Amit Gandhi / mbed-dev

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targets/TARGET_Realtek/TARGET_AMEBA/spi_api.c@178:d650f5d4c87a, 2017-11-08 (annotated)

Committer:
AnnaBridge
Date:
Wed Nov 08 13:50:44 2017 +0000
Revision:
178:d650f5d4c87a
Parent:
171:19eb464bc2be 
This updates the lib to the mbed lib v 155

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 168:e84263d55307 1 /* mbed Microcontroller Library
AnnaBridge 168:e84263d55307 2 * Copyright (c) 2013-2016 Realtek Semiconductor Corp.
AnnaBridge 168:e84263d55307 3 *
AnnaBridge 168:e84263d55307 4 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 168:e84263d55307 5 * you may not use this file except in compliance with the License.
AnnaBridge 168:e84263d55307 6 * You may obtain a copy of the License at
AnnaBridge 168:e84263d55307 7 *
AnnaBridge 168:e84263d55307 8 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 168:e84263d55307 9 *
AnnaBridge 168:e84263d55307 10 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 168:e84263d55307 11 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 168:e84263d55307 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 168:e84263d55307 13 * See the License for the specific language governing permissions and
AnnaBridge 168:e84263d55307 14 * limitations under the License.
AnnaBridge 168:e84263d55307 15 */
AnnaBridge 168:e84263d55307 16
AnnaBridge 168:e84263d55307 17 #include "objects.h"
AnnaBridge 168:e84263d55307 18 #include "spi_api.h"
AnnaBridge 168:e84263d55307 19
AnnaBridge 168:e84263d55307 20 #include "PinNames.h"
AnnaBridge 168:e84263d55307 21 #include "pinmap.h"
AnnaBridge 168:e84263d55307 22 #include "hal_ssi.h"
AnnaBridge 168:e84263d55307 23
AnnaBridge 168:e84263d55307 24 extern u32 SystemGetCpuClk(VOID);
AnnaBridge 168:e84263d55307 25 extern VOID HAL_GPIO_PullCtrl(u32 pin, u32 mode);
AnnaBridge 168:e84263d55307 26
AnnaBridge 168:e84263d55307 27 void spi_tx_done_callback(VOID *obj);
AnnaBridge 168:e84263d55307 28 void spi_rx_done_callback(VOID *obj);
AnnaBridge 168:e84263d55307 29 void spi_bus_tx_done_callback(VOID *obj);
AnnaBridge 168:e84263d55307 30
AnnaBridge 168:e84263d55307 31
AnnaBridge 168:e84263d55307 32 //TODO: Load default Setting: It should be loaded from external setting file.
AnnaBridge 168:e84263d55307 33 extern const DW_SSI_DEFAULT_SETTING SpiDefaultSetting;
AnnaBridge 168:e84263d55307 34
AnnaBridge 168:e84263d55307 35 static const PinMap PinMap_SSI_MOSI[] = {
AnnaBridge 168:e84263d55307 36 {PE_2, RTL_PIN_PERI(SPI0, 0, S0), RTL_PIN_FUNC(SPI0, S0)},
AnnaBridge 168:e84263d55307 37 {PC_2, RTL_PIN_PERI(SPI0, 0, S1), RTL_PIN_FUNC(SPI0, S1)},
AnnaBridge 168:e84263d55307 38 {PA_1, RTL_PIN_PERI(SPI1, 1, S0), RTL_PIN_FUNC(SPI1, S0)},
AnnaBridge 168:e84263d55307 39 {PB_6, RTL_PIN_PERI(SPI1, 1, S1), RTL_PIN_FUNC(SPI1, S1)},
AnnaBridge 168:e84263d55307 40 {PD_6, RTL_PIN_PERI(SPI1, 1, S2), RTL_PIN_FUNC(SPI1, S2)},
AnnaBridge 168:e84263d55307 41 {PG_2, RTL_PIN_PERI(SPI2, 2, S0), RTL_PIN_FUNC(SPI2, S0)},
AnnaBridge 168:e84263d55307 42 {PE_6, RTL_PIN_PERI(SPI2, 2, S1), RTL_PIN_FUNC(SPI2, S1)},
AnnaBridge 168:e84263d55307 43 {PD_2, RTL_PIN_PERI(SPI2, 2, S2), RTL_PIN_FUNC(SPI2, S2)},
AnnaBridge 168:e84263d55307 44 {NC, NC, 0}
AnnaBridge 168:e84263d55307 45 };
AnnaBridge 168:e84263d55307 46
AnnaBridge 168:e84263d55307 47 static const PinMap PinMap_SSI_MISO[] = {
AnnaBridge 168:e84263d55307 48 {PE_3, RTL_PIN_PERI(SPI0, 0, S0), RTL_PIN_FUNC(SPI0, S0)},
AnnaBridge 168:e84263d55307 49 {PC_3, RTL_PIN_PERI(SPI0, 0, S1), RTL_PIN_FUNC(SPI0, S1)},
AnnaBridge 168:e84263d55307 50 {PA_0, RTL_PIN_PERI(SPI1, 1, S0), RTL_PIN_FUNC(SPI1, S0)},
AnnaBridge 168:e84263d55307 51 {PB_7, RTL_PIN_PERI(SPI1, 1, S1), RTL_PIN_FUNC(SPI1, S1)},
AnnaBridge 168:e84263d55307 52 {PD_7, RTL_PIN_PERI(SPI1, 1, S2), RTL_PIN_FUNC(SPI1, S2)},
AnnaBridge 168:e84263d55307 53 {PG_3, RTL_PIN_PERI(SPI2, 2, S0), RTL_PIN_FUNC(SPI2, S0)},
AnnaBridge 168:e84263d55307 54 {PE_7, RTL_PIN_PERI(SPI2, 2, S1), RTL_PIN_FUNC(SPI2, S1)},
AnnaBridge 168:e84263d55307 55 {PD_3, RTL_PIN_PERI(SPI2, 2, S2), RTL_PIN_FUNC(SPI2, S2)},
AnnaBridge 168:e84263d55307 56 {NC, NC, 0}
AnnaBridge 168:e84263d55307 57 };
AnnaBridge 168:e84263d55307 58
AnnaBridge 168:e84263d55307 59
AnnaBridge 168:e84263d55307 60 void spi_init (spi_t *obj, PinName mosi, PinName miso, PinName sclk, PinName ssel)
AnnaBridge 168:e84263d55307 61 {
AnnaBridge 168:e84263d55307 62 SSI_DBG_ENTRANCE("spi_init()\n");
AnnaBridge 168:e84263d55307 63
AnnaBridge 168:e84263d55307 64 uint32_t ssi_mosi, ssi_miso, ssi_peri;
AnnaBridge 168:e84263d55307 65 uint8_t ssi_idx, ssi_pinmux;
AnnaBridge 168:e84263d55307 66 PHAL_SSI_ADAPTOR pHalSsiAdaptor;
AnnaBridge 168:e84263d55307 67 PHAL_SSI_OP pHalSsiOp;
AnnaBridge 168:e84263d55307 68
AnnaBridge 168:e84263d55307 69 _memset((void*)obj, 0, sizeof(spi_t));
AnnaBridge 168:e84263d55307 70 obj->state = 0;
AnnaBridge 168:e84263d55307 71 uint32_t SystemClock = SystemGetCpuClk();
AnnaBridge 168:e84263d55307 72 uint32_t MaxSsiFreq = (SystemClock >> 2) >> 1;
AnnaBridge 168:e84263d55307 73
AnnaBridge 168:e84263d55307 74 /* SsiClockDivider doesn't support odd number */
AnnaBridge 168:e84263d55307 75
AnnaBridge 168:e84263d55307 76 DBG_SSI_INFO("SystemClock: %d\n", SystemClock);
AnnaBridge 168:e84263d55307 77 DBG_SSI_INFO("MaxSsiFreq : %d\n", MaxSsiFreq);
AnnaBridge 168:e84263d55307 78
AnnaBridge 168:e84263d55307 79 ssi_mosi = pinmap_peripheral(mosi, PinMap_SSI_MOSI);
AnnaBridge 168:e84263d55307 80 ssi_miso = pinmap_peripheral(miso, PinMap_SSI_MISO);
AnnaBridge 168:e84263d55307 81
AnnaBridge 168:e84263d55307 82 ssi_peri = pinmap_merge(ssi_mosi, ssi_miso);
AnnaBridge 168:e84263d55307 83 if (unlikely(ssi_peri == NC)) {
AnnaBridge 168:e84263d55307 84 DBG_SSI_ERR("spi_init(): Cannot find matched SSI index.\n");
AnnaBridge 168:e84263d55307 85 return;
AnnaBridge 168:e84263d55307 86 }
AnnaBridge 168:e84263d55307 87 obj->sclk = (u8)sclk;
AnnaBridge 168:e84263d55307 88 ssi_idx = RTL_GET_PERI_IDX(ssi_peri);
AnnaBridge 168:e84263d55307 89 ssi_pinmux = RTL_GET_PERI_SEL(ssi_peri);
AnnaBridge 168:e84263d55307 90 DBG_SSI_INFO("ssi_peri: %d, ssi_idx: %d, ssi_pinmux: %d\n", ssi_peri, ssi_idx, ssi_pinmux);
AnnaBridge 168:e84263d55307 91
AnnaBridge 168:e84263d55307 92 pHalSsiAdaptor = &obj->spi_adp;
AnnaBridge 168:e84263d55307 93 pHalSsiOp = &obj->spi_op;
AnnaBridge 168:e84263d55307 94
AnnaBridge 168:e84263d55307 95 pHalSsiAdaptor->Index = ssi_idx;
AnnaBridge 168:e84263d55307 96 pHalSsiAdaptor->PinmuxSelect = ssi_pinmux;
AnnaBridge 168:e84263d55307 97 pHalSsiAdaptor->Role = SSI_MASTER;
AnnaBridge 168:e84263d55307 98
AnnaBridge 168:e84263d55307 99 HalSsiOpInit((VOID*)pHalSsiOp);
AnnaBridge 168:e84263d55307 100
AnnaBridge 168:e84263d55307 101 pHalSsiOp->HalSsiSetDeviceRole(pHalSsiAdaptor, pHalSsiAdaptor->Role);
AnnaBridge 168:e84263d55307 102
AnnaBridge 168:e84263d55307 103 /* Pinmux workaround */
AnnaBridge 168:e84263d55307 104 if ((ssi_idx == 0) && (ssi_pinmux == SSI0_MUX_TO_GPIOC)) {
AnnaBridge 168:e84263d55307 105 EEPROM_PIN_CTRL(OFF);
AnnaBridge 168:e84263d55307 106 }
AnnaBridge 168:e84263d55307 107
AnnaBridge 168:e84263d55307 108 if ((ssi_idx == 0) && (ssi_pinmux == SSI0_MUX_TO_GPIOE)) {
AnnaBridge 168:e84263d55307 109 DBG_SSI_WARN(ANSI_COLOR_MAGENTA"SPI0 Pin may conflict with JTAG\r\n"ANSI_COLOR_RESET);
AnnaBridge 168:e84263d55307 110 }
AnnaBridge 168:e84263d55307 111
AnnaBridge 168:e84263d55307 112 //TODO: Implement default setting structure.
AnnaBridge 168:e84263d55307 113 pHalSsiOp->HalSsiLoadSetting(pHalSsiAdaptor, (void*)&SpiDefaultSetting);
AnnaBridge 168:e84263d55307 114 pHalSsiAdaptor->DefaultRxThresholdLevel = SpiDefaultSetting.RxThresholdLevel;
AnnaBridge 168:e84263d55307 115
AnnaBridge 168:e84263d55307 116 if(HalSsiInit(pHalSsiAdaptor) != HAL_OK){
AnnaBridge 168:e84263d55307 117 DBG_SSI_ERR(ANSI_COLOR_RED"spi_init(): SPI %x init fails.\n"ANSI_COLOR_RESET,pHalSsiAdaptor->Index);
AnnaBridge 168:e84263d55307 118 return;
AnnaBridge 168:e84263d55307 119 }
AnnaBridge 168:e84263d55307 120 osDelay(1);
AnnaBridge 168:e84263d55307 121 }
AnnaBridge 168:e84263d55307 122
AnnaBridge 168:e84263d55307 123 void spi_free (spi_t *obj)
AnnaBridge 168:e84263d55307 124 {
AnnaBridge 168:e84263d55307 125 PHAL_SSI_ADAPTOR pHalSsiAdaptor;
AnnaBridge 168:e84263d55307 126 pHalSsiAdaptor = &obj->spi_adp;
AnnaBridge 168:e84263d55307 127 HalSsiDeInit(pHalSsiAdaptor);
AnnaBridge 168:e84263d55307 128
AnnaBridge 168:e84263d55307 129 SPI0_MULTI_CS_CTRL(OFF);
AnnaBridge 168:e84263d55307 130 }
AnnaBridge 168:e84263d55307 131
AnnaBridge 168:e84263d55307 132 void spi_format (spi_t *obj, int bits, int mode, int slave)
AnnaBridge 168:e84263d55307 133 {
AnnaBridge 168:e84263d55307 134 PHAL_SSI_ADAPTOR pHalSsiAdaptor;
AnnaBridge 168:e84263d55307 135 PHAL_SSI_OP pHalSsiOp;
AnnaBridge 168:e84263d55307 136
AnnaBridge 168:e84263d55307 137 pHalSsiAdaptor = &obj->spi_adp;
AnnaBridge 168:e84263d55307 138 pHalSsiOp = &obj->spi_op;
AnnaBridge 168:e84263d55307 139
AnnaBridge 168:e84263d55307 140 pHalSsiAdaptor->DataFrameSize = (bits - 1);
AnnaBridge 168:e84263d55307 141
AnnaBridge 168:e84263d55307 142 /*
AnnaBridge 168:e84263d55307 143 * mode | POL PHA
AnnaBridge 168:e84263d55307 144 * -----+--------
AnnaBridge 168:e84263d55307 145 * 0 | 0 0
AnnaBridge 168:e84263d55307 146 * 1 | 0 1
AnnaBridge 168:e84263d55307 147 * 2 | 1 0
AnnaBridge 168:e84263d55307 148 * 3 | 1 1
AnnaBridge 168:e84263d55307 149 *
AnnaBridge 168:e84263d55307 150 * SCPOL_INACTIVE_IS_LOW = 0,
AnnaBridge 168:e84263d55307 151 * SCPOL_INACTIVE_IS_HIGH = 1
AnnaBridge 168:e84263d55307 152 *
AnnaBridge 168:e84263d55307 153 * SCPH_TOGGLES_IN_MIDDLE = 0,
AnnaBridge 168:e84263d55307 154 * SCPH_TOGGLES_AT_START = 1
AnnaBridge 168:e84263d55307 155 */
AnnaBridge 168:e84263d55307 156 switch (mode)
AnnaBridge 168:e84263d55307 157 {
AnnaBridge 168:e84263d55307 158 case 0:
AnnaBridge 168:e84263d55307 159 pHalSsiAdaptor->SclkPolarity = SCPOL_INACTIVE_IS_LOW;
AnnaBridge 168:e84263d55307 160 pHalSsiAdaptor->SclkPhase = SCPH_TOGGLES_IN_MIDDLE;
AnnaBridge 168:e84263d55307 161 break;
AnnaBridge 168:e84263d55307 162 case 1:
AnnaBridge 168:e84263d55307 163 pHalSsiAdaptor->SclkPolarity = SCPOL_INACTIVE_IS_LOW;
AnnaBridge 168:e84263d55307 164 pHalSsiAdaptor->SclkPhase = SCPH_TOGGLES_AT_START;
AnnaBridge 168:e84263d55307 165 break;
AnnaBridge 168:e84263d55307 166 case 2:
AnnaBridge 168:e84263d55307 167 pHalSsiAdaptor->SclkPolarity = SCPOL_INACTIVE_IS_HIGH;
AnnaBridge 168:e84263d55307 168 pHalSsiAdaptor->SclkPhase = SCPH_TOGGLES_IN_MIDDLE;
AnnaBridge 168:e84263d55307 169 break;
AnnaBridge 168:e84263d55307 170 case 3:
AnnaBridge 168:e84263d55307 171 pHalSsiAdaptor->SclkPolarity = SCPOL_INACTIVE_IS_HIGH;
AnnaBridge 168:e84263d55307 172 pHalSsiAdaptor->SclkPhase = SCPH_TOGGLES_AT_START;
AnnaBridge 168:e84263d55307 173 break;
AnnaBridge 168:e84263d55307 174 default: // same as 3
AnnaBridge 168:e84263d55307 175 pHalSsiAdaptor->SclkPolarity = SCPOL_INACTIVE_IS_HIGH;
AnnaBridge 168:e84263d55307 176 pHalSsiAdaptor->SclkPhase = SCPH_TOGGLES_AT_START;
AnnaBridge 168:e84263d55307 177 break;
AnnaBridge 168:e84263d55307 178 }
AnnaBridge 168:e84263d55307 179
AnnaBridge 168:e84263d55307 180 if (slave == 1) {
AnnaBridge 168:e84263d55307 181 if (pHalSsiAdaptor->Index == 0) {
AnnaBridge 168:e84263d55307 182 pHalSsiAdaptor->Role = SSI_SLAVE;
AnnaBridge 168:e84263d55307 183 pHalSsiAdaptor->SlaveOutputEnable = SLV_TXD_ENABLE; // <-- Slave only
AnnaBridge 168:e84263d55307 184 DBG_SSI_INFO("SPI0 is as slave\n");
AnnaBridge 168:e84263d55307 185 } else {
AnnaBridge 168:e84263d55307 186 DBG_SSI_ERR("The SPI%d cannot work as Slave mode, only SPI0 does.\r\n", pHalSsiAdaptor->Index);
AnnaBridge 168:e84263d55307 187 pHalSsiAdaptor->Role = SSI_MASTER;
AnnaBridge 168:e84263d55307 188 }
AnnaBridge 168:e84263d55307 189 } else {
AnnaBridge 168:e84263d55307 190 pHalSsiAdaptor->Role = SSI_MASTER;
AnnaBridge 168:e84263d55307 191 }
AnnaBridge 168:e84263d55307 192 pHalSsiOp->HalSsiSetDeviceRole(pHalSsiAdaptor, pHalSsiAdaptor->Role);
AnnaBridge 168:e84263d55307 193
AnnaBridge 168:e84263d55307 194 #ifdef CONFIG_GPIO_EN
AnnaBridge 168:e84263d55307 195 if (pHalSsiAdaptor->Role == SSI_SLAVE) {
AnnaBridge 168:e84263d55307 196 if (pHalSsiAdaptor->SclkPolarity == SCPOL_INACTIVE_IS_LOW) {
AnnaBridge 168:e84263d55307 197 HAL_GPIO_PullCtrl((u32)obj->sclk, hal_PullDown);
AnnaBridge 168:e84263d55307 198 } else {
AnnaBridge 168:e84263d55307 199 HAL_GPIO_PullCtrl((u32)obj->sclk, hal_PullUp);
AnnaBridge 168:e84263d55307 200 }
AnnaBridge 168:e84263d55307 201 }
AnnaBridge 168:e84263d55307 202 #endif
AnnaBridge 168:e84263d55307 203 HalSsiSetFormat(pHalSsiAdaptor);
AnnaBridge 168:e84263d55307 204 }
AnnaBridge 168:e84263d55307 205
AnnaBridge 168:e84263d55307 206 void spi_frequency (spi_t *obj, int hz)
AnnaBridge 168:e84263d55307 207 {
AnnaBridge 168:e84263d55307 208 PHAL_SSI_ADAPTOR pHalSsiAdaptor;
AnnaBridge 168:e84263d55307 209
AnnaBridge 168:e84263d55307 210 pHalSsiAdaptor = &obj->spi_adp;
AnnaBridge 168:e84263d55307 211 HalSsiSetSclk(pHalSsiAdaptor, (u32)hz);
AnnaBridge 168:e84263d55307 212 }
AnnaBridge 168:e84263d55307 213
AnnaBridge 168:e84263d55307 214 static inline void ssi_write (spi_t *obj, int value)
AnnaBridge 168:e84263d55307 215 {
AnnaBridge 168:e84263d55307 216 PHAL_SSI_ADAPTOR pHalSsiAdaptor;
AnnaBridge 168:e84263d55307 217 PHAL_SSI_OP pHalSsiOp;
AnnaBridge 168:e84263d55307 218
AnnaBridge 168:e84263d55307 219 pHalSsiAdaptor = &obj->spi_adp;
AnnaBridge 168:e84263d55307 220 pHalSsiOp = &obj->spi_op;
AnnaBridge 168:e84263d55307 221
AnnaBridge 168:e84263d55307 222 while (!pHalSsiOp->HalSsiWriteable(pHalSsiAdaptor));
AnnaBridge 168:e84263d55307 223 pHalSsiOp->HalSsiWrite((VOID*)pHalSsiAdaptor, value);
AnnaBridge 168:e84263d55307 224 }
AnnaBridge 168:e84263d55307 225
AnnaBridge 168:e84263d55307 226 static inline int ssi_read(spi_t *obj)
AnnaBridge 168:e84263d55307 227 {
AnnaBridge 168:e84263d55307 228 PHAL_SSI_ADAPTOR pHalSsiAdaptor;
AnnaBridge 168:e84263d55307 229 PHAL_SSI_OP pHalSsiOp;
AnnaBridge 168:e84263d55307 230
AnnaBridge 168:e84263d55307 231 pHalSsiAdaptor = &obj->spi_adp;
AnnaBridge 168:e84263d55307 232 pHalSsiOp = &obj->spi_op;
AnnaBridge 168:e84263d55307 233
AnnaBridge 168:e84263d55307 234 while (!pHalSsiOp->HalSsiReadable(pHalSsiAdaptor));
AnnaBridge 168:e84263d55307 235 return (int)pHalSsiOp->HalSsiRead(pHalSsiAdaptor);
AnnaBridge 168:e84263d55307 236 }
AnnaBridge 168:e84263d55307 237
AnnaBridge 168:e84263d55307 238 int spi_master_write (spi_t *obj, int value)
AnnaBridge 168:e84263d55307 239 {
AnnaBridge 168:e84263d55307 240 ssi_write(obj, value);
AnnaBridge 168:e84263d55307 241 return ssi_read(obj);
AnnaBridge 168:e84263d55307 242 }
AnnaBridge 168:e84263d55307 243
Kojto 171:19eb464bc2be 244 int spi_master_block_write(spi_t *obj, const char *tx_buffer, int tx_length,
Kojto 171:19eb464bc2be 245 char *rx_buffer, int rx_length, char write_fill)
AnnaBridge 168:e84263d55307 246 {
AnnaBridge 168:e84263d55307 247 int total = (tx_length > rx_length) ? tx_length : rx_length;
AnnaBridge 168:e84263d55307 248
AnnaBridge 168:e84263d55307 249 for (int i = 0; i < total; i++) {
Kojto 171:19eb464bc2be 250 char out = (i < tx_length) ? tx_buffer[i] : write_fill;
AnnaBridge 168:e84263d55307 251 char in = spi_master_write(obj, out);
AnnaBridge 168:e84263d55307 252 if (i < rx_length) {
AnnaBridge 168:e84263d55307 253 rx_buffer[i] = in;
AnnaBridge 168:e84263d55307 254 }
AnnaBridge 168:e84263d55307 255 }
AnnaBridge 168:e84263d55307 256
AnnaBridge 168:e84263d55307 257 return total;
AnnaBridge 168:e84263d55307 258 }
AnnaBridge 168:e84263d55307 259
AnnaBridge 168:e84263d55307 260 int spi_slave_receive (spi_t *obj)
AnnaBridge 168:e84263d55307 261 {
AnnaBridge 168:e84263d55307 262 PHAL_SSI_ADAPTOR pHalSsiAdaptor;
AnnaBridge 168:e84263d55307 263 PHAL_SSI_OP pHalSsiOp;
AnnaBridge 168:e84263d55307 264 int Readable;
AnnaBridge 168:e84263d55307 265 int Busy;
AnnaBridge 168:e84263d55307 266
AnnaBridge 168:e84263d55307 267 pHalSsiAdaptor = &obj->spi_adp;
AnnaBridge 168:e84263d55307 268 pHalSsiOp = &obj->spi_op;
AnnaBridge 168:e84263d55307 269
AnnaBridge 168:e84263d55307 270 Readable = pHalSsiOp->HalSsiReadable(pHalSsiAdaptor);
AnnaBridge 168:e84263d55307 271 Busy = (int)pHalSsiOp->HalSsiBusy(pHalSsiAdaptor);
AnnaBridge 168:e84263d55307 272 return ((Readable && !Busy) ? 1 : 0);
AnnaBridge 168:e84263d55307 273 }
AnnaBridge 168:e84263d55307 274
AnnaBridge 168:e84263d55307 275 int spi_slave_read (spi_t *obj)
AnnaBridge 168:e84263d55307 276 {
AnnaBridge 168:e84263d55307 277 return ssi_read(obj);
AnnaBridge 168:e84263d55307 278 }
AnnaBridge 168:e84263d55307 279
AnnaBridge 168:e84263d55307 280 void spi_slave_write (spi_t *obj, int value)
AnnaBridge 168:e84263d55307 281 {
AnnaBridge 168:e84263d55307 282 ssi_write(obj, value);
AnnaBridge 168:e84263d55307 283 }
AnnaBridge 168:e84263d55307 284
AnnaBridge 168:e84263d55307 285 int spi_busy (spi_t *obj)
AnnaBridge 168:e84263d55307 286 {
AnnaBridge 168:e84263d55307 287 PHAL_SSI_ADAPTOR pHalSsiAdaptor;
AnnaBridge 168:e84263d55307 288 PHAL_SSI_OP pHalSsiOp;
AnnaBridge 168:e84263d55307 289
AnnaBridge 168:e84263d55307 290 pHalSsiAdaptor = &obj->spi_adp;
AnnaBridge 168:e84263d55307 291 pHalSsiOp = &obj->spi_op;
AnnaBridge 168:e84263d55307 292
AnnaBridge 168:e84263d55307 293 return (int)pHalSsiOp->HalSsiBusy(pHalSsiAdaptor);
AnnaBridge 168:e84263d55307 294 }
AnnaBridge 168:e84263d55307 295
AnnaBridge 168:e84263d55307 296