pcc2_reg_read32
tc1 = pcc2_reg_read32(sys_pcctwo, PCC2REG_TIMER1_COUNTER);
tc2 = pcc2_reg_read32(sys_pcctwo, PCC2REG_TIMER1_COUNTER);
tc = pcc2_reg_read32(sys_pcctwo, PCC2REG_TIMER1_COUNTER);
if (tc > pcc2_reg_read32(sys_pcctwo, PCC2REG_TIMER1_COUNTER))