FreeCalypso > hg > fc-magnetite
diff src/cs/drivers/drv_core/spi/spi_drv.c @ 0:945cf7f506b2
src/cs: chipsetsw import from tcs211-fcmodem
binary blobs and LCD demo files have been excluded,
all line endings are LF only
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sun, 25 Sep 2016 22:50:11 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/cs/drivers/drv_core/spi/spi_drv.c Sun Sep 25 22:50:11 2016 +0000 @@ -0,0 +1,79 @@ +/**********************************************************************************/ +/* TEXAS INSTRUMENTS INCORPORATED PROPRIETARY INFORMATION */ +/* */ +/* Property of Texas Instruments -- For Unrestricted Internal Use Only */ +/* Unauthorized reproduction and/or distribution is strictly prohibited. This */ +/* product is protected under copyright law and trade secret law as an */ +/* unpublished work. Created 1987, (C) Copyright 1997 Texas Instruments. All */ +/* rights reserved. */ +/* */ +/* */ +/* Filename : spi_drv.c */ +/* */ +/* Description : Functions to drive the SPI module. */ +/* The Serial Port Interface is a bidirectional 3 lines */ +/* interface dedicated to the transfer of data to and */ +/* from up to 5 external devices offering a 3 lines */ +/* serial interface. */ +/* In this project, it is only used to connect the TI */ +/* Analog BaseBand (ABB). */ +/* It is assumed that the ABB is connected as the SPI */ +/* device 0. */ +/* */ +/* This interface is specified to be compatible with */ +/* the UMA1018M Philips, the FUJITSU MB15F02, the */ +/* SIEMENS PMB2306T synthesizers and the TI ABB. */ +/* */ +/* This serial port is based on a looped shift-register */ +/* thus allowing both transmit (PISO) and receive (SIPO) */ +/* modes. */ +/* */ +/* */ +/* Author : Pascal PUEL */ +/* */ +/* Version number : 1.45 */ +/* */ +/* Date and time : 07/01/03 */ +/* */ +/* Previous delta : Rework */ +/* */ +/**********************************************************************************/ + +#include "spi/spi_drv.h" + + + +/*-----------------------------------------------------------------------*/ +/* SPI_InitDev() */ +/* */ +/* This function initializes the SPI registers for an external device */ +/* connected to the serial port. */ +/* */ +/*-----------------------------------------------------------------------*/ +void SPI_InitDev(T_SPI_DEV *Device) +{ + unsigned short Param,Gate,Shiftval; + unsigned short Mask = 0x7bde; + + /* Clock enable, mask ITs and pre scale setting */ + * (volatile SYS_UWORD16 *) SPI_REG_SET1 = (SPI_CLK_ON | Device->PrescVal | SPI_IT_MASK_0 | SPI_IT_MASK_1); + + /* Building the parameter for REG_SET2 initialization */ + Shiftval = Device->DevId >> 7; + Param = (Device->ClkEdge | Device->TspEnLevel | Device->TspEnForm)<<Shiftval ; + Gate = Mask<<Shiftval; + + * (volatile SYS_UWORD16 *) SPI_REG_SET2 = (* (volatile SYS_UWORD16 *) SPI_REG_SET2 & Gate) | Param; + + + /* Configuring CTRL_REG : this writting erases the previous one */ + * (volatile SYS_UWORD16 *) SPI_REG_CTRL = (Device->DataTrLength | Device->DevId); + + /* Stop the SPI clock */ + #ifdef SPI_CLK_LOW_POWER + SPI_CLK_DISABLE + #endif +} + + +