mbed library sources
Fork of mbed-src by
targets/hal/TARGET_Atmel/TARGET_SAM21/drivers/system/clock/gclk.h@592:a274ee790e56, 2015-07-17 (annotated)
- Committer:
- mbed_official
- Date:
- Fri Jul 17 09:15:10 2015 +0100
- Revision:
- 592:a274ee790e56
- Parent:
- 579:53297373a894
Synchronized with git revision e7144f83a8d75df80c4877936b6ffe552b0be9e6
Full URL: https://github.com/mbedmicro/mbed/commit/e7144f83a8d75df80c4877936b6ffe552b0be9e6/
More API implementation for SAMR21
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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mbed_official | 579:53297373a894 | 1 | #ifndef SYSTEM_CLOCK_GCLK_H_INCLUDED |
mbed_official | 579:53297373a894 | 2 | #define SYSTEM_CLOCK_GCLK_H_INCLUDED |
mbed_official | 579:53297373a894 | 3 | |
mbed_official | 579:53297373a894 | 4 | /** |
mbed_official | 579:53297373a894 | 5 | * \addtogroup asfdoc_sam0_system_clock_group |
mbed_official | 579:53297373a894 | 6 | * |
mbed_official | 579:53297373a894 | 7 | * @{ |
mbed_official | 579:53297373a894 | 8 | */ |
mbed_official | 579:53297373a894 | 9 | |
mbed_official | 579:53297373a894 | 10 | #include <compiler.h> |
mbed_official | 579:53297373a894 | 11 | |
mbed_official | 579:53297373a894 | 12 | #ifdef __cplusplus |
mbed_official | 579:53297373a894 | 13 | extern "C" { |
mbed_official | 579:53297373a894 | 14 | #endif |
mbed_official | 579:53297373a894 | 15 | |
mbed_official | 579:53297373a894 | 16 | /** |
mbed_official | 579:53297373a894 | 17 | * \brief List of available GCLK generators. |
mbed_official | 579:53297373a894 | 18 | * |
mbed_official | 579:53297373a894 | 19 | * List of Available GCLK generators. This enum is used in the peripheral |
mbed_official | 579:53297373a894 | 20 | * device drivers to select the GCLK generator to be used for its operation. |
mbed_official | 579:53297373a894 | 21 | * |
mbed_official | 579:53297373a894 | 22 | * The number of GCLK generators available is device dependent. |
mbed_official | 579:53297373a894 | 23 | */ |
mbed_official | 579:53297373a894 | 24 | enum gclk_generator { |
mbed_official | 579:53297373a894 | 25 | /** GCLK generator channel 0. */ |
mbed_official | 579:53297373a894 | 26 | GCLK_GENERATOR_0, |
mbed_official | 579:53297373a894 | 27 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 0) |
mbed_official | 579:53297373a894 | 28 | /** GCLK generator channel 1. */ |
mbed_official | 579:53297373a894 | 29 | GCLK_GENERATOR_1, |
mbed_official | 579:53297373a894 | 30 | #endif |
mbed_official | 579:53297373a894 | 31 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 1) |
mbed_official | 579:53297373a894 | 32 | /** GCLK generator channel 2. */ |
mbed_official | 579:53297373a894 | 33 | GCLK_GENERATOR_2, |
mbed_official | 579:53297373a894 | 34 | #endif |
mbed_official | 579:53297373a894 | 35 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 2) |
mbed_official | 579:53297373a894 | 36 | /** GCLK generator channel 3. */ |
mbed_official | 579:53297373a894 | 37 | GCLK_GENERATOR_3, |
mbed_official | 579:53297373a894 | 38 | #endif |
mbed_official | 579:53297373a894 | 39 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 3) |
mbed_official | 579:53297373a894 | 40 | /** GCLK generator channel 4. */ |
mbed_official | 579:53297373a894 | 41 | GCLK_GENERATOR_4, |
mbed_official | 579:53297373a894 | 42 | #endif |
mbed_official | 579:53297373a894 | 43 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 4) |
mbed_official | 579:53297373a894 | 44 | /** GCLK generator channel 5. */ |
mbed_official | 579:53297373a894 | 45 | GCLK_GENERATOR_5, |
mbed_official | 579:53297373a894 | 46 | #endif |
mbed_official | 579:53297373a894 | 47 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 5) |
mbed_official | 579:53297373a894 | 48 | /** GCLK generator channel 6. */ |
mbed_official | 579:53297373a894 | 49 | GCLK_GENERATOR_6, |
mbed_official | 579:53297373a894 | 50 | #endif |
mbed_official | 579:53297373a894 | 51 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 6) |
mbed_official | 579:53297373a894 | 52 | /** GCLK generator channel 7. */ |
mbed_official | 579:53297373a894 | 53 | GCLK_GENERATOR_7, |
mbed_official | 579:53297373a894 | 54 | #endif |
mbed_official | 579:53297373a894 | 55 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 7) |
mbed_official | 579:53297373a894 | 56 | /** GCLK generator channel 8. */ |
mbed_official | 579:53297373a894 | 57 | GCLK_GENERATOR_8, |
mbed_official | 579:53297373a894 | 58 | #endif |
mbed_official | 579:53297373a894 | 59 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 8) |
mbed_official | 579:53297373a894 | 60 | /** GCLK generator channel 9. */ |
mbed_official | 579:53297373a894 | 61 | GCLK_GENERATOR_9, |
mbed_official | 579:53297373a894 | 62 | #endif |
mbed_official | 579:53297373a894 | 63 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 9) |
mbed_official | 579:53297373a894 | 64 | /** GCLK generator channel 10. */ |
mbed_official | 579:53297373a894 | 65 | GCLK_GENERATOR_10, |
mbed_official | 579:53297373a894 | 66 | #endif |
mbed_official | 579:53297373a894 | 67 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 10) |
mbed_official | 579:53297373a894 | 68 | /** GCLK generator channel 11. */ |
mbed_official | 579:53297373a894 | 69 | GCLK_GENERATOR_11, |
mbed_official | 579:53297373a894 | 70 | #endif |
mbed_official | 579:53297373a894 | 71 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 11) |
mbed_official | 579:53297373a894 | 72 | /** GCLK generator channel 12. */ |
mbed_official | 579:53297373a894 | 73 | GCLK_GENERATOR_12, |
mbed_official | 579:53297373a894 | 74 | #endif |
mbed_official | 579:53297373a894 | 75 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 12) |
mbed_official | 579:53297373a894 | 76 | /** GCLK generator channel 13. */ |
mbed_official | 579:53297373a894 | 77 | GCLK_GENERATOR_13, |
mbed_official | 579:53297373a894 | 78 | #endif |
mbed_official | 579:53297373a894 | 79 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 13) |
mbed_official | 579:53297373a894 | 80 | /** GCLK generator channel 14. */ |
mbed_official | 579:53297373a894 | 81 | GCLK_GENERATOR_14, |
mbed_official | 579:53297373a894 | 82 | #endif |
mbed_official | 579:53297373a894 | 83 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 14) |
mbed_official | 579:53297373a894 | 84 | /** GCLK generator channel 15. */ |
mbed_official | 579:53297373a894 | 85 | GCLK_GENERATOR_15, |
mbed_official | 579:53297373a894 | 86 | #endif |
mbed_official | 579:53297373a894 | 87 | #if defined(__DOXYGEN__) || (GCLK_GEN_NUM_MSB > 15) |
mbed_official | 579:53297373a894 | 88 | /** GCLK generator channel 16. */ |
mbed_official | 579:53297373a894 | 89 | GCLK_GENERATOR_16, |
mbed_official | 579:53297373a894 | 90 | #endif |
mbed_official | 579:53297373a894 | 91 | }; |
mbed_official | 579:53297373a894 | 92 | |
mbed_official | 579:53297373a894 | 93 | /** |
mbed_official | 579:53297373a894 | 94 | * \brief Generic Clock Generator configuration structure. |
mbed_official | 579:53297373a894 | 95 | * |
mbed_official | 579:53297373a894 | 96 | * Configuration structure for a Generic Clock Generator channel. This |
mbed_official | 579:53297373a894 | 97 | * structure should be initialized by the |
mbed_official | 579:53297373a894 | 98 | * \ref system_gclk_gen_get_config_defaults() function before being modified by |
mbed_official | 579:53297373a894 | 99 | * the user application. |
mbed_official | 579:53297373a894 | 100 | */ |
mbed_official | 579:53297373a894 | 101 | struct system_gclk_gen_config { |
mbed_official | 579:53297373a894 | 102 | /** Source clock input channel index, see the \ref system_clock_source. */ |
mbed_official | 579:53297373a894 | 103 | uint8_t source_clock; |
mbed_official | 579:53297373a894 | 104 | /** If \c true, the generator output level is high when disabled. */ |
mbed_official | 579:53297373a894 | 105 | bool high_when_disabled; |
mbed_official | 579:53297373a894 | 106 | /** Integer division factor of the clock output compared to the input. */ |
mbed_official | 579:53297373a894 | 107 | uint32_t division_factor; |
mbed_official | 579:53297373a894 | 108 | /** If \c true, the clock is kept enabled during device standby mode. */ |
mbed_official | 579:53297373a894 | 109 | bool run_in_standby; |
mbed_official | 579:53297373a894 | 110 | /** If \c true, enables GCLK generator clock output to a GPIO pin. */ |
mbed_official | 579:53297373a894 | 111 | bool output_enable; |
mbed_official | 579:53297373a894 | 112 | }; |
mbed_official | 579:53297373a894 | 113 | |
mbed_official | 579:53297373a894 | 114 | /** |
mbed_official | 579:53297373a894 | 115 | * \brief Generic Clock configuration structure. |
mbed_official | 579:53297373a894 | 116 | * |
mbed_official | 579:53297373a894 | 117 | * Configuration structure for a Generic Clock channel. This structure |
mbed_official | 579:53297373a894 | 118 | * should be initialized by the \ref system_gclk_chan_get_config_defaults() |
mbed_official | 579:53297373a894 | 119 | * function before being modified by the user application. |
mbed_official | 579:53297373a894 | 120 | */ |
mbed_official | 579:53297373a894 | 121 | struct system_gclk_chan_config { |
mbed_official | 579:53297373a894 | 122 | /** Generic Clock Generator source channel. */ |
mbed_official | 579:53297373a894 | 123 | enum gclk_generator source_generator; |
mbed_official | 579:53297373a894 | 124 | }; |
mbed_official | 579:53297373a894 | 125 | |
mbed_official | 579:53297373a894 | 126 | /** \name Generic Clock Management |
mbed_official | 579:53297373a894 | 127 | * @{ |
mbed_official | 579:53297373a894 | 128 | */ |
mbed_official | 579:53297373a894 | 129 | void system_gclk_init(void); |
mbed_official | 579:53297373a894 | 130 | |
mbed_official | 579:53297373a894 | 131 | /** @} */ |
mbed_official | 579:53297373a894 | 132 | |
mbed_official | 579:53297373a894 | 133 | |
mbed_official | 579:53297373a894 | 134 | /** |
mbed_official | 579:53297373a894 | 135 | * \name Generic Clock Management (Generators) |
mbed_official | 579:53297373a894 | 136 | * @{ |
mbed_official | 579:53297373a894 | 137 | */ |
mbed_official | 579:53297373a894 | 138 | |
mbed_official | 579:53297373a894 | 139 | /** |
mbed_official | 579:53297373a894 | 140 | * \brief Initializes a Generic Clock Generator configuration structure to defaults. |
mbed_official | 579:53297373a894 | 141 | * |
mbed_official | 579:53297373a894 | 142 | * Initializes a given Generic Clock Generator configuration structure to |
mbed_official | 579:53297373a894 | 143 | * a set of known default values. This function should be called on all |
mbed_official | 579:53297373a894 | 144 | * new instances of these configuration structures before being modified |
mbed_official | 579:53297373a894 | 145 | * by the user application. |
mbed_official | 579:53297373a894 | 146 | * |
mbed_official | 579:53297373a894 | 147 | * The default configuration is as follows: |
mbed_official | 579:53297373a894 | 148 | * \li Clock is generated undivided from the source frequency |
mbed_official | 579:53297373a894 | 149 | * \li Clock generator output is low when the generator is disabled |
mbed_official | 579:53297373a894 | 150 | * \li The input clock is sourced from input clock channel 0 |
mbed_official | 579:53297373a894 | 151 | * \li Clock will be disabled during sleep |
mbed_official | 579:53297373a894 | 152 | * \li The clock output will not be routed to a physical GPIO pin |
mbed_official | 579:53297373a894 | 153 | * |
mbed_official | 579:53297373a894 | 154 | * \param[out] config Configuration structure to initialize to default values |
mbed_official | 579:53297373a894 | 155 | */ |
mbed_official | 579:53297373a894 | 156 | static inline void system_gclk_gen_get_config_defaults( |
mbed_official | 579:53297373a894 | 157 | struct system_gclk_gen_config *const config) |
mbed_official | 579:53297373a894 | 158 | { |
mbed_official | 579:53297373a894 | 159 | /* Sanity check arguments */ |
mbed_official | 579:53297373a894 | 160 | Assert(config); |
mbed_official | 579:53297373a894 | 161 | |
mbed_official | 579:53297373a894 | 162 | /* Default configuration values */ |
mbed_official | 579:53297373a894 | 163 | config->division_factor = 1; |
mbed_official | 579:53297373a894 | 164 | config->high_when_disabled = false; |
mbed_official | 579:53297373a894 | 165 | #if SAML21 |
mbed_official | 579:53297373a894 | 166 | config->source_clock = GCLK_SOURCE_OSC16M; |
mbed_official | 579:53297373a894 | 167 | #else |
mbed_official | 579:53297373a894 | 168 | config->source_clock = GCLK_SOURCE_OSC8M; |
mbed_official | 579:53297373a894 | 169 | #endif |
mbed_official | 579:53297373a894 | 170 | config->run_in_standby = false; |
mbed_official | 579:53297373a894 | 171 | config->output_enable = false; |
mbed_official | 579:53297373a894 | 172 | } |
mbed_official | 579:53297373a894 | 173 | |
mbed_official | 579:53297373a894 | 174 | void system_gclk_gen_set_config( |
mbed_official | 579:53297373a894 | 175 | const uint8_t generator, |
mbed_official | 579:53297373a894 | 176 | struct system_gclk_gen_config *const config); |
mbed_official | 579:53297373a894 | 177 | |
mbed_official | 579:53297373a894 | 178 | void system_gclk_gen_enable( |
mbed_official | 579:53297373a894 | 179 | const uint8_t generator); |
mbed_official | 579:53297373a894 | 180 | |
mbed_official | 579:53297373a894 | 181 | void system_gclk_gen_disable( |
mbed_official | 579:53297373a894 | 182 | const uint8_t generator); |
mbed_official | 579:53297373a894 | 183 | |
mbed_official | 579:53297373a894 | 184 | bool system_gclk_gen_is_enabled( |
mbed_official | 579:53297373a894 | 185 | const uint8_t generator); |
mbed_official | 579:53297373a894 | 186 | |
mbed_official | 579:53297373a894 | 187 | /** @} */ |
mbed_official | 579:53297373a894 | 188 | |
mbed_official | 579:53297373a894 | 189 | |
mbed_official | 579:53297373a894 | 190 | /** |
mbed_official | 579:53297373a894 | 191 | * \name Generic Clock Management (Channels) |
mbed_official | 579:53297373a894 | 192 | * @{ |
mbed_official | 579:53297373a894 | 193 | */ |
mbed_official | 579:53297373a894 | 194 | |
mbed_official | 579:53297373a894 | 195 | /** |
mbed_official | 579:53297373a894 | 196 | * \brief Initializes a Generic Clock configuration structure to defaults. |
mbed_official | 579:53297373a894 | 197 | * |
mbed_official | 579:53297373a894 | 198 | * Initializes a given Generic Clock configuration structure to a set of |
mbed_official | 579:53297373a894 | 199 | * known default values. This function should be called on all new |
mbed_official | 579:53297373a894 | 200 | * instances of these configuration structures before being modified by the |
mbed_official | 579:53297373a894 | 201 | * user application. |
mbed_official | 579:53297373a894 | 202 | * |
mbed_official | 579:53297373a894 | 203 | * The default configuration is as follows: |
mbed_official | 579:53297373a894 | 204 | * \li Clock is sourced from the Generic Clock Generator channel 0 |
mbed_official | 579:53297373a894 | 205 | * \li Clock configuration will not be write-locked when set |
mbed_official | 579:53297373a894 | 206 | * |
mbed_official | 579:53297373a894 | 207 | * \param[out] config Configuration structure to initialize to default values |
mbed_official | 579:53297373a894 | 208 | */ |
mbed_official | 579:53297373a894 | 209 | static inline void system_gclk_chan_get_config_defaults( |
mbed_official | 579:53297373a894 | 210 | struct system_gclk_chan_config *const config) |
mbed_official | 579:53297373a894 | 211 | { |
mbed_official | 579:53297373a894 | 212 | /* Sanity check arguments */ |
mbed_official | 579:53297373a894 | 213 | Assert(config); |
mbed_official | 579:53297373a894 | 214 | |
mbed_official | 579:53297373a894 | 215 | /* Default configuration values */ |
mbed_official | 579:53297373a894 | 216 | config->source_generator = GCLK_GENERATOR_0; |
mbed_official | 579:53297373a894 | 217 | } |
mbed_official | 579:53297373a894 | 218 | |
mbed_official | 579:53297373a894 | 219 | void system_gclk_chan_set_config( |
mbed_official | 579:53297373a894 | 220 | const uint8_t channel, |
mbed_official | 579:53297373a894 | 221 | struct system_gclk_chan_config *const config); |
mbed_official | 579:53297373a894 | 222 | |
mbed_official | 579:53297373a894 | 223 | void system_gclk_chan_enable( |
mbed_official | 579:53297373a894 | 224 | const uint8_t channel); |
mbed_official | 579:53297373a894 | 225 | |
mbed_official | 579:53297373a894 | 226 | void system_gclk_chan_disable( |
mbed_official | 579:53297373a894 | 227 | const uint8_t channel); |
mbed_official | 579:53297373a894 | 228 | |
mbed_official | 579:53297373a894 | 229 | bool system_gclk_chan_is_enabled( |
mbed_official | 579:53297373a894 | 230 | const uint8_t channel); |
mbed_official | 579:53297373a894 | 231 | |
mbed_official | 579:53297373a894 | 232 | void system_gclk_chan_lock( |
mbed_official | 579:53297373a894 | 233 | const uint8_t channel); |
mbed_official | 579:53297373a894 | 234 | |
mbed_official | 579:53297373a894 | 235 | bool system_gclk_chan_is_locked( |
mbed_official | 579:53297373a894 | 236 | const uint8_t channel); |
mbed_official | 579:53297373a894 | 237 | |
mbed_official | 579:53297373a894 | 238 | /** @} */ |
mbed_official | 579:53297373a894 | 239 | |
mbed_official | 579:53297373a894 | 240 | |
mbed_official | 579:53297373a894 | 241 | /** |
mbed_official | 579:53297373a894 | 242 | * \name Generic Clock Frequency Retrieval |
mbed_official | 579:53297373a894 | 243 | * @{ |
mbed_official | 579:53297373a894 | 244 | */ |
mbed_official | 579:53297373a894 | 245 | |
mbed_official | 579:53297373a894 | 246 | uint32_t system_gclk_gen_get_hz( |
mbed_official | 579:53297373a894 | 247 | const uint8_t generator); |
mbed_official | 579:53297373a894 | 248 | |
mbed_official | 579:53297373a894 | 249 | uint32_t system_gclk_chan_get_hz( |
mbed_official | 579:53297373a894 | 250 | const uint8_t channel); |
mbed_official | 579:53297373a894 | 251 | |
mbed_official | 579:53297373a894 | 252 | /** @} */ |
mbed_official | 579:53297373a894 | 253 | |
mbed_official | 579:53297373a894 | 254 | #ifdef __cplusplus |
mbed_official | 579:53297373a894 | 255 | } |
mbed_official | 579:53297373a894 | 256 | #endif |
mbed_official | 579:53297373a894 | 257 | |
mbed_official | 579:53297373a894 | 258 | /** @} */ |
mbed_official | 579:53297373a894 | 259 | |
mbed_official | 579:53297373a894 | 260 | #endif |