_LINE_CODING line = { // purely informative, actual values don't matter
     8                // 8 Data bits
 };
 
-// timer counts in 21.3uS increments (1024/48Mhz), rounding applies
-// WARNING: timer can't measure more than 1.39s (21.3uS * 0xffff)
+// timer counts in 21.3us increments (1024/48MHz), rounding applies
+// WARNING: timer can't measure more than 1.39s (21.3us * 0xffff)
 static void SpinDelay(int ms) {
     int us = ms * 1000;
     int ticks = ((MCK / 1000000) * us + 512) >> 10;