+ time_t start = timer_clock();
+
+ while (!(SMC_SR & SMC_SR_RB_EDGE0))
+ {
+ cpu_relax();
+ if (timer_clock() - start > MT29F_TMOUT)
+ {
+ LOG_INFO("mt29f: R/B timeout\n");
+ return false;
+ }
+ }
+
+ return true;
+}
+
+/*
+ * Wait for transfer to complete until timeout.
+ * If transfer completes return true, false in case of timeout.
+ */
+static bool waitTransferComplete(void)
+{
+ time_t start = timer_clock();
+
+ while (!(SMC_SR & SMC_SR_XFRDONE))
+ {
+ cpu_relax();
+ if (timer_clock() - start > MT29F_TMOUT)
+ {
+ LOG_INFO("mt29f: xfer complete timeout\n");
+ return false;
+ }
+ }
+
+ return true;