diff options
| -rw-r--r-- | examples/test-fsmc.cpp | 61 |
1 files changed, 28 insertions, 33 deletions
diff --git a/examples/test-fsmc.cpp b/examples/test-fsmc.cpp index 9102be6..7cb1764 100644 --- a/examples/test-fsmc.cpp +++ b/examples/test-fsmc.cpp @@ -19,14 +19,13 @@ void setup() { pinMode(BOARD_LED_PIN, OUTPUT); digitalWrite(BOARD_LED_PIN, HIGH); - Serial1.begin(115200); - Serial1.println("*** Beginning RAM chip test"); + SerialUSB.println("*** Beginning RAM chip test"); test_single_write(); test_all_addresses(); - Serial1.println("Tests pass, finished."); - Serial1.println("***\n"); + SerialUSB.println("Tests pass, finished."); + SerialUSB.println("***\n"); } void loop() { @@ -36,17 +35,17 @@ void test_single_write() { uint16 *ptr = sram_start; uint16 tmp; - Serial1.print("Writing 0x1234... "); + SerialUSB.print("Writing 0x1234... "); *ptr = 0x1234; - Serial1.println("Done."); + SerialUSB.println("Done."); - Serial1.print("Reading... "); + SerialUSB.print("Reading... "); tmp = *ptr; - Serial1.print("Done: 0x"); - Serial1.println(tmp, HEX); + SerialUSB.print("Done: 0x"); + SerialUSB.println(tmp, HEX); if (tmp != 0x1234) { - Serial1.println("Mismatch; abort."); + SerialUSB.println("Mismatch; abort."); ASSERT(0); } } @@ -56,10 +55,7 @@ void test_all_addresses() { uint16 count = 0; uint16 *ptr; - Serial1.println("Now writing all memory addresses (unrolled loop)"); - // Turn off the USB interrupt, as it interferes most with timing - // (don't turn off SysTick, or we won't get micros()). - SerialUSB.end(); + SerialUSB.println("Now writing all memory addresses (unrolled loop)"); start = micros(); for (ptr = sram_start; ptr < sram_end;) { *ptr++ = count++; @@ -80,35 +76,34 @@ void test_all_addresses() { *ptr++ = count++; } end = micros(); - SerialUSB.begin(); - Serial1.print("Done. Elapsed time (us): "); - Serial1.println(end - start); + SerialUSB.print("Done. Elapsed time (us): "); + SerialUSB.println(end - start); - Serial1.println("Validating writes."); + SerialUSB.println("Validating writes."); for (ptr = sram_start, count = 0; ptr < sram_end; ptr++, count++) { uint16 value = *ptr; if (value != count) { - Serial1.print("mismatch: 0x"); - Serial1.print((uint32)ptr); - Serial1.print(" = 0x"); - Serial1.print(value, HEX); - Serial1.print(", should be 0x"); - Serial1.print(count, HEX); - Serial1.println("."); + 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); } } - Serial1.println("Done; all writes seem valid."); + SerialUSB.println("Done; all writes seem valid."); ptrdiff_t nwrites = sram_end - sram_start; double us_per_write = double(end-start) / double(nwrites); - Serial1.print("Number of writes = "); - Serial1.print(nwrites); - Serial1.print("; avg. time per write = "); - Serial1.print(us_per_write); - Serial1.print(" us ("); - Serial1.print(1 / us_per_write); - Serial1.println(" MHz)"); + 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() { |