From 3bd85919b1ec90637ef71ab441a117609bf0feff Mon Sep 17 00:00:00 2001
From: Neil Gershenfeld <gersh@cba.mit.edu>
Date: Thu, 29 Dec 2022 09:31:42 -0500
Subject: [PATCH] wip
---
GPIO/RP2040/ring.RP2040.ino | 17 ++++++++---------
index.html | 9 +--------
2 files changed, 9 insertions(+), 17 deletions(-)
diff --git a/GPIO/RP2040/ring.RP2040.ino b/GPIO/RP2040/ring.RP2040.ino
index 9e41534..8057120 100644
--- a/GPIO/RP2040/ring.RP2040.ino
+++ b/GPIO/RP2040/ring.RP2040.ino
@@ -12,8 +12,8 @@
// 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)
+#define digitalWriteFast(pin,val) (val ? sio_hw->gpio_set = (1 << pin) : sio_hw->gpio_clr = (1 << pin))
+#define digitalReadFast(pin) ((1 << pin) & sio_hw->gpio_in)
void setup() {
//
@@ -39,27 +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
+ // 12.9 MHz at 250 MHz clock
+ // 9.17 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
@@ -74,4 +74,3 @@ void loop1() {
}
*/
}
-
diff --git a/index.html b/index.html
index 2605d2a..6f72a33 100644
--- a/index.html
+++ b/index.html
@@ -70,14 +70,7 @@ The GPIO test measures how quickly pins can communicate with a processor core; t
<tr>
<td>12.9</td>
<td>RP2040</td>
-<td><a href=GPIO/RP2040/ring.RP2040.ino>Arduino, SIO, 250 MHz</a></td>
-<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><a href=GPIO/RP2040/ring.RP2040.ino>Arduino, SIO/Fast, 250 MHz</a></td>
<td>December 2022</td>
</tr>
--
GitLab