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authorbryan newbold <bnewbold@robocracy.org>2014-10-16 20:20:20 -0700
committerbryan newbold <bnewbold@robocracy.org>2014-10-16 20:20:20 -0700
commitdba5a9fe68ebb996eeee69fa9b573fe5a1561ce2 (patch)
tree6d9c249686b81b2b70da9b9a3dd1e246c221b4b3 /examples/test-fsmc.cpp
parent160d861ba3fe50c30891d1abcb2c520be84aaa85 (diff)
downloadlibrambutan-dba5a9fe68ebb996eeee69fa9b573fe5a1561ce2.tar.gz
librambutan-dba5a9fe68ebb996eeee69fa9b573fe5a1561ce2.zip
refactor: move test-style examples to ./tests
Diffstat (limited to 'examples/test-fsmc.cpp')
-rw-r--r--examples/test-fsmc.cpp122
1 files changed, 0 insertions, 122 deletions
diff --git a/examples/test-fsmc.cpp b/examples/test-fsmc.cpp
deleted file mode 100644
index 1621317..0000000
--- a/examples/test-fsmc.cpp
+++ /dev/null
@@ -1,122 +0,0 @@
-#include <stddef.h> // for ptrdiff_t
-
-#include <wirish/wirish.h>
-#include <libmaple/fsmc.h>
-
-#ifndef BOARD_maple_native
-#error "Sorry, this example only works on Maple Native."
-#endif
-
-// Start of FSMC SRAM bank 1
-static uint16 *const sram_start = (uint16*)0x60000000;
-// End of Maple Native SRAM chip address space (512K 16-bit words)
-static uint16 *const sram_end = (uint16*)0x60100000;
-
-void test_single_write(void);
-void test_all_addresses(void);
-
-void setup() {
- pinMode(BOARD_LED_PIN, OUTPUT);
- digitalWrite(BOARD_LED_PIN, HIGH);
-
- SerialUSB.read();
- SerialUSB.println("*** Beginning RAM chip test");
-
- test_single_write();
- test_all_addresses();
-
- SerialUSB.println("Tests pass, finished.");
- SerialUSB.println("***\n");
-}
-
-void loop() {
-}
-
-void test_single_write() {
- uint16 *ptr = sram_start;
- uint16 tmp;
-
- SerialUSB.print("Writing 0x1234... ");
- *ptr = 0x1234;
- SerialUSB.println("Done.");
-
- SerialUSB.print("Reading... ");
- tmp = *ptr;
- SerialUSB.print("Done: 0x");
- SerialUSB.println(tmp, HEX);
-
- if (tmp != 0x1234) {
- SerialUSB.println("Mismatch; abort.");
- ASSERT(0);
- }
-}
-
-void test_all_addresses() {
- uint32 start, end;
- uint16 count = 0;
- uint16 *ptr;
-
- SerialUSB.println("Now writing all memory addresses (unrolled loop)");
- start = micros();
- for (ptr = sram_start; ptr < sram_end;) {
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- *ptr++ = count++;
- }
- end = micros();
- SerialUSB.print("Done. Elapsed time (us): ");
- SerialUSB.println(end - start);
-
- SerialUSB.println("Validating writes.");
- for (ptr = sram_start, count = 0; ptr < sram_end; ptr++, count++) {
- uint16 value = *ptr;
- if (value != count) {
- SerialUSB.print("mismatch: 0x");
- SerialUSB.print((uint32)ptr);
- SerialUSB.print(" = 0x");
- SerialUSB.print(value, HEX);
- SerialUSB.print(", should be 0x");
- SerialUSB.print(count, HEX);
- SerialUSB.println(".");
- ASSERT(0);
- }
- }
- SerialUSB.println("Done; all writes seem valid.");
-
- ptrdiff_t nwrites = sram_end - sram_start;
- double us_per_write = double(end-start) / double(nwrites);
- SerialUSB.print("Number of writes = ");
- SerialUSB.print(nwrites);
- SerialUSB.print("; avg. time per write = ");
- SerialUSB.print(us_per_write);
- SerialUSB.print(" us (");
- SerialUSB.print(1 / us_per_write);
- SerialUSB.println(" MHz)");
-}
-
-__attribute__((constructor)) void premain() {
- init();
-}
-
-int main(void) {
- setup();
-
- while (true) {
- loop();
- }
-
- return 0;
-}