diff options
Diffstat (limited to 'software/cmx589a_teensy_test/tx_benchmark.c')
| -rw-r--r-- | software/cmx589a_teensy_test/tx_benchmark.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/software/cmx589a_teensy_test/tx_benchmark.c b/software/cmx589a_teensy_test/tx_benchmark.c deleted file mode 100644 index 334947e..0000000 --- a/software/cmx589a_teensy_test/tx_benchmark.c +++ /dev/null @@ -1,169 +0,0 @@ -/* USB Serial Transmit Bandwidth Test for Teensy USB Development Board - * http://www.pjrc.com/teensy/ - * Copyright (c) 2009 PJRC.COM, 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. - */ - -#include <avr/io.h> -#include <avr/pgmspace.h> -#include <stdint.h> -#include <util/delay.h> -#include "usb_serial.h" - -#define LED_CONFIG (DDRD |= (1<<6)) -#define LED_ON (PORTD &= ~(1<<6)) -#define LED_OFF (PORTD |= (1<<6)) -#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n)) - -void send_str(const char *s); - -#define CLEAR_TIMER0_OVERFLOW() (TIFR0 |= (1<<TOV0)) -#define IS_TIMER0_OVERFLOW() (TIFR0 & (1<<TOV0)) - - -// USB Serial Transmit Bandwidth Test -// -// Within 5 seconds of opening the port, this program -// will send a message as rapidly as possible, for 10 seconds. -// When finished, turn off text capture (some programs will not -// write the last data until you do this), delete any extra lines -// at the beginning, and then the file size divided by 10 is the -// maximum transmit bandwidth. -// -// To use this, run a terminal emulator and select the option -// to capture all text to a file. On Linux & MacOS, you can use -// the cat command to read data to a file, such as: -// cat /dev/cu.usbmodem12341 > /tmp/test.txt -// The serial_read.exe or serial_list program can read the data -// without saving it. -// Results can vary depending on the number of other USB devices -// connected. For fastest results, disconnect all others. - -// Results on Ubuntu 9.04, using: ./serial_listen /dev/ttyACM0 -// Teensy++: 11565234 in 10 seconds -// Teensy: 9610184 in 10 seconds - -// Results on Mac OS X 10.5.7, using: ./serial_listen /dev/cu.usbmodem12341 -// Teensy++: 9013787 in 10 seconds -// Teensy: 6386395 in 10 seconds - -// Results on Windows XP SP3, using: serial_read.exe COM3: -// Teensy++: 10220367 in 10 seconds -// Teensy: 8196387 in 10 seconds - -// Results on Windows Vista SP1, using: serial_read.exe COM3: -// Teensy++: 10234275 in 10 seconds -// Teensy: 8196204 in 10 seconds - -// Results on Windows 7 (beta 7100), using: serial_read.exe COM3: -// Teensy++: 10274718 in 10 seconds -// Teensy: 8225423 in 10 seconds - -// All 5 of these were tested on a Macbook with Intel dual core 2.4 Ghz, -// external USB mouse + built-in USB peripherals - - -int main(void) -{ - uint8_t n; - uint16_t count; - const char test_string[] = { - "USB Fast Serial Transmit Bandwidth Test, capture this text.\r\n"}; - - // set for 16 MHz clock, and turn on the LED - CPU_PRESCALE(0); - LED_CONFIG; - LED_OFF; - DDRC |= (1<<2); // Pin C2 to show % cpu usage - - // configure timer0 to overflow every 4 ms, prescale=256, top=250 - // 250 * 256 / 16 MHz = 4 ms - TIMSK0 = 0; - TCCR0A = (1<<WGM01)|(1<<WGM00); - OCR0A = 250; - TCCR0B = (1<<WGM02)|(1<<CS02); - - // initialize the USB, and then wait for the host - // to set configuration. If the Teensy is powered - // without a PC connected to the USB port, this - // will wait forever. - usb_init(); - while (!usb_configured()) /* wait */ ; - _delay_ms(1000); - - while (1) { - // wait for the user to run their terminal emulator program - // which sets DTR to indicate it is ready to receive. - while (!(usb_serial_get_control() & USB_SERIAL_DTR)) /* wait */ ; - - // Turn the LED on while sending data - LED_ON; - - // give the user 5 seconds to enable text capture in their - // terminal emulator, or do whatever to get ready - for (n=5; n; n--) { - send_str(PSTR("10 second speed test begins in ")); - usb_serial_putchar(n + '0'); - send_str(PSTR(" sec.\r\n")); - if (!(usb_serial_get_control() & USB_SERIAL_DTR)) break; - _delay_ms(1000); - } - - // wait for a 4 ms timer0 period to begin - CLEAR_TIMER0_OVERFLOW(); - while (!IS_TIMER0_OVERFLOW()) /* wait */ ; - CLEAR_TIMER0_OVERFLOW(); - count=0; - - // send a string as fast as possible, for 10 seconds - while (1) { - usb_serial_write(test_string, (uint16_t)(sizeof(test_string)-1)); - if (IS_TIMER0_OVERFLOW()) { - CLEAR_TIMER0_OVERFLOW(); - count++; - if (count == 2500) break; // 10 sec - if (!(usb_serial_get_control() & USB_SERIAL_DTR)) break; - } - } - PORTC &= ~(1<<2); - send_str(PSTR("done!\r\n")); - LED_OFF; - - // after the test, wait forever doing nothing, - // well, at least until the terminal emulator quits - // or drops DTR for some reason. - while (usb_serial_get_control() & USB_SERIAL_DTR) /* wait */ ; - } -} - -// Send a string to the USB serial port. The string must be in -// flash memory, using PSTR -// -void send_str(const char *s) -{ - char c; - while (1) { - c = pgm_read_byte(s++); - if (!c) break; - usb_serial_putchar(c); - } -} - - |