From 9ffead1c015bf05425b78d43b1b4b3e21f109929 Mon Sep 17 00:00:00 2001
From: Paul Selkirk <paul@psgd.org>
Date: Mon, 31 Jul 2017 23:23:05 -0400
Subject: Add a generic SysTick hook, to call a function on every 1ms tick,
because it's easier than setting up a dedicated timer.
---
.../TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/stm32f4xx_it.c | 8 ++++++++
1 file changed, 8 insertions(+)
(limited to 'libraries/mbed/targets')
diff --git a/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/stm32f4xx_it.c b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/stm32f4xx_it.c
index 8e5cc73..4629e44 100644
--- a/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/stm32f4xx_it.c
+++ b/libraries/mbed/targets/cmsis/TARGET_STM/TARGET_STM32F4/TARGET_CRYPTECH_ALPHA/stm32f4xx_it.c
@@ -64,6 +64,13 @@ void HardFault_Handler(void)
while (1) { ; }
}
+static void default_SysTick_hook(void) { };
+static void (*SysTick_hook)(void) = default_SysTick_hook;
+void set_SysTick_hook(void (*hook)(void))
+{
+ SysTick_hook = (hook == NULL) ? default_SysTick_hook : hook;
+}
+
/**
* @brief This function handles SysTick Handler.
* @param None
@@ -72,6 +79,7 @@ void HardFault_Handler(void)
void SysTick_Handler(void)
{
HAL_IncTick();
+ SysTick_hook();
}
/******************************************************************************/
--
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