From f3bfd267193e8c05a545b47a89bdbf8126eb706c Mon Sep 17 00:00:00 2001
From: Ross Owen <ross@xmos.com>
Date: Thu, 22 Nov 2012 18:21:29 +0000
Subject: [PATCH] Added flash_interface.c

---
 .../flashlib_user/flash_interface.c           | 85 +++++++++++++++++++
 1 file changed, 85 insertions(+)
 create mode 100644 module_usb_audio/flashlib_user/flash_interface.c

diff --git a/module_usb_audio/flashlib_user/flash_interface.c b/module_usb_audio/flashlib_user/flash_interface.c
new file mode 100644
index 00000000..b5d3a8d3
--- /dev/null
+++ b/module_usb_audio/flashlib_user/flash_interface.c
@@ -0,0 +1,85 @@
+#include "devicedefines.h"
+
+#ifdef DFU
+
+#include <xs1.h>
+#include <xclib.h>
+#include <flashlib.h>
+#include <print.h>
+
+#define settw(a,b) {__asm__ __volatile__("settw res[%0], %1": : "r" (a) , "r" (b));}
+#define setc(a,b) {__asm__  __volatile__("setc res[%0], %1": : "r" (a) , "r" (b));}
+#define setclk(a,b) {__asm__ __volatile__("setclk res[%0], %1": : "r" (a) , "r" (b));}
+#define portin(a,b) {__asm__  __volatile__("in %0, res[%1]": "=r" (b) : "r" (a));}
+#define portout(a,b) {__asm__  __volatile__("out res[%0], %1": : "r" (a) , "r" (b));}
+
+#ifdef DFU_FLASH_DEVICE
+#warning Using custom flash spec
+fl_DeviceSpec flash_devices[] = {DFU_FLASH_DEVICE};
+#endif
+
+fl_PortHolderStruct p_flash = 
+{
+    XS1_PORT_1A,
+    XS1_PORT_1B,
+    XS1_PORT_1C,
+    XS1_PORT_1D,
+    XS1_CLKBLK_1
+};
+
+int flash_cmd_enable_ports() 
+{
+    int result = 0;
+    setc(p_flash.spiMISO, XS1_SETC_INUSE_OFF);
+    setc(p_flash.spiCLK, XS1_SETC_INUSE_OFF);
+    setc(p_flash.spiMOSI, XS1_SETC_INUSE_OFF);
+    setc(p_flash.spiSS, XS1_SETC_INUSE_OFF);
+    setc(p_flash.spiClkblk, XS1_SETC_INUSE_OFF);
+
+
+    setc(p_flash.spiMISO, XS1_SETC_INUSE_ON);
+    setc(p_flash.spiCLK, XS1_SETC_INUSE_ON);
+    setc(p_flash.spiMOSI, XS1_SETC_INUSE_ON);
+    setc(p_flash.spiSS, XS1_SETC_INUSE_ON);
+    setc(p_flash.spiClkblk, XS1_SETC_INUSE_ON);
+    setc(p_flash.spiClkblk, XS1_SETC_INUSE_ON);
+
+    setclk(p_flash.spiMISO, XS1_CLKBLK_REF);
+    setclk(p_flash.spiCLK, XS1_CLKBLK_REF);
+    setclk(p_flash.spiMOSI, XS1_CLKBLK_REF);
+    setclk(p_flash.spiSS, XS1_CLKBLK_REF);
+
+    setc(p_flash.spiMISO, XS1_SETC_BUF_BUFFERS);
+    setc(p_flash.spiMOSI, XS1_SETC_BUF_BUFFERS);
+
+    settw(p_flash.spiMISO, 8);
+    settw(p_flash.spiMOSI, 8);
+
+#ifdef DFU_FLASH_DEVICE
+    result = fl_connectToDevice(&p_flash, flash_devices, 1);
+#else
+    /* Use default flash list */
+    result = fl_connect(&p_flash);
+#endif
+    if (!result) 
+    {
+        return 1;
+    } 
+    else 
+    {
+        return 0;
+    }
+}
+
+int flash_cmd_disable_ports() 
+{
+    fl_disconnect();
+
+    setc(p_flash.spiMISO, XS1_SETC_INUSE_OFF);
+    setc(p_flash.spiCLK, XS1_SETC_INUSE_OFF);
+    setc(p_flash.spiMOSI, XS1_SETC_INUSE_OFF);
+    setc(p_flash.spiSS, XS1_SETC_INUSE_OFF);
+
+    return 1;
+}
+#endif