marcus chiou
mbed library sources
Fork of
mbed-src
by 
mbed official
targets/hal/TARGET_Atmel/TARGET_SAM21/drivers/tc/tc_sam_d_r/tc.c@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 |
|---|---|---|---|
| mbed_official | 579:53297373a894 | 1 | #include "tc.h" |
| mbed_official | 579:53297373a894 | 2 | |
| mbed_official | 579:53297373a894 | 3 | //#if TC_ASYNC == true // TEMP: Commented by V |
| mbed_official | 579:53297373a894 | 4 | # include "tc_interrupt.h" |
| mbed_official | 579:53297373a894 | 5 | # include <system_interrupt.h> |
| mbed_official | 579:53297373a894 | 6 | |
| mbed_official | 579:53297373a894 | 7 | /** \internal |
| mbed_official | 579:53297373a894 | 8 | * Converts a given TC index to its interrupt vector index. |
| mbed_official | 579:53297373a894 | 9 | */ |
| mbed_official | 579:53297373a894 | 10 | # define _TC_INTERRUPT_VECT_NUM(n, unused) \ |
| mbed_official | 579:53297373a894 | 11 | SYSTEM_INTERRUPT_MODULE_TC##n, |
| mbed_official | 579:53297373a894 | 12 | //#endif |
| mbed_official | 579:53297373a894 | 13 | |
| mbed_official | 579:53297373a894 | 14 | #if !defined(__DOXYGEN__) |
| mbed_official | 579:53297373a894 | 15 | # define _TC_GCLK_ID(n,unused) TPASTE3(TC,n,_GCLK_ID) , |
| mbed_official | 579:53297373a894 | 16 | # define _TC_PM_APBCMASK(n,unused) TPASTE2(PM_APBCMASK_TC,n) , |
| mbed_official | 579:53297373a894 | 17 | |
| mbed_official | 579:53297373a894 | 18 | # define TC_INST_GCLK_ID { MRECURSION(TC_INST_NUM, _TC_GCLK_ID, TC_INST_MAX_ID) } |
| mbed_official | 579:53297373a894 | 19 | # define TC_INST_PM_APBCMASK { MRECURSION(TC_INST_NUM, _TC_PM_APBCMASK, TC_INST_MAX_ID) } |
| mbed_official | 579:53297373a894 | 20 | |
| mbed_official | 579:53297373a894 | 21 | #endif |
| mbed_official | 579:53297373a894 | 22 | |
| mbed_official | 579:53297373a894 | 23 | /** |
| mbed_official | 579:53297373a894 | 24 | * \internal Find the index of given TC module instance. |
| mbed_official | 579:53297373a894 | 25 | * |
| mbed_official | 579:53297373a894 | 26 | * \param[in] TC module instance pointer. |
| mbed_official | 579:53297373a894 | 27 | * |
| mbed_official | 579:53297373a894 | 28 | * \return Index of the given TC module instance. |
| mbed_official | 579:53297373a894 | 29 | */ |
| mbed_official | 579:53297373a894 | 30 | uint8_t _tc_get_inst_index( |
| mbed_official | 579:53297373a894 | 31 | Tc *const hw) |
| mbed_official | 579:53297373a894 | 32 | { |
| mbed_official | 579:53297373a894 | 33 | /* List of available TC modules. */ |
| mbed_official | 579:53297373a894 | 34 | Tc *const tc_modules[TC_INST_NUM] = TC_INSTS; |
| mbed_official | 579:53297373a894 | 35 | |
| mbed_official | 579:53297373a894 | 36 | /* Find index for TC instance. */ |
| mbed_official | 579:53297373a894 | 37 | for (uint32_t i = 0; i < TC_INST_NUM; i++) { |
| mbed_official | 579:53297373a894 | 38 | if (hw == tc_modules[i]) { |
| mbed_official | 579:53297373a894 | 39 | return i; |
| mbed_official | 579:53297373a894 | 40 | } |
| mbed_official | 579:53297373a894 | 41 | } |
| mbed_official | 579:53297373a894 | 42 | |
| mbed_official | 579:53297373a894 | 43 | /* Invalid data given. */ |
| mbed_official | 579:53297373a894 | 44 | Assert(false); |
| mbed_official | 579:53297373a894 | 45 | return 0; |
| mbed_official | 579:53297373a894 | 46 | } |
| mbed_official | 579:53297373a894 | 47 | |
| mbed_official | 579:53297373a894 | 48 | |
| mbed_official | 579:53297373a894 | 49 | /** |
| mbed_official | 579:53297373a894 | 50 | * \brief Initializes a hardware TC module instance. |
| mbed_official | 579:53297373a894 | 51 | * |
| mbed_official | 579:53297373a894 | 52 | * Enables the clock and initializes the TC module, based on the given |
| mbed_official | 579:53297373a894 | 53 | * configuration values. |
| mbed_official | 579:53297373a894 | 54 | * |
| mbed_official | 579:53297373a894 | 55 | * \param[in,out] module_inst Pointer to the software module instance struct |
| mbed_official | 579:53297373a894 | 56 | * \param[in] hw Pointer to the TC hardware module |
| mbed_official | 579:53297373a894 | 57 | * \param[in] config Pointer to the TC configuration options struct |
| mbed_official | 579:53297373a894 | 58 | * |
| mbed_official | 579:53297373a894 | 59 | * \return Status of the initialization procedure. |
| mbed_official | 579:53297373a894 | 60 | * |
| mbed_official | 579:53297373a894 | 61 | * \retval STATUS_OK The module was initialized successfully |
| mbed_official | 579:53297373a894 | 62 | * \retval STATUS_BUSY Hardware module was busy when the |
| mbed_official | 579:53297373a894 | 63 | * initialization procedure was attempted |
| mbed_official | 579:53297373a894 | 64 | * \retval STATUS_INVALID_ARG An invalid configuration option or argument |
| mbed_official | 579:53297373a894 | 65 | * was supplied |
| mbed_official | 579:53297373a894 | 66 | * \retval STATUS_ERR_DENIED Hardware module was already enabled, or the |
| mbed_official | 579:53297373a894 | 67 | * hardware module is configured in 32-bit |
| mbed_official | 579:53297373a894 | 68 | * slave mode |
| mbed_official | 579:53297373a894 | 69 | */ |
| mbed_official | 579:53297373a894 | 70 | enum status_code tc_init( |
| mbed_official | 579:53297373a894 | 71 | struct tc_module *const module_inst, |
| mbed_official | 579:53297373a894 | 72 | Tc *const hw, |
| mbed_official | 579:53297373a894 | 73 | const struct tc_config *const config) |
| mbed_official | 579:53297373a894 | 74 | { |
| mbed_official | 579:53297373a894 | 75 | /* Sanity check arguments */ |
| mbed_official | 579:53297373a894 | 76 | Assert(hw); |
| mbed_official | 579:53297373a894 | 77 | Assert(module_inst); |
| mbed_official | 579:53297373a894 | 78 | Assert(config); |
| mbed_official | 579:53297373a894 | 79 | |
| mbed_official | 579:53297373a894 | 80 | /* Temporary variable to hold all updates to the CTRLA |
| mbed_official | 579:53297373a894 | 81 | * register before they are written to it */ |
| mbed_official | 579:53297373a894 | 82 | uint16_t ctrla_tmp = 0; |
| mbed_official | 579:53297373a894 | 83 | /* Temporary variable to hold all updates to the CTRLBSET |
| mbed_official | 579:53297373a894 | 84 | * register before they are written to it */ |
| mbed_official | 579:53297373a894 | 85 | uint8_t ctrlbset_tmp = 0; |
| mbed_official | 579:53297373a894 | 86 | /* Temporary variable to hold all updates to the CTRLC |
| mbed_official | 579:53297373a894 | 87 | * register before they are written to it */ |
| mbed_official | 579:53297373a894 | 88 | uint8_t ctrlc_tmp = 0; |
| mbed_official | 579:53297373a894 | 89 | /* Temporary variable to hold TC instance number */ |
| mbed_official | 579:53297373a894 | 90 | uint8_t instance = _tc_get_inst_index(hw); |
| mbed_official | 579:53297373a894 | 91 | |
| mbed_official | 579:53297373a894 | 92 | /* Array of GLCK ID for different TC instances */ |
| mbed_official | 579:53297373a894 | 93 | uint8_t inst_gclk_id[] = TC_INST_GCLK_ID; |
| mbed_official | 579:53297373a894 | 94 | /* Array of PM APBC mask bit position for different TC instances */ |
| mbed_official | 579:53297373a894 | 95 | uint16_t inst_pm_apbmask[] = TC_INST_PM_APBCMASK; |
| mbed_official | 579:53297373a894 | 96 | |
| mbed_official | 579:53297373a894 | 97 | struct system_pinmux_config pin_config; |
| mbed_official | 579:53297373a894 | 98 | struct system_gclk_chan_config gclk_chan_config; |
| mbed_official | 579:53297373a894 | 99 | |
| mbed_official | 579:53297373a894 | 100 | //#if TC_ASYNC == true // TEMP: Commented by V |
| mbed_official | 579:53297373a894 | 101 | /* Initialize parameters */ |
| mbed_official | 579:53297373a894 | 102 | for (uint8_t i = 0; i < TC_CALLBACK_N; i++) { |
| mbed_official | 579:53297373a894 | 103 | module_inst->callback[i] = NULL; |
| mbed_official | 579:53297373a894 | 104 | } |
| mbed_official | 579:53297373a894 | 105 | module_inst->register_callback_mask = 0x00; |
| mbed_official | 579:53297373a894 | 106 | module_inst->enable_callback_mask = 0x00; |
| mbed_official | 579:53297373a894 | 107 | |
| mbed_official | 579:53297373a894 | 108 | /* Register this instance for callbacks*/ |
| mbed_official | 579:53297373a894 | 109 | _tc_instances[instance] = module_inst; |
| mbed_official | 579:53297373a894 | 110 | //#endif |
| mbed_official | 579:53297373a894 | 111 | |
| mbed_official | 579:53297373a894 | 112 | /* Associate the given device instance with the hardware module */ |
| mbed_official | 579:53297373a894 | 113 | module_inst->hw = hw; |
| mbed_official | 579:53297373a894 | 114 | |
| mbed_official | 579:53297373a894 | 115 | #if SAMD10 || SAMD11 |
| mbed_official | 579:53297373a894 | 116 | /* Check if even numbered TC modules are being configured in 32-bit |
| mbed_official | 579:53297373a894 | 117 | * counter size. Only odd numbered counters are allowed to be |
| mbed_official | 579:53297373a894 | 118 | * configured in 32-bit counter size. |
| mbed_official | 579:53297373a894 | 119 | */ |
| mbed_official | 579:53297373a894 | 120 | if ((config->counter_size == TC_COUNTER_SIZE_32BIT) && |
| mbed_official | 579:53297373a894 | 121 | !((instance + TC_INSTANCE_OFFSET) & 0x01)) { |
| mbed_official | 579:53297373a894 | 122 | Assert(false); |
| mbed_official | 579:53297373a894 | 123 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 579:53297373a894 | 124 | } |
| mbed_official | 579:53297373a894 | 125 | #else |
| mbed_official | 579:53297373a894 | 126 | /* Check if odd numbered TC modules are being configured in 32-bit |
| mbed_official | 579:53297373a894 | 127 | * counter size. Only even numbered counters are allowed to be |
| mbed_official | 579:53297373a894 | 128 | * configured in 32-bit counter size. |
| mbed_official | 579:53297373a894 | 129 | */ |
| mbed_official | 579:53297373a894 | 130 | if ((config->counter_size == TC_COUNTER_SIZE_32BIT) && |
| mbed_official | 579:53297373a894 | 131 | ((instance + TC_INSTANCE_OFFSET) & 0x01)) { |
| mbed_official | 579:53297373a894 | 132 | Assert(false); |
| mbed_official | 579:53297373a894 | 133 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 579:53297373a894 | 134 | } |
| mbed_official | 579:53297373a894 | 135 | #endif |
| mbed_official | 579:53297373a894 | 136 | |
| mbed_official | 579:53297373a894 | 137 | /* Make the counter size variable in the module_inst struct reflect |
| mbed_official | 579:53297373a894 | 138 | * the counter size in the module |
| mbed_official | 579:53297373a894 | 139 | */ |
| mbed_official | 579:53297373a894 | 140 | module_inst->counter_size = config->counter_size; |
| mbed_official | 579:53297373a894 | 141 | |
| mbed_official | 579:53297373a894 | 142 | if (hw->COUNT8.CTRLA.reg & TC_CTRLA_SWRST) { |
| mbed_official | 579:53297373a894 | 143 | /* We are in the middle of a reset. Abort. */ |
| mbed_official | 579:53297373a894 | 144 | return STATUS_BUSY; |
| mbed_official | 579:53297373a894 | 145 | } |
| mbed_official | 579:53297373a894 | 146 | |
| mbed_official | 579:53297373a894 | 147 | if (hw->COUNT8.STATUS.reg & TC_STATUS_SLAVE) { |
| mbed_official | 579:53297373a894 | 148 | /* Module is used as a slave */ |
| mbed_official | 579:53297373a894 | 149 | return STATUS_ERR_DENIED; |
| mbed_official | 579:53297373a894 | 150 | } |
| mbed_official | 579:53297373a894 | 151 | |
| mbed_official | 579:53297373a894 | 152 | if (hw->COUNT8.CTRLA.reg & TC_CTRLA_ENABLE) { |
| mbed_official | 579:53297373a894 | 153 | /* Module must be disabled before initialization. Abort. */ |
| mbed_official | 579:53297373a894 | 154 | return STATUS_ERR_DENIED; |
| mbed_official | 579:53297373a894 | 155 | } |
| mbed_official | 579:53297373a894 | 156 | |
| mbed_official | 579:53297373a894 | 157 | /* Set up the TC PWM out pin for channel 0 */ |
| mbed_official | 579:53297373a894 | 158 | if (config->pwm_channel[0].enabled) { |
| mbed_official | 579:53297373a894 | 159 | system_pinmux_get_config_defaults(&pin_config); |
| mbed_official | 579:53297373a894 | 160 | pin_config.mux_position = config->pwm_channel[0].pin_mux; |
| mbed_official | 579:53297373a894 | 161 | pin_config.direction = SYSTEM_PINMUX_PIN_DIR_OUTPUT; |
| mbed_official | 579:53297373a894 | 162 | system_pinmux_pin_set_config( |
| mbed_official | 579:53297373a894 | 163 | config->pwm_channel[0].pin_out, &pin_config); |
| mbed_official | 579:53297373a894 | 164 | } |
| mbed_official | 579:53297373a894 | 165 | |
| mbed_official | 579:53297373a894 | 166 | /* Set up the TC PWM out pin for channel 1 */ |
| mbed_official | 579:53297373a894 | 167 | if (config->pwm_channel[1].enabled) { |
| mbed_official | 579:53297373a894 | 168 | system_pinmux_get_config_defaults(&pin_config); |
| mbed_official | 579:53297373a894 | 169 | pin_config.mux_position = config->pwm_channel[1].pin_mux; |
| mbed_official | 579:53297373a894 | 170 | pin_config.direction = SYSTEM_PINMUX_PIN_DIR_OUTPUT; |
| mbed_official | 579:53297373a894 | 171 | system_pinmux_pin_set_config( |
| mbed_official | 579:53297373a894 | 172 | config->pwm_channel[1].pin_out, &pin_config); |
| mbed_official | 579:53297373a894 | 173 | } |
| mbed_official | 579:53297373a894 | 174 | |
| mbed_official | 579:53297373a894 | 175 | /* Enable the user interface clock in the PM */ |
| mbed_official | 579:53297373a894 | 176 | system_apb_clock_set_mask(SYSTEM_CLOCK_APB_APBC, |
| mbed_official | 579:53297373a894 | 177 | inst_pm_apbmask[instance]); |
| mbed_official | 579:53297373a894 | 178 | |
| mbed_official | 579:53297373a894 | 179 | /* Enable the slave counter if counter_size is 32-bit */ |
| mbed_official | 579:53297373a894 | 180 | if ((config->counter_size == TC_COUNTER_SIZE_32BIT)) { |
| mbed_official | 579:53297373a894 | 181 | /* Enable the user interface clock in the PM */ |
| mbed_official | 579:53297373a894 | 182 | system_apb_clock_set_mask(SYSTEM_CLOCK_APB_APBC, |
| mbed_official | 579:53297373a894 | 183 | inst_pm_apbmask[instance + 1]); |
| mbed_official | 579:53297373a894 | 184 | } |
| mbed_official | 579:53297373a894 | 185 | |
| mbed_official | 579:53297373a894 | 186 | /* Setup clock for module */ |
| mbed_official | 579:53297373a894 | 187 | system_gclk_chan_get_config_defaults(&gclk_chan_config); |
| mbed_official | 579:53297373a894 | 188 | gclk_chan_config.source_generator = config->clock_source; |
| mbed_official | 579:53297373a894 | 189 | system_gclk_chan_set_config(inst_gclk_id[instance], &gclk_chan_config); |
| mbed_official | 579:53297373a894 | 190 | system_gclk_chan_enable(inst_gclk_id[instance]); |
| mbed_official | 579:53297373a894 | 191 | |
| mbed_official | 579:53297373a894 | 192 | /* Set ctrla register */ |
| mbed_official | 579:53297373a894 | 193 | ctrla_tmp = |
| mbed_official | 579:53297373a894 | 194 | (uint32_t)config->counter_size | |
| mbed_official | 579:53297373a894 | 195 | (uint32_t)config->wave_generation | |
| mbed_official | 579:53297373a894 | 196 | (uint32_t)config->reload_action | |
| mbed_official | 579:53297373a894 | 197 | (uint32_t)config->clock_prescaler; |
| mbed_official | 579:53297373a894 | 198 | |
| mbed_official | 579:53297373a894 | 199 | if (config->run_in_standby) { |
| mbed_official | 579:53297373a894 | 200 | ctrla_tmp |= TC_CTRLA_RUNSTDBY; |
| mbed_official | 579:53297373a894 | 201 | } |
| mbed_official | 579:53297373a894 | 202 | |
| mbed_official | 579:53297373a894 | 203 | /* Write configuration to register */ |
| mbed_official | 579:53297373a894 | 204 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 205 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 206 | } |
| mbed_official | 579:53297373a894 | 207 | hw->COUNT8.CTRLA.reg = ctrla_tmp; |
| mbed_official | 579:53297373a894 | 208 | |
| mbed_official | 579:53297373a894 | 209 | /* Set ctrlb register */ |
| mbed_official | 579:53297373a894 | 210 | if (config->oneshot) { |
| mbed_official | 579:53297373a894 | 211 | ctrlbset_tmp = TC_CTRLBSET_ONESHOT; |
| mbed_official | 579:53297373a894 | 212 | } |
| mbed_official | 579:53297373a894 | 213 | |
| mbed_official | 579:53297373a894 | 214 | if (config->count_direction) { |
| mbed_official | 579:53297373a894 | 215 | ctrlbset_tmp |= TC_CTRLBSET_DIR; |
| mbed_official | 579:53297373a894 | 216 | } |
| mbed_official | 579:53297373a894 | 217 | |
| mbed_official | 579:53297373a894 | 218 | /* Clear old ctrlb configuration */ |
| mbed_official | 579:53297373a894 | 219 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 220 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 221 | } |
| mbed_official | 579:53297373a894 | 222 | hw->COUNT8.CTRLBCLR.reg = 0xFF; |
| mbed_official | 579:53297373a894 | 223 | |
| mbed_official | 579:53297373a894 | 224 | /* Check if we actually need to go into a wait state. */ |
| mbed_official | 579:53297373a894 | 225 | if (ctrlbset_tmp) { |
| mbed_official | 579:53297373a894 | 226 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 227 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 228 | } |
| mbed_official | 579:53297373a894 | 229 | /* Write configuration to register */ |
| mbed_official | 579:53297373a894 | 230 | hw->COUNT8.CTRLBSET.reg = ctrlbset_tmp; |
| mbed_official | 579:53297373a894 | 231 | } |
| mbed_official | 579:53297373a894 | 232 | |
| mbed_official | 579:53297373a894 | 233 | /* Set ctrlc register*/ |
| mbed_official | 579:53297373a894 | 234 | ctrlc_tmp = config->waveform_invert_output; |
| mbed_official | 579:53297373a894 | 235 | for (uint8_t i = 0; i < NUMBER_OF_COMPARE_CAPTURE_CHANNELS; i++) { |
| mbed_official | 579:53297373a894 | 236 | if (config->enable_capture_on_channel[i] == true) { |
| mbed_official | 579:53297373a894 | 237 | ctrlc_tmp |= (TC_CTRLC_CPTEN(1) << i); |
| mbed_official | 579:53297373a894 | 238 | } |
| mbed_official | 579:53297373a894 | 239 | } |
| mbed_official | 579:53297373a894 | 240 | |
| mbed_official | 579:53297373a894 | 241 | /* Write configuration to register */ |
| mbed_official | 579:53297373a894 | 242 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 243 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 244 | } |
| mbed_official | 579:53297373a894 | 245 | hw->COUNT8.CTRLC.reg = ctrlc_tmp; |
| mbed_official | 579:53297373a894 | 246 | |
| mbed_official | 579:53297373a894 | 247 | /* Write configuration to register */ |
| mbed_official | 579:53297373a894 | 248 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 249 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 250 | } |
| mbed_official | 579:53297373a894 | 251 | |
| mbed_official | 579:53297373a894 | 252 | /* Switch for TC counter size */ |
| mbed_official | 579:53297373a894 | 253 | switch (module_inst->counter_size) { |
| mbed_official | 579:53297373a894 | 254 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 579:53297373a894 | 255 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 256 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 257 | } |
| mbed_official | 579:53297373a894 | 258 | |
| mbed_official | 579:53297373a894 | 259 | hw->COUNT8.COUNT.reg = |
| mbed_official | 579:53297373a894 | 260 | config->counter_8_bit.value; |
| mbed_official | 579:53297373a894 | 261 | |
| mbed_official | 579:53297373a894 | 262 | |
| mbed_official | 579:53297373a894 | 263 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 264 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 265 | } |
| mbed_official | 579:53297373a894 | 266 | |
| mbed_official | 579:53297373a894 | 267 | hw->COUNT8.PER.reg = |
| mbed_official | 579:53297373a894 | 268 | config->counter_8_bit.period; |
| mbed_official | 579:53297373a894 | 269 | |
| mbed_official | 579:53297373a894 | 270 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 271 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 272 | } |
| mbed_official | 579:53297373a894 | 273 | |
| mbed_official | 579:53297373a894 | 274 | hw->COUNT8.CC[0].reg = |
| mbed_official | 579:53297373a894 | 275 | config->counter_8_bit.compare_capture_channel[0]; |
| mbed_official | 579:53297373a894 | 276 | |
| mbed_official | 579:53297373a894 | 277 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 278 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 279 | } |
| mbed_official | 579:53297373a894 | 280 | |
| mbed_official | 579:53297373a894 | 281 | hw->COUNT8.CC[1].reg = |
| mbed_official | 579:53297373a894 | 282 | config->counter_8_bit.compare_capture_channel[1]; |
| mbed_official | 579:53297373a894 | 283 | |
| mbed_official | 579:53297373a894 | 284 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 285 | |
| mbed_official | 579:53297373a894 | 286 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 579:53297373a894 | 287 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 288 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 289 | } |
| mbed_official | 579:53297373a894 | 290 | |
| mbed_official | 579:53297373a894 | 291 | hw->COUNT16.COUNT.reg |
| mbed_official | 579:53297373a894 | 292 | = config->counter_16_bit.value; |
| mbed_official | 579:53297373a894 | 293 | |
| mbed_official | 579:53297373a894 | 294 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 295 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 296 | } |
| mbed_official | 579:53297373a894 | 297 | |
| mbed_official | 579:53297373a894 | 298 | hw->COUNT16.CC[0].reg = |
| mbed_official | 579:53297373a894 | 299 | config->counter_16_bit.compare_capture_channel[0]; |
| mbed_official | 579:53297373a894 | 300 | |
| mbed_official | 579:53297373a894 | 301 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 302 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 303 | } |
| mbed_official | 579:53297373a894 | 304 | |
| mbed_official | 579:53297373a894 | 305 | hw->COUNT16.CC[1].reg = |
| mbed_official | 579:53297373a894 | 306 | config->counter_16_bit.compare_capture_channel[1]; |
| mbed_official | 579:53297373a894 | 307 | |
| mbed_official | 579:53297373a894 | 308 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 309 | |
| mbed_official | 579:53297373a894 | 310 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 579:53297373a894 | 311 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 312 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 313 | } |
| mbed_official | 579:53297373a894 | 314 | |
| mbed_official | 579:53297373a894 | 315 | hw->COUNT32.COUNT.reg |
| mbed_official | 579:53297373a894 | 316 | = config->counter_32_bit.value; |
| mbed_official | 579:53297373a894 | 317 | |
| mbed_official | 579:53297373a894 | 318 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 319 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 320 | } |
| mbed_official | 579:53297373a894 | 321 | |
| mbed_official | 579:53297373a894 | 322 | hw->COUNT32.CC[0].reg = |
| mbed_official | 579:53297373a894 | 323 | config->counter_32_bit.compare_capture_channel[0]; |
| mbed_official | 579:53297373a894 | 324 | |
| mbed_official | 579:53297373a894 | 325 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 326 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 327 | } |
| mbed_official | 579:53297373a894 | 328 | |
| mbed_official | 579:53297373a894 | 329 | hw->COUNT32.CC[1].reg = |
| mbed_official | 579:53297373a894 | 330 | config->counter_32_bit.compare_capture_channel[1]; |
| mbed_official | 579:53297373a894 | 331 | |
| mbed_official | 579:53297373a894 | 332 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 333 | } |
| mbed_official | 579:53297373a894 | 334 | |
| mbed_official | 579:53297373a894 | 335 | Assert(false); |
| mbed_official | 579:53297373a894 | 336 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 579:53297373a894 | 337 | } |
| mbed_official | 579:53297373a894 | 338 | |
| mbed_official | 579:53297373a894 | 339 | /** |
| mbed_official | 579:53297373a894 | 340 | * \brief Sets TC module count value. |
| mbed_official | 579:53297373a894 | 341 | * |
| mbed_official | 579:53297373a894 | 342 | * Sets the current timer count value of a initialized TC module. The |
| mbed_official | 579:53297373a894 | 343 | * specified TC module may be started or stopped. |
| mbed_official | 579:53297373a894 | 344 | * |
| mbed_official | 579:53297373a894 | 345 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 579:53297373a894 | 346 | * \param[in] count New timer count value to set |
| mbed_official | 579:53297373a894 | 347 | * |
| mbed_official | 579:53297373a894 | 348 | * \return Status of the count update procedure. |
| mbed_official | 579:53297373a894 | 349 | * |
| mbed_official | 579:53297373a894 | 350 | * \retval STATUS_OK The timer count was updated successfully |
| mbed_official | 579:53297373a894 | 351 | * \retval STATUS_ERR_INVALID_ARG An invalid timer counter size was specified |
| mbed_official | 579:53297373a894 | 352 | */ |
| mbed_official | 579:53297373a894 | 353 | enum status_code tc_set_count_value( |
| mbed_official | 579:53297373a894 | 354 | const struct tc_module *const module_inst, |
| mbed_official | 579:53297373a894 | 355 | const uint32_t count) |
| mbed_official | 579:53297373a894 | 356 | { |
| mbed_official | 579:53297373a894 | 357 | /* Sanity check arguments */ |
| mbed_official | 579:53297373a894 | 358 | Assert(module_inst); |
| mbed_official | 579:53297373a894 | 359 | Assert(module_inst->hw); |
| mbed_official | 579:53297373a894 | 360 | |
| mbed_official | 579:53297373a894 | 361 | /* Get a pointer to the module's hardware instance*/ |
| mbed_official | 579:53297373a894 | 362 | Tc *const tc_module = module_inst->hw; |
| mbed_official | 579:53297373a894 | 363 | |
| mbed_official | 579:53297373a894 | 364 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 365 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 366 | } |
| mbed_official | 579:53297373a894 | 367 | |
| mbed_official | 579:53297373a894 | 368 | /* Write to based on the TC counter_size */ |
| mbed_official | 579:53297373a894 | 369 | switch (module_inst->counter_size) { |
| mbed_official | 579:53297373a894 | 370 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 579:53297373a894 | 371 | tc_module->COUNT8.COUNT.reg = (uint8_t)count; |
| mbed_official | 579:53297373a894 | 372 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 373 | |
| mbed_official | 579:53297373a894 | 374 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 579:53297373a894 | 375 | tc_module->COUNT16.COUNT.reg = (uint16_t)count; |
| mbed_official | 579:53297373a894 | 376 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 377 | |
| mbed_official | 579:53297373a894 | 378 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 579:53297373a894 | 379 | tc_module->COUNT32.COUNT.reg = (uint32_t)count; |
| mbed_official | 579:53297373a894 | 380 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 381 | |
| mbed_official | 579:53297373a894 | 382 | default: |
| mbed_official | 579:53297373a894 | 383 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 579:53297373a894 | 384 | } |
| mbed_official | 579:53297373a894 | 385 | } |
| mbed_official | 579:53297373a894 | 386 | |
| mbed_official | 579:53297373a894 | 387 | /** |
| mbed_official | 579:53297373a894 | 388 | * \brief Get TC module count value. |
| mbed_official | 579:53297373a894 | 389 | * |
| mbed_official | 579:53297373a894 | 390 | * Retrieves the current count value of a TC module. The specified TC module |
| mbed_official | 579:53297373a894 | 391 | * may be started or stopped. |
| mbed_official | 579:53297373a894 | 392 | * |
| mbed_official | 579:53297373a894 | 393 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 579:53297373a894 | 394 | * |
| mbed_official | 579:53297373a894 | 395 | * \return Count value of the specified TC module. |
| mbed_official | 579:53297373a894 | 396 | */ |
| mbed_official | 579:53297373a894 | 397 | uint32_t tc_get_count_value( |
| mbed_official | 579:53297373a894 | 398 | const struct tc_module *const module_inst) |
| mbed_official | 579:53297373a894 | 399 | { |
| mbed_official | 579:53297373a894 | 400 | /* Sanity check arguments */ |
| mbed_official | 579:53297373a894 | 401 | Assert(module_inst); |
| mbed_official | 579:53297373a894 | 402 | Assert(module_inst->hw); |
| mbed_official | 579:53297373a894 | 403 | |
| mbed_official | 579:53297373a894 | 404 | /* Get a pointer to the module's hardware instance */ |
| mbed_official | 579:53297373a894 | 405 | Tc *const tc_module = module_inst->hw; |
| mbed_official | 579:53297373a894 | 406 | |
| mbed_official | 579:53297373a894 | 407 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 408 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 409 | } |
| mbed_official | 579:53297373a894 | 410 | |
| mbed_official | 579:53297373a894 | 411 | /* Read from based on the TC counter size */ |
| mbed_official | 579:53297373a894 | 412 | switch (module_inst->counter_size) { |
| mbed_official | 579:53297373a894 | 413 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 579:53297373a894 | 414 | return (uint32_t)tc_module->COUNT8.COUNT.reg; |
| mbed_official | 579:53297373a894 | 415 | |
| mbed_official | 579:53297373a894 | 416 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 579:53297373a894 | 417 | return (uint32_t)tc_module->COUNT16.COUNT.reg; |
| mbed_official | 579:53297373a894 | 418 | |
| mbed_official | 579:53297373a894 | 419 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 579:53297373a894 | 420 | return tc_module->COUNT32.COUNT.reg; |
| mbed_official | 579:53297373a894 | 421 | } |
| mbed_official | 579:53297373a894 | 422 | |
| mbed_official | 579:53297373a894 | 423 | Assert(false); |
| mbed_official | 579:53297373a894 | 424 | return 0; |
| mbed_official | 579:53297373a894 | 425 | } |
| mbed_official | 579:53297373a894 | 426 | |
| mbed_official | 579:53297373a894 | 427 | /** |
| mbed_official | 579:53297373a894 | 428 | * \brief Gets the TC module capture value. |
| mbed_official | 579:53297373a894 | 429 | * |
| mbed_official | 579:53297373a894 | 430 | * Retrieves the capture value in the indicated TC module capture channel. |
| mbed_official | 579:53297373a894 | 431 | * |
| mbed_official | 579:53297373a894 | 432 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 579:53297373a894 | 433 | * \param[in] channel_index Index of the Compare Capture channel to read |
| mbed_official | 579:53297373a894 | 434 | * |
| mbed_official | 579:53297373a894 | 435 | * \return Capture value stored in the specified timer channel. |
| mbed_official | 579:53297373a894 | 436 | */ |
| mbed_official | 579:53297373a894 | 437 | uint32_t tc_get_capture_value( |
| mbed_official | 579:53297373a894 | 438 | const struct tc_module *const module_inst, |
| mbed_official | 579:53297373a894 | 439 | const enum tc_compare_capture_channel channel_index) |
| mbed_official | 579:53297373a894 | 440 | { |
| mbed_official | 579:53297373a894 | 441 | /* Sanity check arguments */ |
| mbed_official | 579:53297373a894 | 442 | Assert(module_inst); |
| mbed_official | 579:53297373a894 | 443 | Assert(module_inst->hw); |
| mbed_official | 579:53297373a894 | 444 | |
| mbed_official | 579:53297373a894 | 445 | /* Get a pointer to the module's hardware instance */ |
| mbed_official | 579:53297373a894 | 446 | Tc *const tc_module = module_inst->hw; |
| mbed_official | 579:53297373a894 | 447 | |
| mbed_official | 579:53297373a894 | 448 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 449 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 450 | } |
| mbed_official | 579:53297373a894 | 451 | |
| mbed_official | 579:53297373a894 | 452 | /* Read out based on the TC counter size */ |
| mbed_official | 579:53297373a894 | 453 | switch (module_inst->counter_size) { |
| mbed_official | 579:53297373a894 | 454 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 579:53297373a894 | 455 | if (channel_index < |
| mbed_official | 579:53297373a894 | 456 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 579:53297373a894 | 457 | return tc_module->COUNT8.CC[channel_index].reg; |
| mbed_official | 579:53297373a894 | 458 | } |
| mbed_official | 579:53297373a894 | 459 | |
| mbed_official | 579:53297373a894 | 460 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 579:53297373a894 | 461 | if (channel_index < |
| mbed_official | 579:53297373a894 | 462 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 579:53297373a894 | 463 | return tc_module->COUNT16.CC[channel_index].reg; |
| mbed_official | 579:53297373a894 | 464 | } |
| mbed_official | 579:53297373a894 | 465 | |
| mbed_official | 579:53297373a894 | 466 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 579:53297373a894 | 467 | if (channel_index < |
| mbed_official | 579:53297373a894 | 468 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 579:53297373a894 | 469 | return tc_module->COUNT32.CC[channel_index].reg; |
| mbed_official | 579:53297373a894 | 470 | } |
| mbed_official | 579:53297373a894 | 471 | } |
| mbed_official | 579:53297373a894 | 472 | |
| mbed_official | 579:53297373a894 | 473 | Assert(false); |
| mbed_official | 579:53297373a894 | 474 | return 0; |
| mbed_official | 579:53297373a894 | 475 | } |
| mbed_official | 579:53297373a894 | 476 | |
| mbed_official | 579:53297373a894 | 477 | /** |
| mbed_official | 579:53297373a894 | 478 | * \brief Sets a TC module compare value. |
| mbed_official | 579:53297373a894 | 479 | * |
| mbed_official | 579:53297373a894 | 480 | * Writes a compare value to the given TC module compare/capture channel. |
| mbed_official | 579:53297373a894 | 481 | * |
| mbed_official | 579:53297373a894 | 482 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 579:53297373a894 | 483 | * \param[in] channel_index Index of the compare channel to write to |
| mbed_official | 579:53297373a894 | 484 | * \param[in] compare New compare value to set |
| mbed_official | 579:53297373a894 | 485 | * |
| mbed_official | 579:53297373a894 | 486 | * \return Status of the compare update procedure. |
| mbed_official | 579:53297373a894 | 487 | * |
| mbed_official | 579:53297373a894 | 488 | * \retval STATUS_OK The compare value was updated successfully |
| mbed_official | 579:53297373a894 | 489 | * \retval STATUS_ERR_INVALID_ARG An invalid channel index was supplied |
| mbed_official | 579:53297373a894 | 490 | */ |
| mbed_official | 579:53297373a894 | 491 | enum status_code tc_set_compare_value( |
| mbed_official | 579:53297373a894 | 492 | const struct tc_module *const module_inst, |
| mbed_official | 579:53297373a894 | 493 | const enum tc_compare_capture_channel channel_index, |
| mbed_official | 579:53297373a894 | 494 | const uint32_t compare) |
| mbed_official | 579:53297373a894 | 495 | { |
| mbed_official | 579:53297373a894 | 496 | /* Sanity check arguments */ |
| mbed_official | 579:53297373a894 | 497 | Assert(module_inst); |
| mbed_official | 579:53297373a894 | 498 | Assert(module_inst->hw); |
| mbed_official | 579:53297373a894 | 499 | |
| mbed_official | 579:53297373a894 | 500 | /* Get a pointer to the module's hardware instance */ |
| mbed_official | 579:53297373a894 | 501 | Tc *const tc_module = module_inst->hw; |
| mbed_official | 579:53297373a894 | 502 | |
| mbed_official | 579:53297373a894 | 503 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 504 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 505 | } |
| mbed_official | 579:53297373a894 | 506 | |
| mbed_official | 579:53297373a894 | 507 | /* Read out based on the TC counter size */ |
| mbed_official | 579:53297373a894 | 508 | switch (module_inst->counter_size) { |
| mbed_official | 579:53297373a894 | 509 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 579:53297373a894 | 510 | if (channel_index < |
| mbed_official | 579:53297373a894 | 511 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 579:53297373a894 | 512 | tc_module->COUNT8.CC[channel_index].reg = |
| mbed_official | 579:53297373a894 | 513 | (uint8_t)compare; |
| mbed_official | 579:53297373a894 | 514 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 515 | } |
| mbed_official | 579:53297373a894 | 516 | |
| mbed_official | 579:53297373a894 | 517 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 579:53297373a894 | 518 | if (channel_index < |
| mbed_official | 579:53297373a894 | 519 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 579:53297373a894 | 520 | tc_module->COUNT16.CC[channel_index].reg = |
| mbed_official | 579:53297373a894 | 521 | (uint16_t)compare; |
| mbed_official | 579:53297373a894 | 522 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 523 | } |
| mbed_official | 579:53297373a894 | 524 | |
| mbed_official | 579:53297373a894 | 525 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 579:53297373a894 | 526 | if (channel_index < |
| mbed_official | 579:53297373a894 | 527 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 579:53297373a894 | 528 | tc_module->COUNT32.CC[channel_index].reg = |
| mbed_official | 579:53297373a894 | 529 | (uint32_t)compare; |
| mbed_official | 579:53297373a894 | 530 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 531 | } |
| mbed_official | 579:53297373a894 | 532 | } |
| mbed_official | 579:53297373a894 | 533 | |
| mbed_official | 579:53297373a894 | 534 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 579:53297373a894 | 535 | } |
| mbed_official | 579:53297373a894 | 536 | |
| mbed_official | 579:53297373a894 | 537 | /** |
| mbed_official | 579:53297373a894 | 538 | * \brief Resets the TC module. |
| mbed_official | 579:53297373a894 | 539 | * |
| mbed_official | 579:53297373a894 | 540 | * Resets the TC module, restoring all hardware module registers to their |
| mbed_official | 579:53297373a894 | 541 | * default values and disabling the module. The TC module will not be |
| mbed_official | 579:53297373a894 | 542 | * accessible while the reset is being performed. |
| mbed_official | 579:53297373a894 | 543 | * |
| mbed_official | 579:53297373a894 | 544 | * \note When resetting a 32-bit counter only the master TC module's instance |
| mbed_official | 579:53297373a894 | 545 | * structure should be passed to the function. |
| mbed_official | 579:53297373a894 | 546 | * |
| mbed_official | 579:53297373a894 | 547 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 579:53297373a894 | 548 | * |
| mbed_official | 579:53297373a894 | 549 | * \return Status of the procedure. |
| mbed_official | 579:53297373a894 | 550 | * \retval STATUS_OK The module was reset successfully |
| mbed_official | 579:53297373a894 | 551 | * \retval STATUS_ERR_UNSUPPORTED_DEV A 32-bit slave TC module was passed to |
| mbed_official | 579:53297373a894 | 552 | * the function. Only use reset on master |
| mbed_official | 579:53297373a894 | 553 | * TC. |
| mbed_official | 579:53297373a894 | 554 | */ |
| mbed_official | 579:53297373a894 | 555 | enum status_code tc_reset( |
| mbed_official | 579:53297373a894 | 556 | const struct tc_module *const module_inst) |
| mbed_official | 579:53297373a894 | 557 | { |
| mbed_official | 579:53297373a894 | 558 | /* Sanity check arguments */ |
| mbed_official | 579:53297373a894 | 559 | Assert(module_inst); |
| mbed_official | 579:53297373a894 | 560 | Assert(module_inst->hw); |
| mbed_official | 579:53297373a894 | 561 | |
| mbed_official | 579:53297373a894 | 562 | /* Get a pointer to the module hardware instance */ |
| mbed_official | 579:53297373a894 | 563 | TcCount8 *const tc_module = &(module_inst->hw->COUNT8); |
| mbed_official | 579:53297373a894 | 564 | |
| mbed_official | 579:53297373a894 | 565 | if (tc_module->STATUS.reg & TC_STATUS_SLAVE) { |
| mbed_official | 579:53297373a894 | 566 | return STATUS_ERR_UNSUPPORTED_DEV; |
| mbed_official | 579:53297373a894 | 567 | } |
| mbed_official | 579:53297373a894 | 568 | |
| mbed_official | 579:53297373a894 | 569 | /* Disable this module if it is running */ |
| mbed_official | 579:53297373a894 | 570 | if (tc_module->CTRLA.reg & TC_CTRLA_ENABLE) { |
| mbed_official | 579:53297373a894 | 571 | tc_disable(module_inst); |
| mbed_official | 579:53297373a894 | 572 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 573 | /* wait while module is disabling */ |
| mbed_official | 579:53297373a894 | 574 | } |
| mbed_official | 579:53297373a894 | 575 | } |
| mbed_official | 579:53297373a894 | 576 | |
| mbed_official | 579:53297373a894 | 577 | /* Reset this TC module */ |
| mbed_official | 579:53297373a894 | 578 | tc_module->CTRLA.reg |= TC_CTRLA_SWRST; |
| mbed_official | 579:53297373a894 | 579 | |
| mbed_official | 579:53297373a894 | 580 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 581 | } |
| mbed_official | 579:53297373a894 | 582 | |
| mbed_official | 579:53297373a894 | 583 | /** |
| mbed_official | 579:53297373a894 | 584 | * \brief Set the timer TOP/period value. |
| mbed_official | 579:53297373a894 | 585 | * |
| mbed_official | 579:53297373a894 | 586 | * For 8-bit counter size this function writes the top value to the period |
| mbed_official | 579:53297373a894 | 587 | * register. |
| mbed_official | 579:53297373a894 | 588 | * |
| mbed_official | 579:53297373a894 | 589 | * For 16- and 32-bit counter size this function writes the top value to |
| mbed_official | 579:53297373a894 | 590 | * Capture Compare register 0. The value in this register can not be used for |
| mbed_official | 579:53297373a894 | 591 | * any other purpose. |
| mbed_official | 579:53297373a894 | 592 | * |
| mbed_official | 579:53297373a894 | 593 | * \note This function is designed to be used in PWM or frequency |
| mbed_official | 579:53297373a894 | 594 | * match modes only. When the counter is set to 16- or 32-bit counter |
| mbed_official | 579:53297373a894 | 595 | * size. In 8-bit counter size it will always be possible to change the |
| mbed_official | 579:53297373a894 | 596 | * top value even in normal mode. |
| mbed_official | 579:53297373a894 | 597 | * |
| mbed_official | 579:53297373a894 | 598 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 579:53297373a894 | 599 | * \param[in] top_value New timer TOP value to set |
| mbed_official | 579:53297373a894 | 600 | * |
| mbed_official | 579:53297373a894 | 601 | * \return Status of the TOP set procedure. |
| mbed_official | 579:53297373a894 | 602 | * |
| mbed_official | 579:53297373a894 | 603 | * \retval STATUS_OK The timer TOP value was updated successfully |
| mbed_official | 579:53297373a894 | 604 | * \retval STATUS_ERR_INVALID_ARG The configured TC module counter size in the |
| mbed_official | 579:53297373a894 | 605 | * module instance is invalid. |
| mbed_official | 579:53297373a894 | 606 | */ |
| mbed_official | 579:53297373a894 | 607 | enum status_code tc_set_top_value ( |
| mbed_official | 579:53297373a894 | 608 | const struct tc_module *const module_inst, |
| mbed_official | 579:53297373a894 | 609 | const uint32_t top_value) |
| mbed_official | 579:53297373a894 | 610 | { |
| mbed_official | 579:53297373a894 | 611 | Assert(module_inst); |
| mbed_official | 579:53297373a894 | 612 | Assert(module_inst->hw); |
| mbed_official | 579:53297373a894 | 613 | Assert(top_value); |
| mbed_official | 579:53297373a894 | 614 | |
| mbed_official | 579:53297373a894 | 615 | Tc *const tc_module = module_inst->hw; |
| mbed_official | 579:53297373a894 | 616 | |
| mbed_official | 579:53297373a894 | 617 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 579:53297373a894 | 618 | /* Wait for sync */ |
| mbed_official | 579:53297373a894 | 619 | } |
| mbed_official | 579:53297373a894 | 620 | |
| mbed_official | 579:53297373a894 | 621 | switch (module_inst->counter_size) { |
| mbed_official | 579:53297373a894 | 622 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 579:53297373a894 | 623 | tc_module->COUNT8.PER.reg = (uint8_t)top_value; |
| mbed_official | 579:53297373a894 | 624 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 625 | |
| mbed_official | 579:53297373a894 | 626 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 579:53297373a894 | 627 | tc_module->COUNT16.CC[0].reg = (uint16_t)top_value; |
| mbed_official | 579:53297373a894 | 628 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 629 | |
| mbed_official | 579:53297373a894 | 630 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 579:53297373a894 | 631 | tc_module->COUNT32.CC[0].reg = (uint32_t)top_value; |
| mbed_official | 579:53297373a894 | 632 | return STATUS_OK; |
| mbed_official | 579:53297373a894 | 633 | |
| mbed_official | 579:53297373a894 | 634 | default: |
| mbed_official | 579:53297373a894 | 635 | Assert(false); |
| mbed_official | 579:53297373a894 | 636 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 579:53297373a894 | 637 | } |
| mbed_official | 579:53297373a894 | 638 | } |