From 2f3a0e9b7ee191f21dd419b9826f5c176b01afa0 Mon Sep 17 00:00:00 2001
From: Francisco Molina <femolina@uc.cl>
Date: Thu, 19 Mar 2020 16:16:50 +0100
Subject: [PATCH 1/3] boards: fix CORE_CLOCK for cc2538 based boards

---
 boards/cc2538dk/include/periph_conf.h          | 7 +++++++
 boards/common/remote/include/cfg_clk_default.h | 2 +-
 boards/openmote-b/include/periph_conf.h        | 2 +-
 boards/openmote-cc2538/include/periph_conf.h   | 2 +-
 4 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/boards/cc2538dk/include/periph_conf.h b/boards/cc2538dk/include/periph_conf.h
index 492cc16735..469aa52ff1 100644
--- a/boards/cc2538dk/include/periph_conf.h
+++ b/boards/cc2538dk/include/periph_conf.h
@@ -26,6 +26,13 @@
 extern "C" {
 #endif
 
+/**
+ * @name    Clock system configuration
+ * @{
+ */
+#define CLOCK_CORECLOCK     (16000000U)     /* desired core clock frequency, 16MHz */
+/** @} */
+
 /**
  * @name    Timer configuration
  *
diff --git a/boards/common/remote/include/cfg_clk_default.h b/boards/common/remote/include/cfg_clk_default.h
index 12cc651a7c..419be08f9f 100644
--- a/boards/common/remote/include/cfg_clk_default.h
+++ b/boards/common/remote/include/cfg_clk_default.h
@@ -30,7 +30,7 @@ extern "C" {
  * @name Clock system configuration
  * @{
  */
-#define CLOCK_CORECLOCK     (32000000U) /* 32MHz */
+#define CLOCK_CORECLOCK     (16000000U) /* 16MHz */
 /** @} */
 
 #ifdef __cplusplus
diff --git a/boards/openmote-b/include/periph_conf.h b/boards/openmote-b/include/periph_conf.h
index a01002cd0b..f52e331411 100644
--- a/boards/openmote-b/include/periph_conf.h
+++ b/boards/openmote-b/include/periph_conf.h
@@ -33,7 +33,7 @@
  * @name    Clock system configuration
  * @{
  */
-#define CLOCK_CORECLOCK     (32000000U)     /* desired core clock frequency, 32MHz */
+#define CLOCK_CORECLOCK     (16000000U)     /* desired core clock frequency, 16MHz */
 /** @} */
 
 /**
diff --git a/boards/openmote-cc2538/include/periph_conf.h b/boards/openmote-cc2538/include/periph_conf.h
index 7b96ad749e..cb371d8bd6 100644
--- a/boards/openmote-cc2538/include/periph_conf.h
+++ b/boards/openmote-cc2538/include/periph_conf.h
@@ -31,7 +31,7 @@
  * @name    Clock system configuration
  * @{
  */
-#define CLOCK_CORECLOCK     (32000000U)     /* desired core clock frequency, 32MHz */
+#define CLOCK_CORECLOCK     (16000000U)     /* desired core clock frequency, 16MHz */
 /** @} */
 
 /**

From 226e1b5daf22fb5b60d8274c047d14f514facb45 Mon Sep 17 00:00:00 2001
From: Francisco Molina <femolina@uc.cl>
Date: Thu, 19 Mar 2020 16:17:17 +0100
Subject: [PATCH 2/3] cpu/cc2538: fix GPT3 timer IRQ definition

---
 cpu/cc2538/periph/timer.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/cpu/cc2538/periph/timer.c b/cpu/cc2538/periph/timer.c
index 6dfc377764..9a911e00ad 100644
--- a/cpu/cc2538/periph/timer.c
+++ b/cpu/cc2538/periph/timer.c
@@ -67,8 +67,21 @@ static inline void _irq_enable(tim_t tim)
     DEBUG("%s(%u)\n", __FUNCTION__, tim);
 
     if (tim < TIMER_NUMOF) {
-        IRQn_Type irqn = GPTIMER_0A_IRQn + (2 * tim);
-
+        IRQn_Type irqn;
+        switch (tim) {
+            case 0:
+                irqn = GPTIMER_0A_IRQn;
+                break;
+            case 1:
+                irqn = GPTIMER_1A_IRQn;
+                break;
+            case 2:
+                irqn = GPTIMER_2A_IRQn;
+                break;
+            case 3:
+                irqn = GPTIMER_3A_IRQn;
+                break;
+        }
         NVIC_SetPriority(irqn, TIMER_IRQ_PRIO);
         NVIC_EnableIRQ(irqn);
 

From daab688998b4210396d81048ac00c9fd0f4ec92d Mon Sep 17 00:00:00 2001
From: Francisco Molina <femolina@uc.cl>
Date: Thu, 19 Mar 2020 16:17:49 +0100
Subject: [PATCH 3/3] tests/periph_timer: adapt to cc2538 boards

---
 tests/periph_timer/Makefile | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/periph_timer/Makefile b/tests/periph_timer/Makefile
index 7506dd2bbd..3d8e2bcce8 100644
--- a/tests/periph_timer/Makefile
+++ b/tests/periph_timer/Makefile
@@ -21,10 +21,20 @@ BOARDS_TIMER_32kHz := \
     frdm-k22f \
     #
 
+BOARDS_TIMER_16MHz := \
+  cc2538dk \
+  openmote-b \
+  openmote-cc2538 \
+  remote-reva \
+  remote-revb \
+  #
+
 ifneq (,$(filter $(BOARDS_TIMER_25kHz),$(BOARD)))
   TIMER_SPEED ?= 250000
 else ifneq (,$(filter $(BOARDS_TIMER_32kHz),$(BOARD)))
   TIMER_SPEED ?= 32768
+else ifneq (,$(filter $(BOARDS_TIMER_16MHz),$(BOARD)))
+  TIMER_SPEED ?= 16000000
 endif
 
 TIMER_SPEED ?= 1000000