Genadi Zawidowski / mbed-dev

mbed library sources. Supersedes mbed-src. Edited target satm32f446 for user USART3 pins

Dependents:   IGLOO_board

Fork of mbed-dev by mbed official

targets/TARGET_TOSHIBA/TARGET_TMPM46B/spi_api.c@188:3f10722804f9, 2018-07-30 (annotated)

Committer:
ua1arn
Date:
Mon Jul 30 12:31:10 2018 +0000
Revision:
188:3f10722804f9
Parent:
184:08ed48f1de7f 
before add multi-configuration USB descriptors

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 184:08ed48f1de7f 1 /* mbed Microcontroller Library
AnnaBridge 184:08ed48f1de7f 2 *******************************************************************************
AnnaBridge 184:08ed48f1de7f 3 * (C)Copyright TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION 2017 All rights reserved
AnnaBridge 184:08ed48f1de7f 4 * All rights reserved.
AnnaBridge 184:08ed48f1de7f 5 *
AnnaBridge 184:08ed48f1de7f 6 * Redistribution and use in source and binary forms, with or without
AnnaBridge 184:08ed48f1de7f 7 * modification, are permitted provided that the following conditions are met:
AnnaBridge 184:08ed48f1de7f 8 *
AnnaBridge 184:08ed48f1de7f 9 * 1. Redistributions of source code must retain the above copyright notice,
AnnaBridge 184:08ed48f1de7f 10 * this list of conditions and the following disclaimer.
AnnaBridge 184:08ed48f1de7f 11 * 2. Redistributions in binary form must reproduce the above copyright notice,
AnnaBridge 184:08ed48f1de7f 12 * this list of conditions and the following disclaimer in the documentation
AnnaBridge 184:08ed48f1de7f 13 * and/or other materials provided with the distribution.
AnnaBridge 184:08ed48f1de7f 14 * 3. Neither the name of STMicroelectronics nor the names of its contributors
AnnaBridge 184:08ed48f1de7f 15 * may be used to endorse or promote products derived from this software
AnnaBridge 184:08ed48f1de7f 16 * without specific prior written permission.
AnnaBridge 184:08ed48f1de7f 17 *
AnnaBridge 184:08ed48f1de7f 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AnnaBridge 184:08ed48f1de7f 19 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
AnnaBridge 184:08ed48f1de7f 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
AnnaBridge 184:08ed48f1de7f 21 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
AnnaBridge 184:08ed48f1de7f 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
AnnaBridge 184:08ed48f1de7f 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
AnnaBridge 184:08ed48f1de7f 24 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
AnnaBridge 184:08ed48f1de7f 25 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
AnnaBridge 184:08ed48f1de7f 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
AnnaBridge 184:08ed48f1de7f 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
AnnaBridge 184:08ed48f1de7f 28 *******************************************************************************
AnnaBridge 184:08ed48f1de7f 29 */
AnnaBridge 184:08ed48f1de7f 30 #include "spi_api.h"
AnnaBridge 184:08ed48f1de7f 31 #include "mbed_error.h"
AnnaBridge 184:08ed48f1de7f 32 #include "pinmap.h"
AnnaBridge 184:08ed48f1de7f 33 #include "tmpm46b_ssp.h"
AnnaBridge 184:08ed48f1de7f 34
AnnaBridge 184:08ed48f1de7f 35 static const PinMap PinMap_SPI_SCLK[] = {
AnnaBridge 184:08ed48f1de7f 36 {PK4, SPI_0, PIN_DATA(2, 1)},
AnnaBridge 184:08ed48f1de7f 37 {PF3, SPI_1, PIN_DATA(5, 1)},
AnnaBridge 184:08ed48f1de7f 38 {PD3, SPI_2, PIN_DATA(1, 1)},
AnnaBridge 184:08ed48f1de7f 39 {NC, NC, 0}
AnnaBridge 184:08ed48f1de7f 40 };
AnnaBridge 184:08ed48f1de7f 41
AnnaBridge 184:08ed48f1de7f 42 static const PinMap PinMap_SPI_MOSI[] = {
AnnaBridge 184:08ed48f1de7f 43 {PK3, SPI_0, PIN_DATA(2, 1)},
AnnaBridge 184:08ed48f1de7f 44 {PF4, SPI_1, PIN_DATA(5, 1)},
AnnaBridge 184:08ed48f1de7f 45 {PD2, SPI_2, PIN_DATA(1, 1)},
AnnaBridge 184:08ed48f1de7f 46 {NC, NC, 0}
AnnaBridge 184:08ed48f1de7f 47 };
AnnaBridge 184:08ed48f1de7f 48
AnnaBridge 184:08ed48f1de7f 49 static const PinMap PinMap_SPI_MISO[] = {
AnnaBridge 184:08ed48f1de7f 50 {PK2, SPI_0, PIN_DATA(2, 0)},
AnnaBridge 184:08ed48f1de7f 51 {PF5, SPI_1, PIN_DATA(5, 0)},
AnnaBridge 184:08ed48f1de7f 52 {PD1, SPI_2, PIN_DATA(1, 0)},
AnnaBridge 184:08ed48f1de7f 53 {NC, NC, 0}
AnnaBridge 184:08ed48f1de7f 54 };
AnnaBridge 184:08ed48f1de7f 55
AnnaBridge 184:08ed48f1de7f 56 static const PinMap PinMap_SPI_SSEL[] = {
AnnaBridge 184:08ed48f1de7f 57 {PK1, SPI_0, PIN_DATA(2, 1)},
AnnaBridge 184:08ed48f1de7f 58 {PF6, SPI_1, PIN_DATA(5, 1)},
AnnaBridge 184:08ed48f1de7f 59 {PD0, SPI_2, PIN_DATA(1, 1)},
AnnaBridge 184:08ed48f1de7f 60 {NC, NC, 0}
AnnaBridge 184:08ed48f1de7f 61 };
AnnaBridge 184:08ed48f1de7f 62
AnnaBridge 184:08ed48f1de7f 63 #define TMPM46B_SPI_2_FMAX 20000000
AnnaBridge 184:08ed48f1de7f 64 #define TMPM46B_SPI_FMAX 10000000
AnnaBridge 184:08ed48f1de7f 65
AnnaBridge 184:08ed48f1de7f 66 void spi_init(spi_t *obj, PinName mosi, PinName miso, PinName sclk, PinName ssel)
AnnaBridge 184:08ed48f1de7f 67 {
AnnaBridge 184:08ed48f1de7f 68 SSP_InitTypeDef config;
AnnaBridge 184:08ed48f1de7f 69
AnnaBridge 184:08ed48f1de7f 70 // Check pin parameters
AnnaBridge 184:08ed48f1de7f 71 SPIName spi_mosi = (SPIName)pinmap_peripheral(mosi, PinMap_SPI_MOSI);
AnnaBridge 184:08ed48f1de7f 72 SPIName spi_miso = (SPIName)pinmap_peripheral(miso, PinMap_SPI_MISO);
AnnaBridge 184:08ed48f1de7f 73 SPIName spi_sclk = (SPIName)pinmap_peripheral(sclk, PinMap_SPI_SCLK);
AnnaBridge 184:08ed48f1de7f 74 SPIName spi_ssel = (SPIName)pinmap_peripheral(ssel, PinMap_SPI_SSEL);
AnnaBridge 184:08ed48f1de7f 75 SPIName spi_data = (SPIName)pinmap_merge(spi_mosi, spi_miso);
AnnaBridge 184:08ed48f1de7f 76 SPIName spi_cntl = (SPIName)pinmap_merge(spi_sclk, spi_ssel);
AnnaBridge 184:08ed48f1de7f 77
AnnaBridge 184:08ed48f1de7f 78 obj->module = (SPIName)pinmap_merge(spi_data, spi_sclk);
AnnaBridge 184:08ed48f1de7f 79 obj->module = (SPIName)pinmap_merge(spi_data, spi_cntl);
AnnaBridge 184:08ed48f1de7f 80 MBED_ASSERT((int)obj->module!= NC);
AnnaBridge 184:08ed48f1de7f 81
AnnaBridge 184:08ed48f1de7f 82 // Identify SPI module to use
AnnaBridge 184:08ed48f1de7f 83 switch ((int)obj->module) {
AnnaBridge 184:08ed48f1de7f 84 case SPI_0:
AnnaBridge 184:08ed48f1de7f 85 obj->spi = TSB_SSP0;
AnnaBridge 184:08ed48f1de7f 86 break;
AnnaBridge 184:08ed48f1de7f 87 case SPI_1:
AnnaBridge 184:08ed48f1de7f 88 obj->spi = TSB_SSP1;
AnnaBridge 184:08ed48f1de7f 89 break;
AnnaBridge 184:08ed48f1de7f 90 case SPI_2:
AnnaBridge 184:08ed48f1de7f 91 obj->spi = TSB_SSP2;
AnnaBridge 184:08ed48f1de7f 92 break;
AnnaBridge 184:08ed48f1de7f 93 default:
AnnaBridge 184:08ed48f1de7f 94 obj->spi= NULL;
AnnaBridge 184:08ed48f1de7f 95 obj->module = (SPIName)NC;
AnnaBridge 184:08ed48f1de7f 96 error("Cannot found SPI module corresponding with input pins.");
AnnaBridge 184:08ed48f1de7f 97 break;
AnnaBridge 184:08ed48f1de7f 98 }
AnnaBridge 184:08ed48f1de7f 99
AnnaBridge 184:08ed48f1de7f 100 // pin out the spi pins
AnnaBridge 184:08ed48f1de7f 101 pinmap_pinout(mosi, PinMap_SPI_MOSI);
AnnaBridge 184:08ed48f1de7f 102 pinmap_pinout(miso, PinMap_SPI_MISO);
AnnaBridge 184:08ed48f1de7f 103 pinmap_pinout(sclk, PinMap_SPI_SCLK);
AnnaBridge 184:08ed48f1de7f 104
AnnaBridge 184:08ed48f1de7f 105 if (ssel != NC) {
AnnaBridge 184:08ed48f1de7f 106 pinmap_pinout(ssel, PinMap_SPI_SSEL);
AnnaBridge 184:08ed48f1de7f 107 }
AnnaBridge 184:08ed48f1de7f 108
AnnaBridge 184:08ed48f1de7f 109 // Declare Config
AnnaBridge 184:08ed48f1de7f 110 config.FrameFormat = SSP_FORMAT_SPI;
AnnaBridge 184:08ed48f1de7f 111
AnnaBridge 184:08ed48f1de7f 112 // bit_rate = Fsys / (clk_prescale * (clk_rate + 1))
AnnaBridge 184:08ed48f1de7f 113 config.PreScale = 48;
AnnaBridge 184:08ed48f1de7f 114 config.ClkRate = 0;
AnnaBridge 184:08ed48f1de7f 115
AnnaBridge 184:08ed48f1de7f 116 config.ClkPolarity = SSP_POLARITY_LOW;
AnnaBridge 184:08ed48f1de7f 117 config.ClkPhase = SSP_PHASE_FIRST_EDGE;
AnnaBridge 184:08ed48f1de7f 118 config.DataSize = 0x08;
AnnaBridge 184:08ed48f1de7f 119
AnnaBridge 184:08ed48f1de7f 120 obj->bits = config.DataSize;
AnnaBridge 184:08ed48f1de7f 121 config.Mode = SSP_MASTER;
AnnaBridge 184:08ed48f1de7f 122 SSP_Init(obj->spi, &config);
AnnaBridge 184:08ed48f1de7f 123
AnnaBridge 184:08ed48f1de7f 124 // Disable all interrupt
AnnaBridge 184:08ed48f1de7f 125
AnnaBridge 184:08ed48f1de7f 126 SSP_SetINTConfig(obj->spi, SSP_INTCFG_NONE);
AnnaBridge 184:08ed48f1de7f 127 SSP_Enable(obj->spi);
AnnaBridge 184:08ed48f1de7f 128 }
AnnaBridge 184:08ed48f1de7f 129
AnnaBridge 184:08ed48f1de7f 130 void spi_free(spi_t *obj)
AnnaBridge 184:08ed48f1de7f 131 {
AnnaBridge 184:08ed48f1de7f 132 SSP_Disable(obj->spi);
AnnaBridge 184:08ed48f1de7f 133 obj->spi = NULL;
AnnaBridge 184:08ed48f1de7f 134 obj->module = (SPIName)NC;
AnnaBridge 184:08ed48f1de7f 135 }
AnnaBridge 184:08ed48f1de7f 136
AnnaBridge 184:08ed48f1de7f 137 void spi_format(spi_t *obj, int bits, int mode, int slave)
AnnaBridge 184:08ed48f1de7f 138 {
AnnaBridge 184:08ed48f1de7f 139 TSB_SSP_TypeDef* spi;
AnnaBridge 184:08ed48f1de7f 140 MBED_ASSERT(slave == SSP_MASTER); // Master mode only
AnnaBridge 184:08ed48f1de7f 141
AnnaBridge 184:08ed48f1de7f 142 spi = obj->spi;
AnnaBridge 184:08ed48f1de7f 143
AnnaBridge 184:08ed48f1de7f 144 SSP_Disable(spi);
AnnaBridge 184:08ed48f1de7f 145
AnnaBridge 184:08ed48f1de7f 146 obj->bits = bits;
AnnaBridge 184:08ed48f1de7f 147
AnnaBridge 184:08ed48f1de7f 148 SSP_SetDataSize(spi, bits);
AnnaBridge 184:08ed48f1de7f 149 SSP_SetClkPolarity(spi, (SSP_ClkPolarity)(mode & 0x1));
AnnaBridge 184:08ed48f1de7f 150 SSP_SetClkPhase(spi, (SSP_ClkPhase)((mode >> 1) & 0x1));
AnnaBridge 184:08ed48f1de7f 151
AnnaBridge 184:08ed48f1de7f 152 SSP_Enable(spi);
AnnaBridge 184:08ed48f1de7f 153 }
AnnaBridge 184:08ed48f1de7f 154
AnnaBridge 184:08ed48f1de7f 155 void spi_frequency(spi_t *obj, int hz)
AnnaBridge 184:08ed48f1de7f 156 {
AnnaBridge 184:08ed48f1de7f 157 TSB_SSP_TypeDef* spi;
AnnaBridge 184:08ed48f1de7f 158
AnnaBridge 184:08ed48f1de7f 159 // Search Freq data
AnnaBridge 184:08ed48f1de7f 160 int fr_gear = 1;
AnnaBridge 184:08ed48f1de7f 161 int cur_hz = 1;
AnnaBridge 184:08ed48f1de7f 162 int32_t best_diff = TMPM46B_SPI_FMAX;
AnnaBridge 184:08ed48f1de7f 163 int best_cpsdvsr = 254;
AnnaBridge 184:08ed48f1de7f 164 int best_scr = 255;
AnnaBridge 184:08ed48f1de7f 165 int cur_cpsdvsr = 48;
AnnaBridge 184:08ed48f1de7f 166 int cur_scr = 0;
AnnaBridge 184:08ed48f1de7f 167 int32_t diff;
AnnaBridge 184:08ed48f1de7f 168
AnnaBridge 184:08ed48f1de7f 169 /* Assert Min frequency
AnnaBridge 184:08ed48f1de7f 170 Hz = Fsys / (CPSDVSR * (SCR + 1))
AnnaBridge 184:08ed48f1de7f 171 Domain value of CPSDVSR is an even number between 2 to 254
AnnaBridge 184:08ed48f1de7f 172 Domain value of SCR is a number between 0 to 255
AnnaBridge 184:08ed48f1de7f 173 Hz Min if CPSDVSR and SCR max (CPSDVSR = 254, SCR = 255)
AnnaBridge 184:08ed48f1de7f 174 */
AnnaBridge 184:08ed48f1de7f 175 MBED_ASSERT((SystemCoreClock / 65024) <= (uint32_t)hz);
AnnaBridge 184:08ed48f1de7f 176
AnnaBridge 184:08ed48f1de7f 177 if (obj->module == SPI_2) {
AnnaBridge 184:08ed48f1de7f 178 MBED_ASSERT(hz <= TMPM46B_SPI_2_FMAX);
AnnaBridge 184:08ed48f1de7f 179 } else {
AnnaBridge 184:08ed48f1de7f 180 MBED_ASSERT(hz <= TMPM46B_SPI_FMAX); // Default value of SPI_0, SPI_1, SPI_2
AnnaBridge 184:08ed48f1de7f 181 }
AnnaBridge 184:08ed48f1de7f 182
AnnaBridge 184:08ed48f1de7f 183 spi = obj->spi;
AnnaBridge 184:08ed48f1de7f 184 fr_gear = SystemCoreClock / hz;
AnnaBridge 184:08ed48f1de7f 185 if (fr_gear < 48) {
AnnaBridge 184:08ed48f1de7f 186 cur_cpsdvsr = fr_gear;
AnnaBridge 184:08ed48f1de7f 187 }
AnnaBridge 184:08ed48f1de7f 188 while (best_diff != 0 && cur_cpsdvsr <= 254) {
AnnaBridge 184:08ed48f1de7f 189 cur_scr = fr_gear / cur_cpsdvsr - 1;
AnnaBridge 184:08ed48f1de7f 190
AnnaBridge 184:08ed48f1de7f 191 if (cur_scr < 0) {
AnnaBridge 184:08ed48f1de7f 192 break;
AnnaBridge 184:08ed48f1de7f 193 }
AnnaBridge 184:08ed48f1de7f 194
AnnaBridge 184:08ed48f1de7f 195 for (; cur_scr < 256; ++cur_scr) {
AnnaBridge 184:08ed48f1de7f 196 cur_hz = SystemCoreClock / (cur_cpsdvsr * (1 + cur_scr));
AnnaBridge 184:08ed48f1de7f 197
AnnaBridge 184:08ed48f1de7f 198 diff = cur_hz - hz;
AnnaBridge 184:08ed48f1de7f 199
AnnaBridge 184:08ed48f1de7f 200 if (diff < 0) {
AnnaBridge 184:08ed48f1de7f 201 diff = -diff;
AnnaBridge 184:08ed48f1de7f 202 }
AnnaBridge 184:08ed48f1de7f 203
AnnaBridge 184:08ed48f1de7f 204 if (diff < best_diff) {
AnnaBridge 184:08ed48f1de7f 205 best_cpsdvsr = cur_cpsdvsr;
AnnaBridge 184:08ed48f1de7f 206 best_scr = cur_scr;
AnnaBridge 184:08ed48f1de7f 207 best_diff = diff;
AnnaBridge 184:08ed48f1de7f 208 } else if (diff >= best_diff) {
AnnaBridge 184:08ed48f1de7f 209 break;
AnnaBridge 184:08ed48f1de7f 210 }
AnnaBridge 184:08ed48f1de7f 211 }
AnnaBridge 184:08ed48f1de7f 212
AnnaBridge 184:08ed48f1de7f 213 cur_cpsdvsr += 2;
AnnaBridge 184:08ed48f1de7f 214 }
AnnaBridge 184:08ed48f1de7f 215
AnnaBridge 184:08ed48f1de7f 216 SSP_Disable(spi);
AnnaBridge 184:08ed48f1de7f 217 // Set bit rate of SPI
AnnaBridge 184:08ed48f1de7f 218 SSP_SetClkPreScale(spi, (uint8_t)best_cpsdvsr, (uint8_t)best_scr);
AnnaBridge 184:08ed48f1de7f 219 SSP_Enable(spi);
AnnaBridge 184:08ed48f1de7f 220 }
AnnaBridge 184:08ed48f1de7f 221
AnnaBridge 184:08ed48f1de7f 222 static void spi_clear_FIFOs(TSB_SSP_TypeDef *spi)
AnnaBridge 184:08ed48f1de7f 223 {
AnnaBridge 184:08ed48f1de7f 224 SSP_FIFOState tx_buf_state, rx_buf_state;
AnnaBridge 184:08ed48f1de7f 225
AnnaBridge 184:08ed48f1de7f 226 do {
AnnaBridge 184:08ed48f1de7f 227 while (SSP_GetWorkState(spi) == BUSY);
AnnaBridge 184:08ed48f1de7f 228
AnnaBridge 184:08ed48f1de7f 229 // Get data from receive FIFO
AnnaBridge 184:08ed48f1de7f 230 SSP_GetRxData(spi);
AnnaBridge 184:08ed48f1de7f 231
AnnaBridge 184:08ed48f1de7f 232 // Check receive FIFO
AnnaBridge 184:08ed48f1de7f 233 rx_buf_state = SSP_GetFIFOState(spi, SSP_RX);
AnnaBridge 184:08ed48f1de7f 234
AnnaBridge 184:08ed48f1de7f 235 // Check transmit FIFO
AnnaBridge 184:08ed48f1de7f 236 tx_buf_state = SSP_GetFIFOState(spi, SSP_TX);
AnnaBridge 184:08ed48f1de7f 237 } while (rx_buf_state != SSP_FIFO_EMPTY || tx_buf_state != SSP_FIFO_EMPTY);
AnnaBridge 184:08ed48f1de7f 238 }
AnnaBridge 184:08ed48f1de7f 239
AnnaBridge 184:08ed48f1de7f 240 int spi_master_write(spi_t *obj, int value)
AnnaBridge 184:08ed48f1de7f 241 {
AnnaBridge 184:08ed48f1de7f 242 TSB_SSP_TypeDef* spi;
AnnaBridge 184:08ed48f1de7f 243
AnnaBridge 184:08ed48f1de7f 244 spi = obj->spi;
AnnaBridge 184:08ed48f1de7f 245 // Clear all data in transmit FIFO and receive FIFO
AnnaBridge 184:08ed48f1de7f 246 spi_clear_FIFOs(spi);
AnnaBridge 184:08ed48f1de7f 247 // Transmit data
AnnaBridge 184:08ed48f1de7f 248 SSP_SetTxData(spi, value);
AnnaBridge 184:08ed48f1de7f 249 // Wait for transmitting
AnnaBridge 184:08ed48f1de7f 250 while (SSP_GetWorkState(spi) == BUSY);
AnnaBridge 184:08ed48f1de7f 251 // Read received data
AnnaBridge 184:08ed48f1de7f 252 value = SSP_GetRxData(spi);
AnnaBridge 184:08ed48f1de7f 253
AnnaBridge 184:08ed48f1de7f 254 return value;
AnnaBridge 184:08ed48f1de7f 255 }
AnnaBridge 184:08ed48f1de7f 256
AnnaBridge 184:08ed48f1de7f 257 int spi_master_block_write(spi_t *obj, const char *tx_buffer, int tx_length,
AnnaBridge 184:08ed48f1de7f 258 char *rx_buffer, int rx_length, char write_fill)
AnnaBridge 184:08ed48f1de7f 259 {
AnnaBridge 184:08ed48f1de7f 260 int total = (tx_length > rx_length) ? tx_length : rx_length;
AnnaBridge 184:08ed48f1de7f 261
AnnaBridge 184:08ed48f1de7f 262 for (int i = 0; i < total; i++) {
AnnaBridge 184:08ed48f1de7f 263 char out = (i < tx_length) ? tx_buffer[i] : write_fill;
AnnaBridge 184:08ed48f1de7f 264 char in = spi_master_write(obj, out);
AnnaBridge 184:08ed48f1de7f 265 if (i < rx_length) {
AnnaBridge 184:08ed48f1de7f 266 rx_buffer[i] = in;
AnnaBridge 184:08ed48f1de7f 267 }
AnnaBridge 184:08ed48f1de7f 268 }
AnnaBridge 184:08ed48f1de7f 269
AnnaBridge 184:08ed48f1de7f 270 return total;
AnnaBridge 184:08ed48f1de7f 271 }
AnnaBridge 184:08ed48f1de7f 272
AnnaBridge 184:08ed48f1de7f 273 int spi_busy(spi_t *obj)
AnnaBridge 184:08ed48f1de7f 274 {
AnnaBridge 184:08ed48f1de7f 275 WorkState state;
AnnaBridge 184:08ed48f1de7f 276 state = SSP_GetWorkState(obj->spi);
AnnaBridge 184:08ed48f1de7f 277 return (state == BUSY);
AnnaBridge 184:08ed48f1de7f 278 }
AnnaBridge 184:08ed48f1de7f 279
AnnaBridge 184:08ed48f1de7f 280 uint8_t spi_get_module(spi_t *obj)
AnnaBridge 184:08ed48f1de7f 281 {
AnnaBridge 184:08ed48f1de7f 282 return (uint8_t)(obj->module);
AnnaBridge 184:08ed48f1de7f 283 }