1 | #ifndef _SERCOM_CLASS_
|
---|
2 | #define _SERCOM_CLASS_
|
---|
3 |
|
---|
4 | #include "sam.h"
|
---|
5 |
|
---|
6 | #define SERCOM_FREQ_REF 48000000
|
---|
7 |
|
---|
8 | typedef enum
|
---|
9 | {
|
---|
10 | UART_EXT_CLOCK = 0,
|
---|
11 | UART_INT_CLOCK = 0x1u
|
---|
12 | } SercomUartMode;
|
---|
13 |
|
---|
14 | typedef enum
|
---|
15 | {
|
---|
16 | SPI_SLAVE_OPERATION = 0x2u,
|
---|
17 | SPI_MASTER_OPERATION = 0x3u
|
---|
18 | } SercomSpiMode;
|
---|
19 |
|
---|
20 | typedef enum
|
---|
21 | {
|
---|
22 | I2C_SLAVE_OPERATION = 0x4u,
|
---|
23 | I2C_MASTER_OPERATION = 0x5u
|
---|
24 | } SercomI2CMode;
|
---|
25 |
|
---|
26 | typedef enum
|
---|
27 | {
|
---|
28 | SERCOM_EVEN_PARITY = 0,
|
---|
29 | SERCOM_ODD_PARITY,
|
---|
30 | SERCOM_NO_PARITY
|
---|
31 | } SercomParityMode;
|
---|
32 |
|
---|
33 | typedef enum
|
---|
34 | {
|
---|
35 | SERCOM_STOP_BIT_1 = 0,
|
---|
36 | SERCOM_STOP_BITS_2
|
---|
37 | } SercomNumberStopBit;
|
---|
38 |
|
---|
39 | typedef enum
|
---|
40 | {
|
---|
41 | MSB_FIRST = 0,
|
---|
42 | LSB_FIRST
|
---|
43 | } SercomDataOrder;
|
---|
44 |
|
---|
45 | typedef enum
|
---|
46 | {
|
---|
47 | UART_CHAR_SIZE_8_BITS = 0,
|
---|
48 | UART_CHAR_SIZE_9_BITS,
|
---|
49 | UART_CHAR_SIZE_5_BITS = 0x5u,
|
---|
50 | UART_CHAR_SIZE_6_BITS,
|
---|
51 | UART_CHAR_SIZE_7_BITS
|
---|
52 | } SercomUartCharSize;
|
---|
53 |
|
---|
54 | typedef enum
|
---|
55 | {
|
---|
56 | SERCOM_RX_PAD_0 = 0,
|
---|
57 | SERCOM_RX_PAD_1,
|
---|
58 | SERCOM_RX_PAD_2,
|
---|
59 | SERCOM_RX_PAD_3
|
---|
60 | } SercomRXPad;
|
---|
61 |
|
---|
62 | typedef enum
|
---|
63 | {
|
---|
64 | UART_TX_PAD_0 = 0x0ul, //Only for UART
|
---|
65 | UART_TX_PAD_2 = 0x1ul, //Only for UART
|
---|
66 | } SercomUartTXPad;
|
---|
67 |
|
---|
68 | typedef enum
|
---|
69 | {
|
---|
70 | SAMPLE_RATE_x16 = 0, //Arithmetic
|
---|
71 | SAMPLE_RATE_x8 = 0x2, //Arithmetic
|
---|
72 | SAMPLE_RATE_x3 = 0x3 //Arithmetic
|
---|
73 | } SercomUartSampleRate;
|
---|
74 |
|
---|
75 | typedef enum
|
---|
76 | {
|
---|
77 | SERCOM_SPI_MODE_0 = 0, // CPOL : 0 | CPHA : 0
|
---|
78 | SERCOM_SPI_MODE_1, // CPOL : 0 | CPHA : 1
|
---|
79 | SERCOM_SPI_MODE_2, // CPOL : 1 | CPHA : 0
|
---|
80 | SERCOM_SPI_MODE_3 // CPOL : 1 | CPHA : 1
|
---|
81 | } SercomSpiClockMode;
|
---|
82 |
|
---|
83 | typedef enum
|
---|
84 | {
|
---|
85 | SPI_PAD_0_SCK_1 = 0,
|
---|
86 | SPI_PAD_2_SCK_3,
|
---|
87 | SPI_PAD_3_SCK_1,
|
---|
88 | SPI_PAD_0_SCK_3
|
---|
89 | } SercomSpiTXPad;
|
---|
90 |
|
---|
91 | typedef enum
|
---|
92 | {
|
---|
93 | SPI_CHAR_SIZE_8_BITS = 0x0ul,
|
---|
94 | SPI_CHAR_SIZE_9_BITS
|
---|
95 | } SercomSpiCharSize;
|
---|
96 |
|
---|
97 | typedef enum
|
---|
98 | {
|
---|
99 | WIRE_UNKNOWN_STATE = 0x0ul,
|
---|
100 | WIRE_IDLE_STATE,
|
---|
101 | WIRE_OWNER_STATE,
|
---|
102 | WIRE_BUSY_STATE
|
---|
103 | } SercomWireBusState;
|
---|
104 |
|
---|
105 | typedef enum
|
---|
106 | {
|
---|
107 | WIRE_WRITE_FLAG = 0x0ul,
|
---|
108 | WIRE_READ_FLAG
|
---|
109 | } SercomWireReadWriteFlag;
|
---|
110 |
|
---|
111 | typedef enum
|
---|
112 | {
|
---|
113 | WIRE_MASTER_ACT_NO_ACTION = 0,
|
---|
114 | WIRE_MASTER_ACT_REPEAT_START,
|
---|
115 | WIRE_MASTER_ACT_READ,
|
---|
116 | WIRE_MASTER_ACT_STOP
|
---|
117 | } SercomMasterCommandWire;
|
---|
118 |
|
---|
119 | typedef enum
|
---|
120 | {
|
---|
121 | WIRE_MASTER_ACK_ACTION = 0,
|
---|
122 | WIRE_MASTER_NACK_ACTION
|
---|
123 | } SercomMasterAckActionWire;
|
---|
124 |
|
---|
125 | class SERCOM
|
---|
126 | {
|
---|
127 | public:
|
---|
128 | SERCOM(Sercom* s) ;
|
---|
129 |
|
---|
130 | /* ========== UART ========== */
|
---|
131 | void initUART(SercomUartMode mode, SercomUartSampleRate sampleRate, uint32_t baudrate=0) ;
|
---|
132 | void initFrame(SercomUartCharSize charSize, SercomDataOrder dataOrder, SercomParityMode parityMode, SercomNumberStopBit nbStopBits) ;
|
---|
133 | void initPads(SercomUartTXPad txPad, SercomRXPad rxPad) ;
|
---|
134 |
|
---|
135 | void resetUART( void ) ;
|
---|
136 | void enableUART( void ) ;
|
---|
137 | void flushUART( void ) ;
|
---|
138 | void clearStatusUART( void ) ;
|
---|
139 | bool availableDataUART( void ) ;
|
---|
140 | bool isBufferOverflowErrorUART( void ) ;
|
---|
141 | bool isFrameErrorUART( void ) ;
|
---|
142 | bool isParityErrorUART( void ) ;
|
---|
143 | bool isDataRegisterEmptyUART( void ) ;
|
---|
144 | uint8_t readDataUART( void ) ;
|
---|
145 | int writeDataUART(uint8_t data) ;
|
---|
146 |
|
---|
147 | /* ========== SPI ========== */
|
---|
148 | void initSPI(SercomSpiTXPad mosi, SercomRXPad miso, SercomSpiCharSize charSize, SercomDataOrder dataOrder) ;
|
---|
149 | void initSPIClock(SercomSpiClockMode clockMode, uint32_t baudrate) ;
|
---|
150 |
|
---|
151 | void resetSPI( void ) ;
|
---|
152 | void enableSPI( void ) ;
|
---|
153 | void disableSPI( void ) ;
|
---|
154 | void setDataOrderSPI(SercomDataOrder dataOrder) ;
|
---|
155 | void setBaudrateSPI(uint8_t divider) ;
|
---|
156 | void setClockModeSPI(SercomSpiClockMode clockMode) ;
|
---|
157 | void writeDataSPI(uint8_t data) ;
|
---|
158 | uint16_t readDataSPI( void ) ;
|
---|
159 | bool isBufferOverflowErrorSPI( void ) ;
|
---|
160 | bool isDataRegisterEmptySPI( void ) ;
|
---|
161 | bool isTransmitCompleteSPI( void ) ;
|
---|
162 | bool isReceiveCompleteSPI( void ) ;
|
---|
163 |
|
---|
164 | /* ========== WIRE ========== */
|
---|
165 | void initSlaveWIRE(uint8_t address) ;
|
---|
166 | void initMasterWIRE(uint32_t baudrate) ;
|
---|
167 |
|
---|
168 | void resetWIRE( void ) ;
|
---|
169 | void enableWIRE( void ) ;
|
---|
170 | void disableWIRE( void );
|
---|
171 | void prepareNackBitWIRE( void ) ;
|
---|
172 | void prepareAckBitWIRE( void ) ;
|
---|
173 | void prepareCommandBitsWire(SercomMasterCommandWire cmd);
|
---|
174 | bool startTransmissionWIRE(uint8_t address, SercomWireReadWriteFlag flag) ;
|
---|
175 | bool sendDataMasterWIRE(uint8_t data) ;
|
---|
176 | bool sendDataSlaveWIRE(uint8_t data) ;
|
---|
177 | bool isMasterWIRE( void ) ;
|
---|
178 | bool isSlaveWIRE( void ) ;
|
---|
179 | bool isBusIdleWIRE( void ) ;
|
---|
180 | bool isDataReadyWIRE( void ) ;
|
---|
181 | bool isStopDetectedWIRE( void ) ;
|
---|
182 | bool isRestartDetectedWIRE( void ) ;
|
---|
183 | bool isAddressMatch( void ) ;
|
---|
184 | bool isMasterReadOperationWIRE( void ) ;
|
---|
185 | bool isRXNackReceivedWIRE( void ) ;
|
---|
186 | int availableWIRE( void ) ;
|
---|
187 | uint8_t readDataWIRE( void ) ;
|
---|
188 |
|
---|
189 | private:
|
---|
190 | Sercom* sercom;
|
---|
191 | uint8_t calculateBaudrateSynchronous(uint32_t baudrate) ;
|
---|
192 | uint32_t division(uint32_t dividend, uint32_t divisor) ;
|
---|
193 | void initClockNVIC( void ) ;
|
---|
194 | };
|
---|
195 |
|
---|
196 | #endif
|
---|