Use a delay loop, so sdram can be initialized from the startup code, before the clock is running.

1 files changed, 3 insertions, 1 deletions

diff --git a/stm-sdram.c b/stm-sdram.c
index 0ec8065..52bab98 100644
--- a/stm-sdram.c
+++ b/stm-sdram.c
@@ -51,7 +51,7 @@ HAL_StatusTypeDef sdram_init(void)
     static int initialized = 0;

 

     if (initialized) {

-	return;

+	return HAL_OK;

     }

     initialized = 1;

 

@@ -184,6 +184,8 @@ HAL_StatusTypeDef _sdram_init_params(SDRAM_HandleTypeDef *sdram1, SDRAM_HandleTy
     HAL_StatusTypeDef ok;			// status

     FMC_SDRAM_CommandTypeDef cmd;		// command

 

+#define HAL_Delay(n) for (int i = 0; i < 1000 * n; ++i)

+

     /*

      * enable clocking

      */