sw: add initial tests for spi and rgb

These tests are still a work-in-progress, but they form the basis of
what will be the factory test.

Signed-off-by: Sean Cross <sean@xobs.io>

sw/include/hw/common.h

@@ -0,0 +1,52 @@
+#ifndef __HW_COMMON_H
+#define __HW_COMMON_H
+
+#include <stdint.h>
+
+/* To overwrite CSR accessors, define extern, non-inlined versions
+ * of csr_read[bwl]() and csr_write[bwl](), and define
+ * CSR_ACCESSORS_DEFINED.
+ */
+
+#ifndef CSR_ACCESSORS_DEFINED
+#define CSR_ACCESSORS_DEFINED
+
+#ifdef __ASSEMBLER__
+#define MMPTR(x) x
+#else /* ! __ASSEMBLER__ */
+#define MMPTR(x) (*((volatile unsigned int *)(x)))
+
+static inline void csr_writeb(uint8_t value, uint32_t addr)
+{
+	*((volatile uint8_t *)addr) = value;
+}
+
+static inline uint8_t csr_readb(uint32_t addr)
+{
+	return *(volatile uint8_t *)addr;
+}
+
+static inline void csr_writew(uint16_t value, uint32_t addr)
+{
+	*((volatile uint16_t *)addr) = value;
+}
+
+static inline uint16_t csr_readw(uint32_t addr)
+{
+	return *(volatile uint16_t *)addr;
+}
+
+static inline void csr_writel(uint32_t value, uint32_t addr)
+{
+	*((volatile uint32_t *)addr) = value;
+}
+
+static inline uint32_t csr_readl(uint32_t addr)
+{
+	return *(volatile uint32_t *)addr;
+}
+#endif /* ! __ASSEMBLER__ */
+
+#endif /* ! CSR_ACCESSORS_DEFINED */
+
+#endif /* __HW_COMMON_H */

sw/include/rgb.h

@@ -6,5 +6,6 @@ void rgb_mode_idle(void);
 void rgb_mode_done(void);
 void rgb_mode_writing(void);
 void rgb_mode_error(void);
+void rgb_mode_off(void);
 
 #endif /* _RGB_H_ */

sw/include/spi.h

@@ -50,45 +50,43 @@ struct spi_id {
 
 struct ff_spi;
 
-void spiPause(struct ff_spi *spi);
+void spiPause(void);
-void spiBegin(struct ff_spi *spi);
+void spiBegin(void);
-void spiEnd(struct ff_spi *spi);
+void spiEnd(void);
 
-//void spiSingleTx(struct ff_spi *spi, uint8_t out);
+//void spiSingleTx(uint8_t out);
-//uint8_t spiSingleRx(struct ff_spi *spi);
+//uint8_t spiSingleRx(void);
-//void spiDualTx(struct ff_spi *spi, uint8_t out);
+//void spiDualTx(uint8_t out);
-//void spiQuadTx(struct ff_spi *spi, uint8_t out);
+//void spiQuadTx(uint8_t out);
-void spiCommand(struct ff_spi *spi, uint8_t cmd);
+void spiCommand(uint8_t cmd);
-//uint8_t spiDualRx(struct ff_spi *spi);
+//uint8_t spiDualRx(void);
-//uint8_t spiQuadRx(struct ff_spi *spi);
+//uint8_t spiQuadRx(void);
-int spiTx(struct ff_spi *spi, uint8_t word);
+int spiTx(uint8_t word);
-uint8_t spiRx(struct ff_spi *spi);
+uint8_t spiRx(void);
-uint8_t spiReadStatus(struct ff_spi *spi, uint8_t sr);
+uint8_t spiReadStatus(uint8_t sr);
-void spiWriteStatus(struct ff_spi *spi, uint8_t sr, uint8_t val);
+void spiWriteStatus(uint8_t sr, uint8_t val);
-void spiReadSecurity(struct ff_spi *spi, uint8_t sr, uint8_t security[256]);
+void spiReadSecurity(uint8_t sr, uint8_t security[256]);
-void spiWriteSecurity(struct ff_spi *spi, uint8_t sr, uint8_t security[256]);
+void spiWriteSecurity(uint8_t sr, uint8_t security[256]);
-int spiSetType(struct ff_spi *spi, enum spi_type type);
+int spiSetType(enum spi_type type);
-int spiRead(struct ff_spi *spi, uint32_t addr, uint8_t *data, unsigned int count);
+int spiRead(uint32_t addr, uint8_t *data, unsigned int count);
-int spiIsBusy(struct ff_spi *spi);
+int spiIsBusy(void);
-int spiBeginErase32(struct ff_spi *spi, uint32_t erase_addr);
+int spiBeginErase32(uint32_t erase_addr);
-int spiBeginErase64(struct ff_spi *spi, uint32_t erase_addr);
+int spiBeginErase64(uint32_t erase_addr);
-int spiBeginWrite(struct ff_spi *spi, uint32_t addr, const void *data, unsigned int count);
+int spiBeginWrite(uint32_t addr, const void *data, unsigned int count);
 void spiEnableQuad(void);
 
-struct spi_id spiId(struct ff_spi *spi);
+struct spi_id spiId(void);
-void spiOverrideSize(struct ff_spi *spi, uint32_t new_size);
+void spiOverrideSize(uint32_t new_size);
 
-//int spi_wait_for_not_busy(struct ff_spi *spi);
+int spiWrite(uint32_t addr, const uint8_t *data, unsigned int count);
-int spiWrite(struct ff_spi *spi, uint32_t addr, const uint8_t *data, unsigned int count);
+uint8_t spiReset(void);
-uint8_t spiReset(struct ff_spi *spi);
+int spi_init(void);
-int spiInit(struct ff_spi *spi);
 
-void spiHold(struct ff_spi *spi);
+void spiHold(void);
-void spiUnhold(struct ff_spi *spi);
+void spiUnhold(void);
-void spiSwapTxRx(struct ff_spi *spi);
+void spiSwapTxRx(void);
 
-struct ff_spi *spiAlloc(void);
+void spiSetPin(enum spi_pin pin, int val);
-void spiSetPin(struct ff_spi *spi, enum spi_pin pin, int val);
 void spiFree(void);
 
 #endif /* BB_SPI_H_ */

sw/include/usb-desc.h

@@ -62,7 +62,7 @@ struct usb_string_descriptor_struct {
 #define PRODUCT_NAME              u"Fomu Factory Test " GIT_VERSION
 #define PRODUCT_NAME_LEN          sizeof(PRODUCT_NAME)
 #define EP0_SIZE                  64
-#define NUM_INTERFACE             1
+#define NUM_INTERFACE             2
 #define CONFIG_DESC_SIZE          67
 #define USB_DT_INTERFACE_SIZE			9
 

sw/include/usb.h

@@ -33,7 +33,7 @@ void usb_idle(void);
 void usb_disconnect(void);
 
 int usb_irq_happened(void);
-void usb_setup(const struct usb_setup_request *setup);
+int usb_setup(const struct usb_setup_request *setup);
 void usb_send(const void *data, int total_count);
 void usb_ack_in(void);
 void usb_ack_out(void);

sw/src/main.c

@@ -22,13 +22,11 @@ void isr(void)
 static void init(void)
 {
     rgb_init();
-    spi = spiAlloc();
+    spi_init();
-    spiInit(spi);
     irq_setmask(0);
     irq_setie(1);
     usb_init();
     time_init();
-
 }
 
 int main(int argc, char **argv)

sw/src/rgb.c

@@ -34,6 +34,7 @@ static enum {
     WRITING,
     ERROR,
     DONE,
+    OFF,
 } rgb_mode;
 
 static void rgb_write(uint8_t value, uint8_t addr) {
@@ -87,3 +88,7 @@ void rgb_mode_error(void) {
 void rgb_mode_done(void) {
     rgb_switch_mode(DONE, 8, 8, 2, 3, 0x14/4, 0xff/4, 0x44/4);
 }
+
+void rgb_mode_off(void) {
+    rgb_switch_mode(OFF, 0, 0, 0, 0, 0, 0, 0);    
+}

sw/src/tester.c

@@ -1,7 +1,68 @@
 #include <tester.h>
 #include <printf.h>
+#include <spi.h>
+#include <usb.h>
+#include <fomu/csr.h>
+#include <time.h>
+#include <rgb.h>
 
-void tester_poll(void) {
+int test_spi(void)
-    printf("Hello, world!\n");
+{
-    return;
+    uint8_t test_buffer[64];
+    uint8_t compare_buffer[sizeof(test_buffer)];
+    unsigned int i;
+    int errors = 0;
+
+    struct spi_id id = spiId();
+    spiSetType(ST_QUAD);
+    // printf("SPI Manufacturer: %02x\n", id.manufacturer_id);
+    // printf("SPI Device ID: %02x\n", id.device_id);
+    // printf("SPI Capacity: %02x %02x\n", id.memory_type, id.memory_size);
+
+    for (i = 0; i < sizeof(test_buffer); i++) {
+        test_buffer[i] = (i^0x9d) ^ (i<<5);
+    }
+    spiWrite(0, test_buffer, sizeof(test_buffer)-1);
+
+    for (i = 0; i < sizeof(compare_buffer); i++) {
+        compare_buffer[i] = 0;
+    }
+    spiRead(0, compare_buffer, sizeof(compare_buffer));
+
+    for (i = 0; i < sizeof(compare_buffer); i++) {
+        if (test_buffer[i] != compare_buffer[i]) {
+            // printf("SPI: Offset %d  Expected %02x  Got %02x\n", i, test_buffer[i], compare_buffer[i]);
+            errors++;
+        }
+    }
+
+    return errors;
+}
+
+int test_led(void) {
+    uint32_t pulses_per_second;
+    touch_oe_write(touch_oe_read() & ~(1 << 1));
+    // touch_oe_write(touch_oe_read() | (1 << 1));
+    // touch_o_write(touch_o_read() & ~(1 << 1));
+    rgb_bypass_write(1);
+    rgb_mode_off();
+    rgb_pwm_count_write(SYSTEM_CLOCK_FREQUENCY/1000*125);
+    printf("Blinking: ");
+    msleep(1000);
+    pulses_per_second = rgb_pwm_count_read();
+    rgb_pwm_count_write(SYSTEM_CLOCK_FREQUENCY/1000*125);
+    printf("%08x / %08x / %08x\n", pulses_per_second, rgb_sent_pulses_read(), rgb_detected_pulses_read());
+    return 0;
+}
+
+void tester_poll(void)
+{
+    int error_count = 0;
+    printf("\nHello, world!\n");
+    // error_count = test_spi();
+    // printf("SPI errors: %d\n", error_count);
+    while (1) {
+        usb_poll();
+        test_led();
+    }
 }

sw/src/usb-cdc.c

@@ -16,6 +16,9 @@ void cdc_set_connected(int is_connected)
 
 void _putchar(char character)
 {
+    if (character == '\n')
+        _putchar('\r');
+
     // Wait for buffer to be empty
     while (usb_ep_2_in_respond_read() == EPF_ACK)
         ;

sw/src/usb-desc.c

@@ -60,7 +60,7 @@
 static const uint8_t device_descriptor[] = {
     18,                                     // bLength
     1,                                      // bDescriptorType
-    0x01, 0x02,                             // bcdUSB
+    0x10, 0x01,                             // bcdUSB
     USB_CLASS_CDC,                          // bDeviceClass
     0x00,                                   // bDeviceSubClass
     0x00,                                   // bDeviceProtocol

sw/src/usb-epfifo.c

@@ -11,11 +11,12 @@ static const int max_byte_length = 64;
 #define EP2OUT_BUFFERS 4
 __attribute__((aligned(4)))
 #define EP0OUT_BUFFER_SIZE 256
-static uint8_t volatile usb_ep0out_buffer_len[EP0OUT_BUFFERS];
+// static uint8_t volatile usb_ep0out_buffer_len[EP0OUT_BUFFERS];
-static uint8_t volatile usb_ep0out_buffer[EP0OUT_BUFFERS][EP0OUT_BUFFER_SIZE];
+static uint8_t volatile usb_ep0out_buffer[EP0OUT_BUFFER_SIZE];
-static uint8_t volatile usb_ep0out_last_tok[EP0OUT_BUFFERS];
+static int wait_reply;
-static volatile uint8_t usb_ep0out_wr_ptr;
+static int wait_type;
-static volatile uint8_t usb_ep0out_rd_ptr;
+// static volatile uint8_t usb_ep0out_wr_ptr;
+// static volatile uint8_t usb_ep0out_rd_ptr;
 
 #define EP2OUT_BUFFER_SIZE 256
 static uint8_t volatile usb_ep2out_buffer_len[EP2OUT_BUFFERS];
@@ -76,8 +77,8 @@ void usb_connect(void) {
 }
 
 void usb_init(void) {
-    usb_ep0out_wr_ptr = 0;
+    // usb_ep0out_wr_ptr = 0;
-    usb_ep0out_rd_ptr = 0;
+    // usb_ep0out_rd_ptr = 0;
     usb_pullup_out_write(0);
     return;
 }
@@ -133,8 +134,7 @@ static void process_tx(void) {
 }
 
 void usb_send(const void *data, int total_count) {
-
+    while ((current_length || current_data) && (usb_ep_0_in_respond_read() != EPF_NAK))
-    while ((current_length || current_data))// && usb_ep_0_in_respond_read() != EPF_NAK)
         ;
     current_data = (uint8_t *)data;
     current_length = total_count;
@@ -157,34 +157,21 @@ void usb_isr(void) {
     uint8_t ep2in_pending = usb_ep_2_in_ev_pending_read();
     uint8_t ep2out_pending = usb_ep_2_out_ev_pending_read();
 
-    // We got an OUT or a SETUP packet.  Copy it to usb_ep0out_buffer
-    // and clear the "pending" bit.
-    if (ep0out_pending) {
-        uint8_t last_tok = usb_ep_0_out_last_tok_read();
-        
-        int byte_count = 0;
-        usb_ep0out_last_tok[usb_ep0out_wr_ptr] = last_tok;
-        volatile uint8_t * obuf = usb_ep0out_buffer[usb_ep0out_wr_ptr];
-        while (!usb_ep_0_out_obuf_empty_read()) {
-            obuf[byte_count++] = usb_ep_0_out_obuf_head_read();
-            usb_ep_0_out_obuf_head_write(0);
-        }
-        if (byte_count >= 2)
-            usb_ep0out_buffer_len[usb_ep0out_wr_ptr] = byte_count - 2 /* Strip off CRC16 */;
-        usb_ep0out_wr_ptr = (usb_ep0out_wr_ptr + 1) & (EP0OUT_BUFFERS-1);
-
-        if (last_tok == USB_PID_SETUP) {
-            usb_ep_0_in_dtb_write(1);
-            data_offset = 0;
-            current_length = 0;
-            current_data = NULL;
-        }
-        usb_ep_0_out_ev_pending_write(ep0out_pending);
-        usb_ep_0_out_respond_write(EPF_ACK);
-    }
-
     // We just got an "IN" token.  Send data if we have it.
     if (ep0in_pending) {
+        if (wait_reply == 2) {
+            wait_reply--;
+            if (!wait_type) {
+                wait_type = 1;
+            }
+        }
+        else if (wait_reply == 1) {
+            if (wait_type == 2) {
+                current_data = NULL;
+                current_length = 0;
+            }
+            wait_type = 0;
+        }
         usb_ep_0_in_respond_write(EPF_NAK);
         usb_ep_0_in_ev_pending_write(ep0in_pending);
     }
@@ -200,8 +187,17 @@ void usb_isr(void) {
     }
 
     if (ep2out_pending) {
+#ifdef LOOPBACK_TEST
         volatile uint8_t * obuf = usb_ep2out_buffer[usb_ep2out_wr_ptr];
         int sz = 0;
+
+        if (wait_reply == 2) {
+            wait_reply--;
+            wait_type = 2;
+        }
+        else if (wait_reply == 1) {
+            wait_reply--;
+        }
         while (!usb_ep_2_out_obuf_empty_read()) {
             if (sz < EP2OUT_BUFFER_SIZE)
                 obuf[sz++] = usb_ep_2_out_obuf_head_read() + 1;
@@ -211,12 +207,40 @@ void usb_isr(void) {
             usb_ep2out_buffer_len[usb_ep2out_wr_ptr] = sz - 2; /* Strip off CRC16 */
             usb_ep2out_wr_ptr = (usb_ep2out_wr_ptr + 1) & (EP2OUT_BUFFERS-1);
         }
-
+#else // !LOOPBACK_TEST
+        while (!usb_ep_2_out_obuf_empty_read()) {
+            usb_ep_2_out_obuf_head_write(0);
+        }
+#endif
         usb_ep_2_out_respond_write(EPF_ACK);
         usb_ep_2_out_ev_pending_write(ep2out_pending);
     }
 
-    return;
+    // We got an OUT or a SETUP packet.  Copy it to usb_ep0out_buffer
+    // and clear the "pending" bit.
+    if (ep0out_pending) {
+        unsigned int byte_count = 0;
+        for (byte_count = 0; byte_count < EP0OUT_BUFFER_SIZE; byte_count++)
+            usb_ep0out_buffer[byte_count] = 0;
+
+        byte_count = 0;
+        while (!usb_ep_0_out_obuf_empty_read()) {
+            usb_ep0out_buffer[byte_count++] = usb_ep_0_out_obuf_head_read();
+            usb_ep_0_out_obuf_head_write(0);
+        }
+
+        if (byte_count >= 2) {
+            usb_ep_0_in_dtb_write(1);
+            data_offset = 0;
+            current_length = 0;
+            current_data = NULL;
+            wait_reply = usb_setup((void *)usb_ep0out_buffer);
+        }
+        usb_ep_0_out_ev_pending_write(ep0out_pending);
+        usb_ep_0_out_respond_write(EPF_ACK);
+    }
+
+    process_tx();
 }
 
 void usb_ack_in(void) {
@@ -236,6 +260,7 @@ void usb_err(void) {
     usb_ep_0_in_respond_write(EPF_STALL);
 }
 
+#if 0
 int usb_recv(void *buffer, unsigned int buffer_len) {
 
     // Set the OUT response to ACK, since we are in a position to receive data now.
@@ -256,23 +281,25 @@ int usb_recv(void *buffer, unsigned int buffer_len) {
     }
     return 0;
 }
+#endif
 
 void usb_poll(void) {
-    // If some data was received, then process it.
-    while (usb_ep0out_rd_ptr != usb_ep0out_wr_ptr) {
-        const struct usb_setup_request *request = (const struct usb_setup_request *)(usb_ep0out_buffer[usb_ep0out_rd_ptr]);
-        // uint8_t len = usb_ep0out_buffer_len[usb_ep0out_rd_ptr];
-        uint8_t last_tok = usb_ep0out_last_tok[usb_ep0out_rd_ptr];
-
-        // usb_ep0out_buffer_len[usb_ep0out_rd_ptr] = 0;
-        usb_ep0out_rd_ptr = (usb_ep0out_rd_ptr + 1) & (EP0OUT_BUFFERS-1);
-
-        if (last_tok == USB_PID_SETUP) {
-            usb_setup(request);
-        }
-    }
-
     process_tx();
+#ifdef LOOPBACK_TEST
+    if (usb_ep2out_rd_ptr != usb_ep2out_wr_ptr) {
+        volatile uint8_t *buf = usb_ep2out_buffer[usb_ep2out_rd_ptr];
+        unsigned int len = usb_ep2out_buffer_len[usb_ep2out_rd_ptr];
+        unsigned int i;
+        while (usb_ep_2_in_respond_read() == EPF_ACK) {
+            ;
+        }
+        for (i = 0; i < len; i++) {
+            usb_ep_2_in_ibuf_head_write(buf[i]);
+        }
+        usb_ep_2_in_respond_write(EPF_ACK);
+        usb_ep2out_rd_ptr = (usb_ep2out_rd_ptr + 1) & (EP2OUT_BUFFERS-1);
+    }
+#endif
 }
 
 #endif /* CSR_USB_EP_0_OUT_EV_PENDING_ADDR */

sw/src/usb-setup.c

@@ -8,16 +8,30 @@
 static uint8_t reply_buffer[8];
 static uint8_t usb_configuration = 0;
 
-void usb_setup(const struct usb_setup_request *setup)
+int usb_setup(const struct usb_setup_request *setup)
 {
     const uint8_t *data = NULL;
     uint32_t datalen = 0;
     const usb_descriptor_list_t *list;
+    uint32_t max_length = setup->wLength;//((setup->wLength >> 8) & 0xff) | ((setup->wLength << 8) & 0xff00);
 
     switch (setup->wRequestAndType)
     {
 
+    // case 0x21a1: // Get Line Coding
+    //     reply_buffer[0] = 0x80;
+    //     reply_buffer[1] = 0x25;
+    //     reply_buffer[2] = 0x00;
+    //     reply_buffer[3] = 0x00;
+    //     reply_buffer[4] = 0x00;
+    //     reply_buffer[5] = 0x00;
+    //     reply_buffer[6] = 0x08;
+    //     data = reply_buffer;
+    //     datalen = 7;
+    //     break;
+
     case 0x2021: // Set Line Coding
+    case 0x20A1: // Set Line Coding
         break;
 
     case 0x2221: // Set control line state
@@ -49,7 +63,7 @@ void usb_setup(const struct usb_setup_request *setup)
         if (setup->wIndex > 0)
         {
             usb_err();
-            return;
+            return 0;
         }
         reply_buffer[0] = 0;
         reply_buffer[1] = 0;
@@ -64,7 +78,7 @@ void usb_setup(const struct usb_setup_request *setup)
         {
             // TODO: do we need to handle IN vs OUT here?
             usb_err();
-            return;
+            return 0;
         }
         break;
 
@@ -73,7 +87,7 @@ void usb_setup(const struct usb_setup_request *setup)
         {
             // TODO: do we need to handle IN vs OUT here?
             usb_err();
-            return;
+            return 0;
         }
         // XXX: Should we set the stall bit?
         // USB->DIEP0CTL |= USB_DIEP_CTL_STALL;
@@ -104,20 +118,20 @@ void usb_setup(const struct usb_setup_request *setup)
             }
         }
         usb_err();
-        return;
+        return 0;
 
     default:
         usb_err();
-        return;
+        return 0;
     }
 
 send:
     if (data && datalen) {
-        if (datalen > setup->wLength)
+        if (datalen > max_length)
-            datalen = setup->wLength;
+            datalen = max_length;
         usb_send(data, datalen);
     }
     else
         usb_ack_in();
-    return;
+    return 2;
 }