From a2b18b75d4bc68aa93edf67509185cb6e18f596b Mon Sep 17 00:00:00 2001
From: Scott Shawcroft <scott.shawcroft@gmail.com>
Date: Fri, 16 Feb 2018 10:05:28 -0800
Subject: Fix loops and comma style.

---
 ports/atmel-samd/common-hal/pulseio/PWMOut.c   |  2 +-
 ports/atmel-samd/common-hal/pulseio/PulseOut.c |  2 +-
 ports/atmel-samd/timers.c                      | 20 ++++++++++----------
 3 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/ports/atmel-samd/common-hal/pulseio/PWMOut.c b/ports/atmel-samd/common-hal/pulseio/PWMOut.c
index cbcdeb03c..c68ea6985 100644
--- a/ports/atmel-samd/common-hal/pulseio/PWMOut.c
+++ b/ports/atmel-samd/common-hal/pulseio/PWMOut.c
@@ -156,7 +156,7 @@ void common_hal_pulseio_pwmout_construct(pulseio_pwmout_obj_t* self,
             direction = 1;
             start = 0;
         }
-        for (uint8_t i = start; i >= 0 && i < NUM_TIMERS_PER_PIN && timer == NULL; i += direction) {
+        for (int8_t i = start; i >= 0 && i < NUM_TIMERS_PER_PIN && timer == NULL; i += direction) {
             const pin_timer_t* t = &pin->timer[i];
             if ((!t->is_tc && t->index >= TCC_INST_NUM) ||
                 (t->is_tc && t->index >= TC_INST_NUM)) {
diff --git a/ports/atmel-samd/common-hal/pulseio/PulseOut.c b/ports/atmel-samd/common-hal/pulseio/PulseOut.c
index d0cf8e666..95b0bbee0 100644
--- a/ports/atmel-samd/common-hal/pulseio/PulseOut.c
+++ b/ports/atmel-samd/common-hal/pulseio/PulseOut.c
@@ -98,7 +98,7 @@ void common_hal_pulseio_pulseout_construct(pulseio_pulseout_obj_t* self,
     if (refcount == 0) {
         // Find a spare timer.
         Tc *tc = NULL;
-        uint8_t index = TC_INST_NUM - 1;
+        int8_t index = TC_INST_NUM - 1;
         for (; index >= 0; index--) {
             if (tc_insts[index]->COUNT16.CTRLA.bit.ENABLE == 0) {
                 tc = tc_insts[index];
diff --git a/ports/atmel-samd/timers.c b/ports/atmel-samd/timers.c
index 7b85c5b26..7b5d06cb0 100644
--- a/ports/atmel-samd/timers.c
+++ b/ports/atmel-samd/timers.c
@@ -46,10 +46,10 @@ const uint8_t tc_gclk_ids[TC_INST_NUM] = {TC3_GCLK_ID,
                TC4_GCLK_ID,
                TC5_GCLK_ID,
 #ifdef TC6_GCLK_ID
-             , TC6_GCLK_ID
+               TC6_GCLK_ID,
 #endif
 #ifdef TC7_GCLK_ID
-             , TC7_GCLK_ID
+               TC7_GCLK_ID,
 #endif
             };
 const uint8_t tcc_gclk_ids[3] = {TCC0_GCLK_ID, TCC1_GCLK_ID, TCC2_GCLK_ID};
@@ -59,18 +59,18 @@ const uint8_t tcc_cc_num[5] = {6, 4, 3, 2, 2};
 const uint8_t tc_gclk_ids[TC_INST_NUM] = {TC0_GCLK_ID,
                                           TC1_GCLK_ID,
                                           TC2_GCLK_ID,
-                                          TC3_GCLK_ID
+                                          TC3_GCLK_ID,
 #ifdef TC4_GCLK_ID
-                                          , TC4_GCLK_ID
+                                          TC4_GCLK_ID,
 #endif
 #ifdef TC5_GCLK_ID
-                                          , TC5_GCLK_ID
+                                          TC5_GCLK_ID,
 #endif
 #ifdef TC6_GCLK_ID
-                                          , TC6_GCLK_ID
+                                          TC6_GCLK_ID,
 #endif
 #ifdef TC7_GCLK_ID
-                                          , TC7_GCLK_ID
+                                          TC7_GCLK_ID,
 #endif
                                       };
 const uint8_t tcc_gclk_ids[5] = {TCC0_GCLK_ID, TCC1_GCLK_ID, TCC2_GCLK_ID, TCC3_GCLK_ID,
@@ -91,12 +91,12 @@ IRQn_Type const tc_irq[TC_INST_NUM] = {
 #endif
     TC3_IRQn,
     TC4_IRQn,
-    TC5_IRQn
+    TC5_IRQn,
 #ifdef TC6
-    , TC6_IRQn
+    TC6_IRQn,
 #endif
 #ifdef TC7
-    , TC7_IRQn
+    TC7_IRQn,
 #endif
 };
 
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