From 49d7ca339f21cf64a61cb6f6059c180642135f15 Mon Sep 17 00:00:00 2001
From: Micah Elizabeth Scott <micah@scanlime.org>
Date: Thu, 10 Oct 2013 20:07:54 -0700
Subject: [PATCH] Remove unnecessary SWD delay
---
testjig/production/arm_debug.cpp | 13 -------------
testjig/production/arm_debug.h | 2 --
2 files changed, 15 deletions(-)
diff --git a/testjig/production/arm_debug.cpp b/testjig/production/arm_debug.cpp
index e6fdcad..b91becf 100644
--- a/testjig/production/arm_debug.cpp
+++ b/testjig/production/arm_debug.cpp
@@ -65,20 +65,13 @@ bool ARMDebug::identify()
return true;
}
-void ARMDebug::bit_delay()
-{
- delayMicroseconds(1);
-}
-
void ARMDebug::mosi_transfer(uint32_t data, unsigned nBits)
{
while (nBits--) {
digitalWrite(this->clockPin, LOW);
digitalWrite(this->dataPin, data & 1);
data >>= 1;
- bit_delay();
digitalWrite(this->clockPin, HIGH);
- bit_delay();
}
}
@@ -88,13 +81,11 @@ uint32_t ARMDebug::miso_transfer(unsigned nBits)
uint32_t mask = 1;
while (nBits--) {
digitalWrite(this->clockPin, LOW);
- bit_delay();
if (digitalRead(this->dataPin)) {
result |= mask;
}
mask <<= 1;
digitalWrite(this->clockPin, HIGH);
- bit_delay();
}
return result;
}
@@ -104,9 +95,7 @@ void ARMDebug::mosi_trn(unsigned nClocks)
pinMode(this->dataPin, INPUT_PULLUP);
while (nClocks--) {
digitalWrite(this->clockPin, LOW);
- bit_delay();
digitalWrite(this->clockPin, HIGH);
- bit_delay();
}
pinMode(this->dataPin, OUTPUT);
}
@@ -117,9 +106,7 @@ void ARMDebug::miso_trn(unsigned nClocks)
pinMode(this->dataPin, INPUT_PULLUP);
while (nClocks--) {
digitalWrite(this->clockPin, LOW);
- bit_delay();
digitalWrite(this->clockPin, HIGH);
- bit_delay();
}
}
diff --git a/testjig/production/arm_debug.h b/testjig/production/arm_debug.h
index de37171..60eac04 100644
--- a/testjig/production/arm_debug.h
+++ b/testjig/production/arm_debug.h
@@ -48,6 +48,4 @@ public:
private:
uint8_t clockPin, dataPin;
void *context; // libswd context (opaque type)
-
- void bit_delay();
};
--
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