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view src/cs/layer1/include/l1_ctl.h @ 629:3231dd9b38c1

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armio.c: make GPIOs 8 & 13 outputs driving 1 on all "classic" targets Calypso GPIOs 8 & 13 are pinmuxed with MCUEN1 & MCUEN2, respectively, and on powerup these pins are MCUEN, i.e., outputs driving 1. TI's code for C-Sample and earlier turns them into GPIOs configured as outputs also driving 1 - so far, so good - but TI's code for BOARD 41 (which covers D-Sample, Leonardo and all real world Calypso devices derived from the latter) switches them from MCUEN to GPIOs, but then leaves them as inputs. Given that the hardware powerup state of these two pins is outputs driving 1, every Calypso board design MUST be compatible with such driving; typically these GPIO signals will be either unused and unconnected or connected as outputs driving some peripheral. Turning these pins into GPIO inputs will result in floating inputs on every reasonably-wired board, thus I am convinced that this configuration is nothing but a bug on the part of whoever wrote this code at TI. This floating input bug had already been fixed earlier for GTA modem and FCDEV3B targets; the present change makes the fix unconditional for all "classic" targets. The newly affected targets are D-Sample, Leonardo, Tango and GTM900.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 02 Jan 2020 05:38:26 +0000
parents 50a15a54801e
children
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/************* Revision Controle System Header *************
 *                  GSM Layer 1 software 
 * L1_CTL.H
 *
 *        Filename l1_ctl.h
 *  Copyright 2003 (C) Texas Instruments  
 *
 ************* Revision Controle System Header *************/

/************************************/
/* Automatic timing control (TOA)   */
/************************************/
#define  C_RED              1   // Factor used to reduce the maximum accumulated values. 
                                // Default : 1/2 
#define  C_GEW              1   // Weighting factor. Default : 1/2   

#define  C_SNRGR         2560   // 2.5 F6.10
#define  C_SNR_THR       8192   // 8   F6.10
#define  TOA_HISTO_LEN   11     // Histogram length          

/*
 * FreeCalypso Frankenstein: the following definition has been added
 * from LoCosto version of this file, as it is used by l1_cmplx.c
 * fairly extensively.
 *
 * Disassembly-matching reconstruction has revealed that the constant
 * in question was originally 210 in the TCS211 version, and then
 * increased to 220 in the LoCosto source.  We currently seek to match
 * TCS211 without any changes, hence we are setting it back to 210.
 */
#define   IL_FOR_RXLEV_SNR      210 // RX POWER LEVEL

/************************************/
/* Automatic Gain Control (AGC)     */
/************************************/

#define INDEX_MIN           0
#define INDEX_MAX         240   // 120

/************************************/
/* Automatic frequency compensation */
/************************************/
#define  C_thr_snr        2560     //  1/0.4    * 2**10               
#define  C_thr_P          524288L  //  0.5      * 2**20               
#define  C_cov_start      838861L  //  0.8      * 2**20               
#define  C_a0_kalman      10486L   //  0.01     * 2**20               
#define  C_g_kalman       53687091L//  0.05     * 2**30               
#define  C_N_del          2        //  delay of frequency control loop
                                   //  due to C W R pipeline          
#define  C_Q              3L       //  0.000003 * 2**20               
#define  C_thr_K          209715L  //  0.2      * 2**20               
#define  C_thr_phi        328      //  0.01     * 2**15

#if (VCXO_ALGO == 1)
  #define  C_WIN_AVG_SIZE_M       64  // average size M
  #define  C_PSI_AVG_SIZE_D       32  // distance size D
  #define  C_MSIZE                (C_WIN_AVG_SIZE_M * C_PSI_AVG_SIZE_D) // Data history for predictor
  #define  C_RGAP_BAD_SNR_COUNT_B 32  // bad SNR count B 
  #define  ALGO_AFC_RXGAP            1  // reception gap algo
  #define  ALGO_AFC_KALMAN           1  // Kalman filter
  #define  ALGO_AFC_LQG_PREDICTOR    2  // LQG filter + rgap predictor
  #define  ALGO_AFC_KALMAN_PREDICTOR 3 // Kalman filter + rgap predictor
#endif

#if ((ANLG_FAM == 1) || (ANLG_FAM == 2) || (ANLG_FAM == 3))
   // clipping related to AFC DAC linearity range
  #define  C_max_step        32000   //   4000 * 2**3                    
  #define  C_min_step       -32000   //  -4000 * 2**3                   
#endif