X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcpu%2Fcortex-m3%2Fdrv%2Fnand_sam3.c;h=85350cb761a58a5aa65804b39221b5f27e445a78;hb=78c0c32b36b62e3d8102d2803068186f52ff1d32;hp=cac51afdb3340e6a79690c251a8c7576372fedee;hpb=bcc879816c385dea470a0363a802934c498e71e4;p=bertos.git

diff --git a/bertos/cpu/cortex-m3/drv/nand_sam3.c b/bertos/cpu/cortex-m3/drv/nand_sam3.c
index cac51afd..85350cb7 100644
--- a/bertos/cpu/cortex-m3/drv/nand_sam3.c
+++ b/bertos/cpu/cortex-m3/drv/nand_sam3.c
@@ -30,21 +30,16 @@
  *
  * -->
  *
- * \brief NAND driver for SAM3's static memory controller.
+ * \brief NAND driver hardware implementation for SAM3's static memory controller.
  *
  * \author Stefano Fedrigo <aleph@develer.com>
  */
 
-#include "nand_sam3.h"
 #include <drv/nand.h>
 #include <cfg/log.h>
-#include <cfg/macros.h>
 #include <io/sam3.h>
 #include <drv/timer.h>
-#include <cpu/power.h> /* cpu_relax() */
-#include <cpu/types.h>
-
-#include <string.h> /* memcpy, memset */
+#include <cpu/power.h> // cpu_relax()
 
 
 /*
@@ -89,6 +84,7 @@ bool nand_waitReadyBusy(UNUSED_ARG(Nand *, chip), time_t timeout)
 	return true;
 }
 
+
 /*
  * Wait for transfer to complete until timeout.
  * If transfer completes return true, false in case of timeout.
@@ -163,19 +159,25 @@ uint8_t nand_getChipStatus(UNUSED_ARG(Nand *, chip))
 }
 
 
+/*
+ * Return pointer to buffer where data are read to or written from
+ * by nand_sendCommand().
+ */
 void *nand_dataBuffer(UNUSED_ARG(Nand *, chip))
 {
 	return (void *)NFC_SRAM_BASE_ADDR;
 }
 
 
-bool nand_checkEcc(Nand *chip)
+/*
+ * Extract ECC data from ECC_PRx registers.
+ */
+bool nand_checkEcc(UNUSED_ARG(Nand *, chip))
 {
 	uint32_t sr1 = SMC_ECC_SR1;
 	if (sr1)
 	{
 		LOG_INFO("ECC error, ECC_SR1=0x%lx\n", sr1);
-		chip->status |= NAND_ERR_ECC;
 		return false;
 	}
 	else
@@ -201,6 +203,9 @@ void nand_computeEcc(UNUSED_ARG(Nand *, chip),
 }
 
 
+/*
+ * Low-level hardware driver initialization.
+ */
 void nand_hwInit(UNUSED_ARG(Nand *, chip))
 {
 	// FIXME: Parameters specific for MT29F8G08AAD