FreeCalypso > hg > fc-tourmaline
annotate src/cs/drivers/drv_core/spi/spi_drv.c @ 169:adae850f9857
mmiSimToolkit.c: formatting fixes
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sun, 17 Jan 2021 23:43:19 +0000 |
parents | 4e78acac3d88 |
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rev | line source |
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0
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src/{condat,cs,gpf,nucleus}: import from Selenite
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1 /**********************************************************************************/ |
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2 /* TEXAS INSTRUMENTS INCORPORATED PROPRIETARY INFORMATION */ |
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3 /* */ |
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4 /* Property of Texas Instruments -- For Unrestricted Internal Use Only */ |
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5 /* Unauthorized reproduction and/or distribution is strictly prohibited. This */ |
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6 /* product is protected under copyright law and trade secret law as an */ |
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7 /* unpublished work. Created 1987, (C) Copyright 1997 Texas Instruments. All */ |
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8 /* rights reserved. */ |
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9 /* */ |
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10 /* */ |
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11 /* Filename : spi_drv.c */ |
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12 /* */ |
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13 /* Description : Functions to drive the SPI module. */ |
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14 /* The Serial Port Interface is a bidirectional 3 lines */ |
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15 /* interface dedicated to the transfer of data to and */ |
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16 /* from up to 5 external devices offering a 3 lines */ |
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17 /* serial interface. */ |
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18 /* In this project, it is only used to connect the TI */ |
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19 /* Analog BaseBand (ABB). */ |
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20 /* It is assumed that the ABB is connected as the SPI */ |
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21 /* device 0. */ |
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22 /* */ |
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src/{condat,cs,gpf,nucleus}: import from Selenite
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23 /* This interface is specified to be compatible with */ |
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24 /* the UMA1018M Philips, the FUJITSU MB15F02, the */ |
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25 /* SIEMENS PMB2306T synthesizers and the TI ABB. */ |
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26 /* */ |
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27 /* This serial port is based on a looped shift-register */ |
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28 /* thus allowing both transmit (PISO) and receive (SIPO) */ |
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29 /* modes. */ |
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30 /* */ |
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31 /* */ |
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32 /* Author : Pascal PUEL */ |
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33 /* */ |
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34 /* Version number : 1.45 */ |
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35 /* */ |
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36 /* Date and time : 07/01/03 */ |
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37 /* */ |
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38 /* Previous delta : Rework */ |
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39 /* */ |
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40 /**********************************************************************************/ |
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41 |
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42 #include "spi/spi_drv.h" |
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43 |
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44 |
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45 |
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46 /*-----------------------------------------------------------------------*/ |
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47 /* SPI_InitDev() */ |
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48 /* */ |
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49 /* This function initializes the SPI registers for an external device */ |
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50 /* connected to the serial port. */ |
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51 /* */ |
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52 /*-----------------------------------------------------------------------*/ |
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53 void SPI_InitDev(T_SPI_DEV *Device) |
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54 { |
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55 unsigned short Param,Gate,Shiftval; |
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56 unsigned short Mask = 0x7bde; |
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57 |
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58 /* Clock enable, mask ITs and pre scale setting */ |
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59 * (volatile SYS_UWORD16 *) SPI_REG_SET1 = (SPI_CLK_ON | Device->PrescVal | SPI_IT_MASK_0 | SPI_IT_MASK_1); |
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60 |
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61 /* Building the parameter for REG_SET2 initialization */ |
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62 Shiftval = Device->DevId >> 7; |
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63 Param = (Device->ClkEdge | Device->TspEnLevel | Device->TspEnForm)<<Shiftval ; |
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64 Gate = Mask<<Shiftval; |
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65 |
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66 * (volatile SYS_UWORD16 *) SPI_REG_SET2 = (* (volatile SYS_UWORD16 *) SPI_REG_SET2 & Gate) | Param; |
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67 |
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68 |
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69 /* Configuring CTRL_REG : this writting erases the previous one */ |
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70 * (volatile SYS_UWORD16 *) SPI_REG_CTRL = (Device->DataTrLength | Device->DevId); |
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71 |
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72 /* Stop the SPI clock */ |
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73 #ifdef SPI_CLK_LOW_POWER |
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74 SPI_CLK_DISABLE |
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75 #endif |
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76 } |
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77 |
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78 |
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79 |