# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1360522231 0
# Node ID e015ad3df503cdee129754aca91f8f22809501ec
# Parent  3cd84546a059a84d6cda9427b89fdb248b67a233
Added a function to check the oscillator, although this does not seem to obtain
useful information from the device.

diff -r 3cd84546a059 -r e015ad3df503 test.c
--- a/test.c	Sun Feb 10 18:37:23 2013 +0000
+++ b/test.c	Sun Feb 10 18:50:31 2013 +0000
@@ -16,6 +16,7 @@
 #include <ubb/ubb.h>
 #include <stdio.h>
 #include <time.h>
+#include <unistd.h>
 
 /* Pin assignments:
  *
@@ -44,12 +45,17 @@
 #define MAX_REG_READ                0x00
 #define MAX_REG_WRITE               0x02
 
+#define MAX_REG_USBIRQ              13
 #define MAX_REG_USBCTL              15
 #define MAX_REG_PINCTL              17
 #define MAX_REG_REVISION            18
 #define MAX_REG_MODE                27
 #define MAX_REG_HRSL                31
 
+#define MAX_USBIRQ_OSCOKIRQ         1
+#define MAX_USBIRQ_NOVBUSIRQ        32
+#define MAX_USBIRQ_VBUSIRQ          64
+
 #define MAX_USBCTL_PWRDOWN          16
 #define MAX_USBCTL_CHIPRES          32
 
@@ -218,6 +224,18 @@
     spi_end();
 }
 
+uint8_t check()
+{
+    uint8_t oscillator = 0;
+
+    spi_begin();
+    spi_sendrecv(max_reg_read(MAX_REG_USBIRQ));
+    oscillator = spi_sendrecv(0);
+    spi_end();
+
+    return (oscillator & ~(MAX_USBIRQ_NOVBUSIRQ | MAX_USBIRQ_VBUSIRQ)) == MAX_USBIRQ_OSCOKIRQ;
+}
+
 int main(int argc, char *argv[])
 {
     uint8_t status = 0, revision = 0, hrsl = 0;
@@ -254,10 +272,10 @@
     spi_sendrecv(max_reg_write(MAX_REG_PINCTL));
     spi_sendrecv(MAX_PINCTL_INTLEVEL_LEVEL | MAX_PINCTL_FDUPSPI_FULL);
     spi_end();
-    printf("INT set to %d\n", PIN(MAX_INT));
 
     reset();
     chipreset();
+    printf("Ready? %d\n", check());
 
     /* Set host mode. */
 
@@ -266,7 +284,7 @@
     spi_sendrecv(max_reg_write(MAX_REG_MODE));
     spi_sendrecv(MAX_MODE_HOST | MAX_MODE_SEPIRQ_OFF | MAX_MODE_DMPULLDN | MAX_MODE_DPPULLDN);
     spi_end();
-    printf("INT set to %d\n", PIN(MAX_INT));
+    printf("Ready? %d\n", check());
 
     /* Read from the REVISION register. */
 
@@ -277,7 +295,7 @@
     spi_end();
     printf("Status = %x\n", status);
     printf("Revision = %x\n", revision);
-    printf("INT set to %d\n", PIN(MAX_INT));
+    printf("Ready? %d\n", check());
 
     printf("HRSL...\n");
     spi_begin();
@@ -286,7 +304,7 @@
     spi_end();
     printf("Status = %x\n", status);
     printf("HRSL = %x\n", hrsl);
-    printf("INT set to %d\n", PIN(MAX_INT));
+    printf("Ready? %d\n", check());
 
     printf("Closing...\n");
     ubb_close(0);