diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/test-fsmc.cpp | 80 |
1 files changed, 28 insertions, 52 deletions
diff --git a/examples/test-fsmc.cpp b/examples/test-fsmc.cpp index a4e43d6..6449cfd 100644 --- a/examples/test-fsmc.cpp +++ b/examples/test-fsmc.cpp @@ -1,48 +1,17 @@ -/* *****************************************************************************
- * The MIT License
- *
- * Copyright (c) 2010 LeafLabs LLC.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- * ****************************************************************************/
-
-/**
- * @brief Sample main.cpp file. Sends "Hello world!" out SPI1.
- *
- * SPI1 is set up to be a master transmitter at 4.5MHz, little endianness,
- * and SPI mode 0.
- *
- * Pin 10 is used as Chip Select
- *
- */
#include "wirish.h"
#include "fsmc.h"
#include "rcc.h"
#include "gpio.h"
-#define LED_PIN 23
-#define DISC_PIN 14
+#define LED_PIN 23 // hack for maple native
+#define DISC_PIN 14 // hack for USB on native
// System control block registers
#define SCB_BASE (SCB_Reg*)(0xE000ED00)
+// This stuff should ultimately get moved to util.h or scb.h or w/e.
+// Also in interactive test program and the HardFault IRQ handler.
typedef struct {
volatile uint32 CPUID;
volatile uint32 ICSR;
@@ -65,6 +34,7 @@ SCB_Reg *scb; uint16 *ptr;
int toggle = 0;
+int count = 0;
void setup() {
uint32 id;
@@ -84,26 +54,20 @@ void setup() { fsmc_native_sram_init();
Serial1.println("Done.");
-
+ // Start of channel1 SRAM bank (through to 0x63FFFFFF, though only a chunk
+ // of this is valid)
ptr = (uint16*)(0x60000000);
- //ptr = (uint16*)(0x68000000);
- //ptr = (uint16*)(0x80000000);
- Serial1.print("Writing... ");
- *ptr = 0xFFFF;
+ Serial1.print("Writing... ");
+ *ptr = 0x1234;
Serial1.println("Done.");
Serial1.print("Reading... ");
id = *ptr;
- Serial1.print("Done: ");
- Serial1.println(id,BIN);
-
- /*
- Serial1.print("CPUID is at: ");
- id = (uint32)(&(scb->CPUID));
+ Serial1.print("Done: "); // shouldn't be 0xFFFFFFFF
Serial1.println(id,BIN);
- */
+ Serial1.println("Dumping System Control Block Registers");
Serial1.print("CPUID: ");
id = scb->CPUID;
Serial1.println(id,BIN);
@@ -122,20 +86,32 @@ void setup() { Serial1.print("BFAR: ");
id = scb->BFAR;
Serial1.println(id,BIN);
-
+
+ Serial1.println("Now testing all memory addresses... (will hardfault at the end)");
+ delay(3000);
}
void loop() {
digitalWrite(LED_PIN, toggle);
toggle ^= 1;
- delay(100);
+ delay(1);
- *ptr = 0xFFFF;
- /*
+ ptr = (uint16*)(0x60000000);
+ count = 0;
+ for(int i = 0; i<1024; i++) {
+ count++;
+ ptr++;
+ *ptr = (0x0000FFFF & count);
+ //delay(10); // tweak this to test SRAM resiliance over time
+ if(*ptr != (0x0000FFFF & count)) {
+ Serial1.println("ERROR: mismatch, halting");
+ while(1) { }
+ }
+ }
+
Serial1.print((uint32)(ptr),HEX);
Serial1.print(": ");
Serial1.println(*ptr,BIN);
- */
}
int main(void) {
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