annotate gsm-fw/bsp/abb+spi/abb_inline.h @ 148:63750f70796d

gsm-fw/bsp/abb+spi: initial import from the Leonardo TCS211 version
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sat, 16 Nov 2013 19:03:37 +0000
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children 971e84124a6f
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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7 /* unpublished work.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 : abb_inline.h */
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12 /* */
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13 /* Description : inline functions to drive the ABB device. */
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14 /* The Serial Port Interface is used to connect the TI */
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15 /* Analog BaseBand (ABB). */
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16 /* It is assumed that the ABB is connected as the SPI */
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17 /* device 0. */
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18 /* */
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19 /* Author : Pascal PUEL */
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20 /* */
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21 /* Version number : 1.0 */
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22 /* */
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23 /* Date and time : Dec 2002 */
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24 /* */
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25 /* Previous delta : Creation */
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26 /* */
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27 /**********************************************************************************/
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28
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29 #ifndef __ABB_INLINE_H__
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30 #define __ABB_INLINE_H__
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31
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32 #include "l1sw.cfg"
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33
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34 #if (OP_L1_STANDALONE == 0)
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35 #include "main/sys_types.h"
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36 #else
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37 #include "sys_types.h"
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38 #endif
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39
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40 #include "spi/spi_drv.h"
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41
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42 // MACROS
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43 #define ABB_WRITE_REG(reg, data) { \
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44 SPI_WRITE_TX_MSB((data << 6) | reg) \
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45 SPI_START_WRITE }
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46
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47 #define ABB_READ_REG(reg) { \
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48 SPI_WRITE_TX_MSB(reg | 1) \
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49 SPI_START_READ }
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50
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51
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52 #define ABB_SET_PAGE(page) ABB_WRITE_REG(PAGEREG, page)
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53
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54 #define SEVEN_CYCLES_13M_NS 539
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55
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56 // INLINE FUNCTIONS
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57 /*-----------------------------------------------------------------------*/
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58 /* ABB_SetPage() */
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59 /* */
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60 /* This function sets the right page in the ABB register PAGEREG. */
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61 /* */
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62 /*-----------------------------------------------------------------------*/
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63 static inline void ABB_SetPage(SYS_UWORD16 page)
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64 {
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65 volatile SYS_UWORD16 status;
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66
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67 ABB_SET_PAGE(page);
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68 while(((status = * (volatile SYS_UWORD16 *) SPI_REG_STATUS) & WE_ST) == 0);
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69
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70 // if IBIC is already processing another request (from the BSP)
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71 // the USP request is delayed by 3 clock cycles
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72 // which gives a total of 7 clock cycles ( = 539 ns at 13 MHz) in the worst case
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73 wait_ARM_cycles(convert_nanosec_to_cycles(SEVEN_CYCLES_13M_NS));
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74 }
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75
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76
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77 /*-----------------------------------------------------------------------*/
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78 /* ABB_WriteRegister() */
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79 /* */
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80 /* This function writes "data" in the ABB register "abb_reg". */
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81 /* */
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82 /*-----------------------------------------------------------------------*/
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83 static inline void ABB_WriteRegister(SYS_UWORD16 abb_reg, SYS_UWORD16 data)
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84 {
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85 volatile SYS_UWORD16 status;
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86
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87 ABB_WRITE_REG(abb_reg, data);
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88 while(((status = * (volatile SYS_UWORD16 *) SPI_REG_STATUS) & WE_ST) == 0);
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89
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90 // if IBIC is already processing another request (from the BSP)
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91 // the USP request is delayed by 3 clock cycles
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92 // which gives a total of 7 clock cycles ( = 539 ns at 13 MHz) in the worst case
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93 wait_ARM_cycles(convert_nanosec_to_cycles(SEVEN_CYCLES_13M_NS));
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94
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95 }
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96
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97
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98 /*-----------------------------------------------------------------------*/
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99 /* ABB_ReadRegister() */
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100 /* */
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101 /* This function reads the ABB register "abb_reg" and returns */
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102 /* the real register value. */
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103 /* */
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104 /*-----------------------------------------------------------------------*/
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105 static inline SYS_UWORD16 ABB_ReadRegister(SYS_UWORD16 abb_reg)
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106 {
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107 volatile SYS_UWORD16 status;
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108
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109 // First part of read access to the ABB register
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110 ABB_READ_REG(abb_reg);
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111 while(((status = * (volatile SYS_UWORD16 *) SPI_REG_STATUS) & RE_ST) == 0);
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112
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113 // if IBIC is already processing another request (from the BSP)
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114 // the USP request is delayed by 3 clock cycles
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115 // which gives a total of 7 clock cycles ( = 539 ns at 13 MHz) in the worst case
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116 wait_ARM_cycles(convert_nanosec_to_cycles(SEVEN_CYCLES_13M_NS));
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117
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118 // Second part of read access to the ABB register
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119 ABB_READ_REG(abb_reg);
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120 while(((status = * (volatile SYS_UWORD16 *) SPI_REG_STATUS) & RE_ST) == 0);
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121
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122 // if IBIC is already processing another request (from the BSP)
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123 // the USP request is delayed by 3 clock cycles
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124 // which gives a total of 7 clock cycles ( = 539 ns at 13 MHz) in the worst case
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125 wait_ARM_cycles(convert_nanosec_to_cycles(SEVEN_CYCLES_13M_NS));
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126
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127 return ((SPI_ReadRX_LSB() >> 6) & 0x3ff);
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128 }
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129
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130
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131 #endif // __ABB_INLINE_H__