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
|
/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* Based on Sprinter and grbl.
* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
#if defined(ARDUINO_ARCH_STM32) && !defined(STM32GENERIC)
#include "MarlinSPI.h"
static void spi_init(spi_t *obj, uint32_t speed, spi_mode_e mode, uint8_t msb, uint32_t dataSize) {
spi_init(obj, speed, mode, msb);
// spi_init set 8bit always
// TODO: copy the code from spi_init and handle data size, to avoid double init always!!
if (dataSize != SPI_DATASIZE_8BIT) {
obj->handle.Init.DataSize = dataSize;
HAL_SPI_Init(&obj->handle);
__HAL_SPI_ENABLE(&obj->handle);
}
}
void MarlinSPI::setClockDivider(uint8_t _div) {
_speed = spi_getClkFreq(&_spi);// / _div;
_clockDivider = _div;
}
void MarlinSPI::begin(void) {
//TODO: only call spi_init if any parameter changed!!
spi_init(&_spi, _speed, _dataMode, _bitOrder, _dataSize);
}
void MarlinSPI::setupDma(SPI_HandleTypeDef &_spiHandle, DMA_HandleTypeDef &_dmaHandle, uint32_t direction, bool minc) {
_dmaHandle.Init.Direction = direction;
_dmaHandle.Init.PeriphInc = DMA_PINC_DISABLE;
_dmaHandle.Init.Mode = DMA_NORMAL;
_dmaHandle.Init.Priority = DMA_PRIORITY_LOW;
_dmaHandle.Init.MemInc = minc ? DMA_MINC_ENABLE : DMA_MINC_DISABLE;
if (_dataSize == DATA_SIZE_8BIT) {
_dmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_BYTE;
_dmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_BYTE;
}
else {
_dmaHandle.Init.PeriphDataAlignment = DMA_PDATAALIGN_HALFWORD;
_dmaHandle.Init.MemDataAlignment = DMA_MDATAALIGN_HALFWORD;
}
#ifdef STM32F4xx
_dmaHandle.Init.FIFOMode = DMA_FIFOMODE_DISABLE;
#endif
// start DMA hardware
// TODO: check if hardware is already enabled
#ifdef SPI1_BASE
if (_spiHandle.Instance == SPI1) {
#ifdef STM32F1xx
__HAL_RCC_DMA1_CLK_ENABLE();
_dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Channel3 : DMA1_Channel2;
#elif defined(STM32F4xx)
__HAL_RCC_DMA2_CLK_ENABLE();
_dmaHandle.Init.Channel = DMA_CHANNEL_3;
_dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA2_Stream3 : DMA2_Stream0;
#endif
}
#endif
#ifdef SPI2_BASE
if (_spiHandle.Instance == SPI2) {
#ifdef STM32F1xx
__HAL_RCC_DMA1_CLK_ENABLE();
_dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Channel5 : DMA1_Channel4;
#elif defined(STM32F4xx)
__HAL_RCC_DMA1_CLK_ENABLE();
_dmaHandle.Init.Channel = DMA_CHANNEL_0;
_dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Stream4 : DMA1_Stream3;
#endif
}
#endif
#ifdef SPI3_BASE
if (_spiHandle.Instance == SPI3) {
#ifdef STM32F1xx
__HAL_RCC_DMA2_CLK_ENABLE();
_dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA2_Channel2 : DMA2_Channel1;
#elif defined(STM32F4xx)
__HAL_RCC_DMA1_CLK_ENABLE();
_dmaHandle.Init.Channel = DMA_CHANNEL_0;
_dmaHandle.Instance = (direction == DMA_MEMORY_TO_PERIPH) ? DMA1_Stream5 : DMA1_Stream2;
#endif
}
#endif
HAL_DMA_Init(&_dmaHandle);
}
byte MarlinSPI::transfer(uint8_t _data) {
uint8_t rxData = 0xFF;
HAL_SPI_TransmitReceive(&_spi.handle, &_data, &rxData, 1, HAL_MAX_DELAY);
return rxData;
}
uint8_t MarlinSPI::dmaTransfer(const void *transmitBuf, void *receiveBuf, uint16_t length) {
const uint8_t ff = 0xFF;
//if ((hspi->Instance->CR1 & SPI_CR1_SPE) != SPI_CR1_SPE) //only enable if disabled
__HAL_SPI_ENABLE(&_spi.handle);
if (receiveBuf) {
setupDma(_spi.handle, _dmaRx, DMA_PERIPH_TO_MEMORY, true);
HAL_DMA_Start(&_dmaRx, (uint32_t)&(_spi.handle.Instance->DR), (uint32_t)receiveBuf, length);
SET_BIT(_spi.handle.Instance->CR2, SPI_CR2_RXDMAEN); /* Enable Rx DMA Request */
}
// check for 2 lines transfer
bool mincTransmit = true;
if (transmitBuf == nullptr && _spi.handle.Init.Direction == SPI_DIRECTION_2LINES && _spi.handle.Init.Mode == SPI_MODE_MASTER) {
transmitBuf = &ff;
mincTransmit = false;
}
if (transmitBuf) {
setupDma(_spi.handle, _dmaTx, DMA_MEMORY_TO_PERIPH, mincTransmit);
HAL_DMA_Start(&_dmaTx, (uint32_t)transmitBuf, (uint32_t)&(_spi.handle.Instance->DR), length);
SET_BIT(_spi.handle.Instance->CR2, SPI_CR2_TXDMAEN); /* Enable Tx DMA Request */
}
if (transmitBuf) {
HAL_DMA_PollForTransfer(&_dmaTx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
HAL_DMA_Abort(&_dmaTx);
HAL_DMA_DeInit(&_dmaTx);
}
// while ((_spi.handle.Instance->SR & SPI_FLAG_RXNE) != SPI_FLAG_RXNE) {}
if (receiveBuf) {
HAL_DMA_PollForTransfer(&_dmaRx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
HAL_DMA_Abort(&_dmaRx);
HAL_DMA_DeInit(&_dmaRx);
}
return 1;
}
uint8_t MarlinSPI::dmaSend(const void * transmitBuf, uint16_t length, bool minc) {
setupDma(_spi.handle, _dmaTx, DMA_MEMORY_TO_PERIPH, minc);
HAL_DMA_Start(&_dmaTx, (uint32_t)transmitBuf, (uint32_t)&(_spi.handle.Instance->DR), length);
__HAL_SPI_ENABLE(&_spi.handle);
SET_BIT(_spi.handle.Instance->CR2, SPI_CR2_TXDMAEN); /* Enable Tx DMA Request */
HAL_DMA_PollForTransfer(&_dmaTx, HAL_DMA_FULL_TRANSFER, HAL_MAX_DELAY);
HAL_DMA_Abort(&_dmaTx);
// DeInit objects
HAL_DMA_DeInit(&_dmaTx);
return 1;
}
#endif // ARDUINO_ARCH_STM32 && !STM32GENERIC
|
