260 lines
13 KiB
C++
260 lines
13 KiB
C++
/* USB Host Shield 2.0 board quality control routine */
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/* To see the output set your terminal speed to 115200 */
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/* for GPIO test to pass you need to connect GPIN0 to GPOUT7, GPIN1 to GPOUT6, etc. */
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/* otherwise press any key after getting GPIO error to complete the test */
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/**/
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#include <usbhub.h>
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// Satisfy the IDE, which needs to see the include statment in the ino too.
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#ifdef dobogusinclude
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#include <spi4teensy3.h>
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#include <../../../../hardware/pic32/libraries/SPI/SPI.h> // Hack to use the SPI library
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#include <SPI.h> // Hack to use the SPI library
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#endif
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/* variables */
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uint8_t rcode;
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uint8_t usbstate;
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uint8_t laststate;
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//uint8_t buf[sizeof(USB_DEVICE_DESCRIPTOR)];
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USB_DEVICE_DESCRIPTOR buf;
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/* objects */
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USB Usb;
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//USBHub hub(&Usb);
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void setup() {
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laststate = 0;
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Serial.begin(115200);
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#if !defined(__MIPSEL__)
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while(!Serial); // Wait for serial port to connect - used on Leonardo, Teensy and other boards with built-in USB CDC serial connection
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#endif
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E_Notify(PSTR("\r\nCircuits At Home 2011"), 0x80);
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E_Notify(PSTR("\r\nUSB Host Shield Quality Control Routine"), 0x80);
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/* SPI quick test - check revision register */
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E_Notify(PSTR("\r\nReading REVISION register... Die revision "), 0x80);
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Usb.Init(); // Initializes SPI, we don't care about the return value here
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{
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uint8_t tmpbyte = Usb.regRd(rREVISION);
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switch(tmpbyte) {
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case( 0x01): //rev.01
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E_Notify(PSTR("01"), 0x80);
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break;
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case( 0x12): //rev.02
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E_Notify(PSTR("02"), 0x80);
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break;
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case( 0x13): //rev.03
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E_Notify(PSTR("03"), 0x80);
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break;
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default:
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E_Notify(PSTR("invalid. Value returned: "), 0x80);
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print_hex(tmpbyte, 8);
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halt55();
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break;
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}//switch( tmpbyte...
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}//check revision register
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/* SPI long test */
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{
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E_Notify(PSTR("\r\nSPI long test. Transfers 1MB of data. Each dot is 64K"), 0x80);
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uint8_t sample_wr = 0;
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uint8_t sample_rd = 0;
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uint8_t gpinpol_copy = Usb.regRd(rGPINPOL);
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for(uint8_t i = 0; i < 16; i++) {
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for(uint16_t j = 0; j < 65535; j++) {
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Usb.regWr(rGPINPOL, sample_wr);
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sample_rd = Usb.regRd(rGPINPOL);
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if(sample_rd != sample_wr) {
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E_Notify(PSTR("\r\nTest failed. "), 0x80);
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E_Notify(PSTR("Value written: "), 0x80);
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print_hex(sample_wr, 8);
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E_Notify(PSTR(" read: "), 0x80);
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print_hex(sample_rd, 8);
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halt55();
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}//if( sample_rd != sample_wr..
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sample_wr++;
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}//for( uint16_t j...
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E_Notify(PSTR("."), 0x80);
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}//for( uint8_t i...
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Usb.regWr(rGPINPOL, gpinpol_copy);
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E_Notify(PSTR(" SPI long test passed"), 0x80);
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}//SPI long test
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/* GPIO test */
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/* in order to simplify board layout, GPIN pins on text fixture are connected to GPOUT */
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/* in reverse order, i.e, GPIN0 is connected to GPOUT7, GPIN1 to GPOUT6, etc. */
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{
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uint8_t tmpbyte;
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E_Notify(PSTR("\r\nGPIO test. Connect GPIN0 to GPOUT7, GPIN1 to GPOUT6, and so on"), 0x80);
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for(uint8_t sample_gpio = 0; sample_gpio < 255; sample_gpio++) {
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Usb.gpioWr(sample_gpio);
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tmpbyte = Usb.gpioRd();
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/* bit reversing code copied vetbatim from http://graphics.stanford.edu/~seander/bithacks.html#BitReverseObvious */
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tmpbyte = ((tmpbyte * 0x0802LU & 0x22110LU) | (tmpbyte * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16;
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if(sample_gpio != tmpbyte) {
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E_Notify(PSTR("\r\nTest failed. Value written: "), 0x80);
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print_hex(sample_gpio, 8);
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E_Notify(PSTR(" Value read: "), 0x80);
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print_hex(tmpbyte, 8);
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E_Notify(PSTR(" "), 0x80);
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press_any_key();
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break;
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}//if( sample_gpio != tmpbyte...
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}//for( uint8_t sample_gpio...
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E_Notify(PSTR("\r\nGPIO test passed."), 0x80);
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}//GPIO test
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/* PLL test. Stops/starts MAX3421E oscillator several times */
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{
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E_Notify(PSTR("\r\nPLL test. 100 chip resets will be performed"), 0x80);
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/* check current state of the oscillator */
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if(!(Usb.regRd(rUSBIRQ) & bmOSCOKIRQ)) { //wrong state - should be on
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E_Notify(PSTR("\r\nCurrent oscillator state unexpected."), 0x80);
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press_any_key();
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}
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/* Restart oscillator */
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E_Notify(PSTR("\r\nResetting oscillator\r\n"), 0x80);
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for(uint16_t i = 0; i < 100; i++) {
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E_Notify(PSTR("\rReset number "), 0x80);
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Serial.print(i, DEC);
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Usb.regWr(rUSBCTL, bmCHIPRES); //reset
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if(Usb.regRd(rUSBIRQ) & bmOSCOKIRQ) { //wrong state - should be off
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E_Notify(PSTR("\r\nCurrent oscillator state unexpected."), 0x80);
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halt55();
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}
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Usb.regWr(rUSBCTL, 0x00); //release from reset
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uint16_t j = 0;
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for(j = 1; j < 65535; j++) { //tracking off to on time
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if(Usb.regRd(rUSBIRQ) & bmOSCOKIRQ) {
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E_Notify(PSTR(" Time to stabilize - "), 0x80);
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Serial.print(j, DEC);
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E_Notify(PSTR(" cycles\r\n"), 0x80);
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break;
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}
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}//for( uint16_t j = 0; j < 65535; j++
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if(j == 0) {
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E_Notify(PSTR("PLL failed to stabilize"), 0x80);
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press_any_key();
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}
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}//for( uint8_t i = 0; i < 255; i++
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}//PLL test
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/* initializing USB stack */
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if(Usb.Init() == -1) {
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E_Notify(PSTR("\r\nOSCOKIRQ failed to assert"), 0x80);
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halt55();
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}
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E_Notify(PSTR("\r\nChecking USB device communication.\r\n"), 0x80);
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}
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void loop() {
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delay(200);
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Usb.Task();
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usbstate = Usb.getUsbTaskState();
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if(usbstate != laststate) {
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laststate = usbstate;
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/**/
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switch(usbstate) {
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case( USB_DETACHED_SUBSTATE_WAIT_FOR_DEVICE):
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E_Notify(PSTR("\r\nWaiting for device..."), 0x80);
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break;
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case( USB_ATTACHED_SUBSTATE_RESET_DEVICE):
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E_Notify(PSTR("\r\nDevice connected. Resetting..."), 0x80);
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break;
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case( USB_ATTACHED_SUBSTATE_WAIT_SOF):
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E_Notify(PSTR("\r\nReset complete. Waiting for the first SOF..."), 0x80);
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break;
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case( USB_ATTACHED_SUBSTATE_GET_DEVICE_DESCRIPTOR_SIZE):
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E_Notify(PSTR("\r\nSOF generation started. Enumerating device..."), 0x80);
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break;
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case( USB_STATE_ADDRESSING):
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E_Notify(PSTR("\r\nSetting device address..."), 0x80);
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break;
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case( USB_STATE_RUNNING):
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E_Notify(PSTR("\r\nGetting device descriptor"), 0x80);
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rcode = Usb.getDevDescr(1, 0, sizeof (USB_DEVICE_DESCRIPTOR), (uint8_t*) & buf);
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if(rcode) {
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E_Notify(PSTR("\r\nError reading device descriptor. Error code "), 0x80);
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print_hex(rcode, 8);
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} else {
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/**/
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E_Notify(PSTR("\r\nDescriptor Length:\t"), 0x80);
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print_hex(buf.bLength, 8);
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E_Notify(PSTR("\r\nDescriptor type:\t"), 0x80);
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print_hex(buf.bDescriptorType, 8);
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E_Notify(PSTR("\r\nUSB version:\t\t"), 0x80);
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print_hex(buf.bcdUSB, 16);
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E_Notify(PSTR("\r\nDevice class:\t\t"), 0x80);
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print_hex(buf.bDeviceClass, 8);
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E_Notify(PSTR("\r\nDevice Subclass:\t"), 0x80);
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print_hex(buf.bDeviceSubClass, 8);
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E_Notify(PSTR("\r\nDevice Protocol:\t"), 0x80);
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print_hex(buf.bDeviceProtocol, 8);
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E_Notify(PSTR("\r\nMax.packet size:\t"), 0x80);
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print_hex(buf.bMaxPacketSize0, 8);
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E_Notify(PSTR("\r\nVendor ID:\t\t"), 0x80);
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print_hex(buf.idVendor, 16);
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E_Notify(PSTR("\r\nProduct ID:\t\t"), 0x80);
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print_hex(buf.idProduct, 16);
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E_Notify(PSTR("\r\nRevision ID:\t\t"), 0x80);
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print_hex(buf.bcdDevice, 16);
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E_Notify(PSTR("\r\nMfg.string index:\t"), 0x80);
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print_hex(buf.iManufacturer, 8);
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E_Notify(PSTR("\r\nProd.string index:\t"), 0x80);
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print_hex(buf.iProduct, 8);
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E_Notify(PSTR("\r\nSerial number index:\t"), 0x80);
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print_hex(buf.iSerialNumber, 8);
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E_Notify(PSTR("\r\nNumber of conf.:\t"), 0x80);
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print_hex(buf.bNumConfigurations, 8);
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/**/
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E_Notify(PSTR("\r\n\nAll tests passed. Press RESET to restart test"), 0x80);
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while(1);
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}
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break;
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case( USB_STATE_ERROR):
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E_Notify(PSTR("\r\nUSB state machine reached error state"), 0x80);
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break;
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default:
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break;
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}//switch( usbstate...
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}
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}//loop()...
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/* constantly transmits 0x55 via SPI to aid probing */
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void halt55() {
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E_Notify(PSTR("\r\nUnrecoverable error - test halted!!"), 0x80);
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E_Notify(PSTR("\r\n0x55 pattern is transmitted via SPI"), 0x80);
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E_Notify(PSTR("\r\nPress RESET to restart test"), 0x80);
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while(1) {
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Usb.regWr(0x55, 0x55);
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}
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}
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/* prints hex numbers with leading zeroes */
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void print_hex(int v, int num_places) {
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int mask = 0, n, num_nibbles, digit;
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for(n = 1; n <= num_places; n++) {
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mask = (mask << 1) | 0x0001;
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}
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v = v & mask; // truncate v to specified number of places
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num_nibbles = num_places / 4;
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if((num_places % 4) != 0) {
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++num_nibbles;
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}
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do {
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digit = ((v >> (num_nibbles - 1) * 4)) & 0x0f;
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Serial.print(digit, HEX);
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} while(--num_nibbles);
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}
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/* prints "Press any key" and returns when key is pressed */
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void press_any_key() {
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E_Notify(PSTR("\r\nPress any key to continue..."), 0x80);
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while(Serial.available() <= 0); //wait for input
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Serial.read(); //empty input buffer
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return;
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}
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