From 37f3088d9cc6d14c9758071ce4ed5cdc79917c75 Mon Sep 17 00:00:00 2001
From: Neil Gershenfeld <gersh@cba.mit.edu>
Date: Mon, 26 Dec 2022 20:51:30 -0500
Subject: [PATCH] wip
---
GPIO/RP2040/ring.RP2040.ino | 19 +++++++++++++++++++
index.html | 7 +++++++
2 files changed, 26 insertions(+)
diff --git a/GPIO/RP2040/ring.RP2040.ino b/GPIO/RP2040/ring.RP2040.ino
index 63b6548..9e41534 100644
--- a/GPIO/RP2040/ring.RP2040.ino
+++ b/GPIO/RP2040/ring.RP2040.ino
@@ -12,6 +12,9 @@
// warranty is provided, and users accept all liability.
//
+#define digitalWriteFast(pin,val) gpio_put(pin, val ? 1 : 0)
+#define digitalReadFast(pin) (gpio_get(pin) ? 1 : 0)
+
void setup() {
//
// nothing to do in first core
@@ -36,12 +39,27 @@ void loop1() {
//
uint32_t pin1 = (1 << 1);
uint32_t pin2 = (1 << 2);
+ /**/
while (1) {
if (pin1 & sio_hw->gpio_in)
sio_hw->gpio_clr = pin2;
else
sio_hw->gpio_set = pin2;
}
+ /**/
+ //
+ // Arduino Fast version
+ // 8.77 MHz at 250 MHz clock
+ // 8.16 MHz at 133 MHz clock
+ //
+ /*
+ while (1) {
+ if (digitalReadFast(1))
+ digitalWriteFast(2,LOW);
+ else
+ digitalWriteFast(2,HIGH);
+ }
+ */
//
// Arduino version
// 1.11 MHz at 250 MHz clock
@@ -56,3 +74,4 @@ void loop1() {
}
*/
}
+
diff --git a/index.html b/index.html
index d73b24d..4b9a7b4 100644
--- a/index.html
+++ b/index.html
@@ -67,6 +67,13 @@ The GPIO test measures how quickly pins can communicate with a processor core; t
<td>December 2022</td>
</tr>
+<tr>
+<td>8.77</td>
+<td>RP2040</td>
+<td><a href=GPIO/RP2040/ring.RP2040.ino>Arduino, digitalRead/WriteFast, 250 MHz</a></td>
+<td>December 2022</td>
+</tr>
+
<tr>
<td>4.62</td>
<td>ATSAME54</td>
--
GitLab