1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
|
/**
* SPI0 Generated Driver File
*
* @file spi0.c
*
* @ingroup spi0
*
* @brief This file contains the driver code for the SPI0 module.
*
* @version SPI0 Driver Version 3.1.0
*
* @version SPI0 Package Version 5.1.0
*/
/*
© [2025] Microchip Technology Inc. and its subsidiaries.
Subject to your compliance with these terms, you may use Microchip
software and any derivatives exclusively with Microchip products.
You are responsible for complying with 3rd party license terms
applicable to your use of 3rd party software (including open source
software) that may accompany Microchip software. SOFTWARE IS ?AS IS.?
NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS
SOFTWARE, INCLUDING ANY IMPLIED WARRANTIES OF NON-INFRINGEMENT,
MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE,
INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY
KIND WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF
MICROCHIP HAS BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE
FORESEEABLE. TO THE FULLEST EXTENT ALLOWED BY LAW, MICROCHIP?S
TOTAL LIABILITY ON ALL CLAIMS RELATED TO THE SOFTWARE WILL NOT
EXCEED AMOUNT OF FEES, IF ANY, YOU PAID DIRECTLY TO MICROCHIP FOR
THIS SOFTWARE.
*/
#include "../spi0.h"
#include "../spi_polling_types.h"
const struct SPI_INTERFACE SPI0_s =
{
.Initialize = SPI0_Initialize,
.Deinitialize = SPI0_Deinitialize,
.Open = SPI0_Open,
.Close = SPI0_Close,
.Transfer = SPI0_Transfer,
.BufferExchange = SPI0_BufferExchange,
.BufferWrite = SPI0_BufferWrite,
.BufferRead = SPI0_BufferRead,
.ByteExchange = SPI0_ByteExchange,
.ByteWrite = SPI0_ByteWrite,
.ByteRead = SPI0_ByteRead,
.IsTxReady = SPI0_IsTxReady,
.IsRxReady = SPI0_IsRxReady,
.RxCompleteCallbackRegister = NULL,
.TxCompleteCallbackRegister = NULL
};
static const spi_configuration_t spi0_configuration[] =
{
{ 0x34, 0xC4 }
};
void SPI0_Initialize(void)
{
SPI0.CTRLA &= ~SPI_ENABLE_bm;
SPI0.CTRLA = (1 << SPI_CLK2X_bp) /* CLK2X (enabled) */
|(0 << SPI_DORD_bp) /* DORD (disabled) */
|(0 << SPI_ENABLE_bp) /* ENABLE (disabled) */
|(1 << SPI_MASTER_bp) /* MASTER (enabled) */
|(SPI_PRESC_DIV64_gc); /* PRESC (DIV64) */
SPI0.CTRLB = (1 << SPI_BUFEN_bp) /* BUFEN (enabled) */
|(1 << SPI_BUFWR_bp) /* BUFWR (enabled) */
|(SPI_MODE_0_gc) /* MODE (0) */
|(1 << SPI_SSD_bp); /* SSD (enabled) */
}
void SPI0_Deinitialize(void)
{
SPI0.CTRLA = 0x0;
SPI0.CTRLB = 0x0;
SPI0.INTCTRL = 0x0;
}
bool SPI0_Open(uint8_t spiConfigIndex)
{
bool returnValue = false;
if (0 == (SPI0.CTRLA & SPI_ENABLE_bm))
{
SPI0.CTRLB = spi0_configuration[spiConfigIndex].ctrlb;
SPI0.CTRLA = spi0_configuration[spiConfigIndex].ctrla;
SPI0.CTRLA |= SPI_ENABLE_bm;
returnValue = true;
}
else
{
returnValue = false;
}
return returnValue;
}
void SPI0_Close(void)
{
SPI0.CTRLA &= ~SPI_ENABLE_bm;
}
uint8_t SPI0_ByteExchange(uint8_t byteData)
{
uint8_t readData = 0;
SPI0.DATA = byteData;
while (0 == (SPI0.INTFLAGS & SPI_RXCIF_bm))
{
; // Wait until ongoing SPI transfer is completed
}
readData = SPI0.DATA;
return readData;
}
void SPI0_ByteWrite(uint8_t byteData)
{
SPI0.DATA = byteData;
}
uint8_t SPI0_ByteRead(void)
{
return SPI0.DATA;
}
void SPI0_Transfer(const void *txBuffer, void *rxBuffer, size_t bufferSize)
{
const uint8_t *bufferTransmit = (const uint8_t *)txBuffer;
uint8_t *bufferReceive = (uint8_t *)rxBuffer;
size_t bufferInputSize = bufferSize;
while(0U != bufferInputSize)
{
SPI0.DATA = *bufferTransmit;
while (0 == (SPI0.INTFLAGS & SPI_RXCIF_bm))
{
; // Wait until ongoing SPI transfer is completed
}
*bufferReceive = SPI0.DATA;
bufferTransmit++;
bufferReceive++;
bufferInputSize--;
}
}
void SPI0_BufferExchange(void *bufferData, size_t bufferSize)
{
uint8_t *buffer = (uint8_t *)bufferData;
size_t bufferInputSize = bufferSize;
while(0U != bufferInputSize)
{
SPI0.DATA = *buffer;
while (0 == (SPI0.INTFLAGS & SPI_RXCIF_bm))
{
; // Wait until ongoing SPI transfer is completed
}
*buffer = SPI0.DATA;
buffer++;
bufferInputSize--;
}
}
void SPI0_BufferWrite(void *bufferData, size_t bufferSize)
{
uint8_t *buffer = (uint8_t *)bufferData;
uint8_t readData = 0;
size_t bufferInputSize = bufferSize;
while(0U != bufferInputSize)
{
SPI0.DATA = *buffer;
while(0 == (SPI0.INTFLAGS & SPI_RXCIF_bm))
{
; // Wait until ongoing SPI transfer is completed
}
readData = SPI0.DATA;
(void) readData;
buffer++;
bufferInputSize--;
}
}
void SPI0_BufferRead(void *bufferData, size_t bufferSize)
{
uint8_t *buffer = (uint8_t *)bufferData;
size_t bufferInputSize = bufferSize;
while(0U != bufferInputSize)
{
SPI0.DATA = 0;
while (0 == (SPI0.INTFLAGS & SPI_RXCIF_bm))
{
; // Wait until ongoing SPI transfer is completed
}
*buffer = SPI0.DATA;
buffer++;
bufferInputSize--;
}
}
bool SPI0_IsTxReady(void)
{
bool returnValue = false;
if(0 != (SPI0.CTRLA & SPI_ENABLE_bm))
{
if(0 != (SPI0.INTFLAGS & SPI_DREIF_bm))
{
returnValue = true;
}
else
{
returnValue = false;
}
}
else
{
returnValue = false;
}
return returnValue;
}
bool SPI0_IsRxReady(void)
{
bool returnValue = false;
if(0 != (SPI0.CTRLA & SPI_ENABLE_bm))
{
if(0 != (SPI0.INTFLAGS & SPI_RXCIF_bm))
{
returnValue = true;
}
else
{
returnValue = false;
}
}
else
{
returnValue = false;
}
return returnValue;
}
|
