From 7713be1d2555c1a0b1cb8b2dbc47682cadc840fb Mon Sep 17 00:00:00 2001
From: Jenna Fox <a@creativepony.com>
Date: Mon, 24 Sep 2012 09:56:28 +1000
Subject: Trying to bring in lous' eraseApplication mechanism.

---
 firmware/upload.rb | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

(limited to 'firmware/upload.rb')

diff --git a/firmware/upload.rb b/firmware/upload.rb
index e3b77b2..f49a94f 100644
--- a/firmware/upload.rb
+++ b/firmware/upload.rb
@@ -5,6 +5,7 @@ class MicroBoot
   Functions = [
     :get_info,
     :write_page,
+    :erase_application,
     :run_program
   ]
   
@@ -30,7 +31,7 @@ class MicroBoot
       @info = {
         flash_length: flash_length,
         page_size: page_size,
-        write_sleep: write_sleep.to_f / 1000.0,
+        write_sleep: 0.020, #write_sleep.to_f / 1000.0,
         version: "#{@device.bcdDevice >> 8}.#{@device.bcdDevice & 0xFF}",
         version_numeric: @device.bcdDevice
       }
@@ -38,11 +39,20 @@ class MicroBoot
     @info
   end
   
+  def erase!
+    info = self.info
+    control_transfer(function: :erase_application)
+    sleep(info[:write_sleep] * ((info[:flash_length] / info[:page_size]) + 1)) # sleep for as many pages as the chip has
+  end
+  
   # upload a new program
   def program= bytestring
+    info = self.info
     raise "Program too long!" if bytestring.bytesize > info[:flash_length]
     bytes = bytestring.bytes.to_a
     
+    erase!
+    
     address = 0
     bytes.each_slice(info[:page_size]) do |bytes|
       control_transfer(function: :write_page, wIndex: address, wValue: bytes.length, dataOut: bytes.pack('C*'))
-- 
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