From edb0ec8a8ca05988054982906c2ffde053e08ce5 Mon Sep 17 00:00:00 2001
From: meepingsnesroms <guicrith@gmail.com>
Date: Fri, 13 Jul 2018 08:42:34 -0700
Subject: [PATCH] Can now read single ended reference properly

The differencial reference values are also more reasonable now.
---
 hwTestSuite/tools.c          | 20 ++++++++++++--------
 qtBuildSystem/Mu/Mu.pro.user |  2 +-
 unimplementedHardware.txt    |  3 ++-
 3 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/hwTestSuite/tools.c b/hwTestSuite/tools.c
index 8d47cd0..6b9508f 100644
--- a/hwTestSuite/tools.c
+++ b/hwTestSuite/tools.c
@@ -76,10 +76,10 @@ uint16_t ads7846GetValue(uint8_t channel, Boolean referenceMode, Boolean mode8bi
    /*enable SPI 2 if disabled*/
    writeArbitraryMemory16(HW_REG_ADDR(SPICONT2), 0x4207);
    
-#if 0
-   /*send data, only send the first 6 bits to leave the ADC enabled*/
-   writeArbitraryMemory16(HW_REG_ADDR(SPIDATA2), config >> 2);
-   writeArbitraryMemory16(HW_REG_ADDR(SPICONT2), 0x4305);
+#if 1
+   /*send data, only send the first 5 bits to leave the ADC enabled*/
+   writeArbitraryMemory16(HW_REG_ADDR(SPIDATA2), config >> 3);
+   writeArbitraryMemory16(HW_REG_ADDR(SPICONT2), 0x4304);
    while(readArbitraryMemory16(HW_REG_ADDR(SPICONT2)) & 0x0100);
    
    /*wait for the conversion to settle*/
@@ -87,11 +87,14 @@ uint16_t ads7846GetValue(uint8_t channel, Boolean referenceMode, Boolean mode8bi
    while(wasteTime < 100)
       wasteTime++;
    
-   /*send last 2 bits and 1 wait bit*/
-   writeArbitraryMemory16(HW_REG_ADDR(SPIDATA2), config << 1);
-   writeArbitraryMemory16(HW_REG_ADDR(SPICONT2), 0x4302);
+   /*send last 3 bits, wait 1 bit, get 8/12 bit result then pad the transfer to 16 bits*/
+   writeArbitraryMemory16(HW_REG_ADDR(SPIDATA2), config << 14);
+   writeArbitraryMemory16(HW_REG_ADDR(SPICONT2), 0x430F);
    while(readArbitraryMemory16(HW_REG_ADDR(SPICONT2)) & 0x0100);
-#endif
+   
+   /*get value returned*/
+   value = readArbitraryMemory16(HW_REG_ADDR(SPIDATA2)) & 0x0FFF;
+#else
    /*send data*/
    writeArbitraryMemory16(HW_REG_ADDR(SPIDATA2), config << 1);
    writeArbitraryMemory16(HW_REG_ADDR(SPICONT2), 0x4308);
@@ -104,6 +107,7 @@ uint16_t ads7846GetValue(uint8_t channel, Boolean referenceMode, Boolean mode8bi
    
    /*get value returned*/
    value = readArbitraryMemory16(HW_REG_ADDR(SPIDATA2)) >> (mode8bit ? 8 : 4);
+#endif
    
    /*disable SPI2*/
    writeArbitraryMemory16(HW_REG_ADDR(SPICONT2), 0xE000);
diff --git a/qtBuildSystem/Mu/Mu.pro.user b/qtBuildSystem/Mu/Mu.pro.user
index 8129f28..faae2b5 100644
--- a/qtBuildSystem/Mu/Mu.pro.user
+++ b/qtBuildSystem/Mu/Mu.pro.user
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE QtCreatorProject>
-<!-- Written by QtCreator 4.6.2, 2018-07-05T10:13:54. -->
+<!-- Written by QtCreator 4.6.2, 2018-07-06T09:47:00. -->
 <qtcreator>
  <data>
   <variable>EnvironmentId</variable>
diff --git a/unimplementedHardware.txt b/unimplementedHardware.txt
index f8ca668..8c90998 100644
--- a/unimplementedHardware.txt
+++ b/unimplementedHardware.txt
@@ -32,7 +32,8 @@ port d IRQ* bits edge triggered interrupt mode is not emulated
 edgeTriggeredInterruptLastValue may need to be locked when PLL is off
 port d data register seems to have its data bits cleared when an edge triggered interrupt is cleared(according to MC68VZ328UM.pdf Page 10-15)
 Dont know if it possible to have the backlight on and the display off at the same time(theres no reason for it but it may be possible)
-power button must be pushed twice to turn the CPU back on
+power button must be pushed twice to turn the CPU back on(when debugging it works the first time, then must be pushed twice to turn off instead of on)
+STOP opcode may be causing issues with the power button(it may be setting a separate CPU disable option)
 
 Debug tools:
 missing icons