[Cryptech-Commits] [user/ft/stm32-dev-bridge] 04/05: Delay FMC startup to not upset the Novena at boot.

[git at cryptech.is]

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fredrik at thulin.net pushed a commit to branch master
in repository user/ft/stm32-dev-bridge.

commit 53e92f830110356f853b365041acc972a83faeef
Author: Fredrik Thulin <fredrik at thulin.net>
Date:   Wed Sep 2 16:52:00 2015 +0200

    Delay FMC startup to not upset the Novena at boot.
    
    For some unknown reason, Novenas seems to not boot unless the
    initialization of the FMC interface is delayed for a little while.
---
 src/fmc-test/src/main.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/fmc-test/src/main.c b/src/fmc-test/src/main.c
index 872c182..69c5bb0 100644
--- a/src/fmc-test/src/main.c
+++ b/src/fmc-test/src/main.c
@@ -58,6 +58,7 @@ int test_fpga_address_bus(void);
 int main(void)
 //------------------------------------------------------------------------------
 {
+  int i;
 		// initialize hal
   HAL_Init();
 
@@ -67,6 +68,13 @@ int main(void)
 		// initialize gpio
 	MX_GPIO_Init();
 
+		// Blink blue LED for six seconds to not upset the Novena at boot.
+	led_on(GPIO_PIN_LED_BLUE);
+	for (i = 0; i < 12; i++) {
+		HAL_Delay(500);
+		led_toggle(GPIO_PIN_LED_BLUE);
+	}
+
 		// initialize rng
 	MX_RNG_Init();