tc_etu: Don't confiugre unused TIOA pin of TC0 + TC2
When initializing the TC blocks, let's only configure the GPIO pins TCLK
and TIOB, and not the unused TIOA pin. That pin is actually used for
(separate) different functions in both qmod and owhw.
diff --git a/firmware/libcommon/source/tc_etu.c b/firmware/libcommon/source/tc_etu.c
index 76ce77d..f3eb039 100644
--- a/firmware/libcommon/source/tc_etu.c
+++ b/firmware/libcommon/source/tc_etu.c
@@ -25,17 +25,17 @@
#include "chip.h"
-/* pins for Channel 0 of TC-block 0 */
+/* pins for Channel 0 of TC-block 0, we only use TCLK + TIOB */
#define PIN_TCLK0 {PIO_PA4, PIOA, ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT }
#define PIN_TIOA0 {PIO_PA0, PIOA, ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT}
#define PIN_TIOB0 {PIO_PA1, PIOA, ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT}
-static const Pin pins_tc0[] = { PIN_TCLK0, PIN_TIOA0, PIN_TIOB0 };
+static const Pin pins_tc0[] = { PIN_TCLK0, PIN_TIOB0 };
-/* pins for Channel 2 of TC-block 0 */
+/* pins for Channel 2 of TC-block 0, we only use TCLK + TIOB */
#define PIN_TCLK2 {PIO_PA29, PIOA, ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT}
#define PIN_TIOA2 {PIO_PA26, PIOA, ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT}
#define PIN_TIOB2 {PIO_PA27, PIOA, ID_PIOA, PIO_PERIPH_B, PIO_DEFAULT}
-static const Pin pins_tc2[] = { PIN_TCLK2, PIN_TIOA2, PIN_TIOB2 };
+static const Pin pins_tc2[] = { PIN_TCLK2, PIN_TIOB2 };
struct tc_etu_state {
/* total negotiated waiting time (default = 9600) */
@@ -158,7 +158,7 @@
switch (chan_nr) {
case 0:
- /* Configure PA4(TCLK0), PA0(TIOA0), PA1(TIB0) */
+ /* Configure PA4(TCLK0), PA1(TIB0) */
PIO_Configure(pins_tc0, ARRAY_SIZE(pins_tc0));
PMC_EnablePeripheral(ID_TC0);
/* route TCLK0 to XC2 */
@@ -171,7 +171,7 @@
te->chan = &TC0->TC_CHANNEL[0];
break;
case 2:
- /* Configure PA29(TCLK2), PA26(TIOA2), PA27(TIOB2) */
+ /* Configure PA29(TCLK2), PA27(TIOB2) */
PIO_Configure(pins_tc2, ARRAY_SIZE(pins_tc2));
PMC_EnablePeripheral(ID_TC2);
/* route TCLK2 to XC2. TC0 really means TCA in this case */