mongoose/mip/driver_tm4c.h

#pragma once

struct mip_driver_tm4c {
  // MDC clock divider. MDC clock is derived from SYSCLK, must not exceed 2.5MHz
  //    SYSCLK range   DIVIDER   mdc_cr VALUE
  //    -------------------------------------
  //                                -1  <-- tell driver to guess the value
  //    60-100 MHz    SYSCLK/42      0
  //    100-150 MHz   SYSCLK/62      1  <-- value for EK-TM4C129* on max speed
  //    20-35 MHz     SYSCLK/16      2
  //    35-60 MHz     SYSCLK/26      3
  //    0x4-0xF Reserved
  int mdc_cr;  // Valid values: -1, 0, 1, 2, 3
};