blob: ad16e642c7c60934fe81427042f3f6965057ab60 (
plain)
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
|
/* Auto-generated config file hpl_sercom_config.h */
#ifndef HPL_SERCOM_CONFIG_H
#define HPL_SERCOM_CONFIG_H
// <<< Use Configuration Wizard in Context Menu >>>
#include <peripheral_clk_config.h>
#ifndef SERCOM_I2CM_CTRLA_MODE_I2C_MASTER
#define SERCOM_I2CM_CTRLA_MODE_I2C_MASTER (5 << 2)
#endif
#ifndef CONF_SERCOM_1_I2CM_ENABLE
#define CONF_SERCOM_1_I2CM_ENABLE 1
#endif
// <h> Basic
// <o> I2C Bus clock speed (Hz) <1-400000>
// <i> I2C Bus clock (SCL) speed measured in Hz
// <id> i2c_master_baud_rate
#ifndef CONF_SERCOM_1_I2CM_BAUD
#define CONF_SERCOM_1_I2CM_BAUD 100000
#endif
// </h>
// <e> Advanced
// <id> i2c_master_advanced
#ifndef CONF_SERCOM_1_I2CM_ADVANCED_CONFIG
#define CONF_SERCOM_1_I2CM_ADVANCED_CONFIG 0
#endif
// <o> TRise (ns) <0-300>
// <i> Determined by the bus impedance, check electric characteristics in the datasheet
// <i> Standard Fast Mode: typical 215ns, max 300ns
// <i> Fast Mode +: typical 60ns, max 100ns
// <i> High Speed Mode: typical 20ns, max 40ns
// <id> i2c_master_arch_trise
#ifndef CONF_SERCOM_1_I2CM_TRISE
#define CONF_SERCOM_1_I2CM_TRISE 215
#endif
// <q> Master SCL Low Extended Time-Out (MEXTTOEN)
// <i> This enables the master SCL low extend time-out
// <id> i2c_master_arch_mexttoen
#ifndef CONF_SERCOM_1_I2CM_MEXTTOEN
#define CONF_SERCOM_1_I2CM_MEXTTOEN 0
#endif
// <q> Slave SCL Low Extend Time-Out (SEXTTOEN)
// <i> Enables the slave SCL low extend time-out. If SCL is cumulatively held low for greater than 25ms from the initial START to a STOP, the slave will release its clock hold if enabled and reset the internal state machine
// <id> i2c_master_arch_sexttoen
#ifndef CONF_SERCOM_1_I2CM_SEXTTOEN
#define CONF_SERCOM_1_I2CM_SEXTTOEN 0
#endif
// <q> SCL Low Time-Out (LOWTOUT)
// <i> Enables SCL low time-out. If SCL is held low for 25ms-35ms, the master will release it's clock hold
// <id> i2c_master_arch_lowtout
#ifndef CONF_SERCOM_1_I2CM_LOWTOUT
#define CONF_SERCOM_1_I2CM_LOWTOUT 0
#endif
// <o> Inactive Time-Out (INACTOUT)
// <0x0=>Disabled
// <0x1=>5-6 SCL cycle time-out(50-60us)
// <0x2=>10-11 SCL cycle time-out(100-110us)
// <0x3=>20-21 SCL cycle time-out(200-210us)
// <i> Defines if inactivity time-out should be enabled, and how long the time-out should be
// <id> i2c_master_arch_inactout
#ifndef CONF_SERCOM_1_I2CM_INACTOUT
#define CONF_SERCOM_1_I2CM_INACTOUT 0x0
#endif
// <o> SDA Hold Time (SDAHOLD)
// <0=>Disabled
// <1=>50-100ns hold time
// <2=>300-600ns hold time
// <3=>400-800ns hold time
// <i> Defines the SDA hold time with respect to the negative edge of SCL
// <id> i2c_master_arch_sdahold
#ifndef CONF_SERCOM_1_I2CM_SDAHOLD
#define CONF_SERCOM_1_I2CM_SDAHOLD 0x2
#endif
// <q> Run in stand-by
// <i> Determine if the module shall run in standby sleep mode
// <id> i2c_master_arch_runstdby
#ifndef CONF_SERCOM_1_I2CM_RUNSTDBY
#define CONF_SERCOM_1_I2CM_RUNSTDBY 0
#endif
// <o> Debug Stop Mode
// <i> Behavior of the baud-rate generator when CPU is halted by external debugger.
// <0=>Keep running
// <1=>Halt
// <id> i2c_master_arch_dbgstop
#ifndef CONF_SERCOM_1_I2CM_DEBUG_STOP_MODE
#define CONF_SERCOM_1_I2CM_DEBUG_STOP_MODE 0
#endif
// </e>
#ifndef CONF_SERCOM_1_I2CM_SPEED
#define CONF_SERCOM_1_I2CM_SPEED 0x00 // Speed: Standard/Fast mode
#endif
#if CONF_SERCOM_1_I2CM_TRISE < 215 || CONF_SERCOM_1_I2CM_TRISE > 300
#warning Bad I2C Rise time for Standard/Fast mode, reset to 215ns
#undef CONF_SERCOM_1_I2CM_TRISE
#define CONF_SERCOM_1_I2CM_TRISE 215U
#endif
// gclk_freq - (i2c_scl_freq * 10) - (gclk_freq * i2c_scl_freq * Trise)
// BAUD + BAUDLOW = --------------------------------------------------------------------
// i2c_scl_freq
// BAUD: register value low [7:0]
// BAUDLOW: register value high [15:8], only used for odd BAUD + BAUDLOW
#define CONF_SERCOM_1_I2CM_BAUD_BAUDLOW \
(((CONF_GCLK_SERCOM1_CORE_FREQUENCY - (CONF_SERCOM_1_I2CM_BAUD * 10U) \
- (CONF_SERCOM_1_I2CM_TRISE * (CONF_SERCOM_1_I2CM_BAUD / 100U) * (CONF_GCLK_SERCOM1_CORE_FREQUENCY / 10000U) \
/ 1000U)) \
* 10U \
+ 5U) \
/ (CONF_SERCOM_1_I2CM_BAUD * 10U))
#ifndef CONF_SERCOM_1_I2CM_BAUD_RATE
#if CONF_SERCOM_1_I2CM_BAUD_BAUDLOW > (0xFF * 2)
#warning Requested I2C baudrate too low, please check
#define CONF_SERCOM_1_I2CM_BAUD_RATE 0xFF
#elif CONF_SERCOM_1_I2CM_BAUD_BAUDLOW <= 1
#warning Requested I2C baudrate too high, please check
#define CONF_SERCOM_1_I2CM_BAUD_RATE 1
#else
#define CONF_SERCOM_1_I2CM_BAUD_RATE \
((CONF_SERCOM_1_I2CM_BAUD_BAUDLOW & 0x1) \
? (CONF_SERCOM_1_I2CM_BAUD_BAUDLOW / 2) + ((CONF_SERCOM_1_I2CM_BAUD_BAUDLOW / 2 + 1) << 8) \
: (CONF_SERCOM_1_I2CM_BAUD_BAUDLOW / 2))
#endif
#endif
// <<< end of configuration section >>>
#endif // HPL_SERCOM_CONFIG_H
|
