Sergey Solodunov
mbed library sources. Supersedes mbed-src.
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mbed official
targets/hal/TARGET_Atmel/TARGET_SAM_CortexM0P/drivers/tc/TARGET_SAML21/tc.c@144:423e1876dc07, 2016-08-02 (annotated)
- Committer:
- screamer
- Date:
- Tue Aug 02 14:07:36 2016 +0000
- Revision:
- 144:423e1876dc07
- Parent:
- 18:da299f395b9e
Added targets.json file for the supported targets in the release
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| mbed_official | 18:da299f395b9e | 1 | /** |
| mbed_official | 18:da299f395b9e | 2 | * \file |
| mbed_official | 18:da299f395b9e | 3 | * |
| mbed_official | 18:da299f395b9e | 4 | * \brief SAM TC - Timer Counter Driver |
| mbed_official | 18:da299f395b9e | 5 | * |
| mbed_official | 18:da299f395b9e | 6 | * Copyright (C) 2014-2015 Atmel Corporation. All rights reserved. |
| mbed_official | 18:da299f395b9e | 7 | * |
| mbed_official | 18:da299f395b9e | 8 | * \asf_license_start |
| mbed_official | 18:da299f395b9e | 9 | * |
| mbed_official | 18:da299f395b9e | 10 | * \page License |
| mbed_official | 18:da299f395b9e | 11 | * |
| mbed_official | 18:da299f395b9e | 12 | * Redistribution and use in source and binary forms, with or without |
| mbed_official | 18:da299f395b9e | 13 | * modification, are permitted provided that the following conditions are met: |
| mbed_official | 18:da299f395b9e | 14 | * |
| mbed_official | 18:da299f395b9e | 15 | * 1. Redistributions of source code must retain the above copyright notice, |
| mbed_official | 18:da299f395b9e | 16 | * this list of conditions and the following disclaimer. |
| mbed_official | 18:da299f395b9e | 17 | * |
| mbed_official | 18:da299f395b9e | 18 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| mbed_official | 18:da299f395b9e | 19 | * this list of conditions and the following disclaimer in the documentation |
| mbed_official | 18:da299f395b9e | 20 | * and/or other materials provided with the distribution. |
| mbed_official | 18:da299f395b9e | 21 | * |
| mbed_official | 18:da299f395b9e | 22 | * 3. The name of Atmel may not be used to endorse or promote products derived |
| mbed_official | 18:da299f395b9e | 23 | * from this software without specific prior written permission. |
| mbed_official | 18:da299f395b9e | 24 | * |
| mbed_official | 18:da299f395b9e | 25 | * 4. This software may only be redistributed and used in connection with an |
| mbed_official | 18:da299f395b9e | 26 | * Atmel microcontroller product. |
| mbed_official | 18:da299f395b9e | 27 | * |
| mbed_official | 18:da299f395b9e | 28 | * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED |
| mbed_official | 18:da299f395b9e | 29 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| mbed_official | 18:da299f395b9e | 30 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE |
| mbed_official | 18:da299f395b9e | 31 | * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR |
| mbed_official | 18:da299f395b9e | 32 | * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| mbed_official | 18:da299f395b9e | 33 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| mbed_official | 18:da299f395b9e | 34 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| mbed_official | 18:da299f395b9e | 35 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| mbed_official | 18:da299f395b9e | 36 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
| mbed_official | 18:da299f395b9e | 37 | * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| mbed_official | 18:da299f395b9e | 38 | * POSSIBILITY OF SUCH DAMAGE. |
| mbed_official | 18:da299f395b9e | 39 | * |
| mbed_official | 18:da299f395b9e | 40 | * \asf_license_stop |
| mbed_official | 18:da299f395b9e | 41 | * |
| mbed_official | 18:da299f395b9e | 42 | */ |
| mbed_official | 18:da299f395b9e | 43 | /* |
| mbed_official | 18:da299f395b9e | 44 | * Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a> |
| mbed_official | 18:da299f395b9e | 45 | */ |
| mbed_official | 18:da299f395b9e | 46 | |
| mbed_official | 18:da299f395b9e | 47 | #include "tc.h" |
| mbed_official | 18:da299f395b9e | 48 | |
| mbed_official | 18:da299f395b9e | 49 | #if TC_ASYNC == true |
| mbed_official | 18:da299f395b9e | 50 | # include "tc_interrupt.h" |
| mbed_official | 18:da299f395b9e | 51 | # include <system_interrupt.h> |
| mbed_official | 18:da299f395b9e | 52 | #endif |
| mbed_official | 18:da299f395b9e | 53 | |
| mbed_official | 18:da299f395b9e | 54 | /** |
| mbed_official | 18:da299f395b9e | 55 | * \internal Find the index of given TC module instance. |
| mbed_official | 18:da299f395b9e | 56 | * |
| mbed_official | 18:da299f395b9e | 57 | * \param[in] TC module instance pointer. |
| mbed_official | 18:da299f395b9e | 58 | * |
| mbed_official | 18:da299f395b9e | 59 | * \return Index of the given TC module instance. |
| mbed_official | 18:da299f395b9e | 60 | */ |
| mbed_official | 18:da299f395b9e | 61 | uint8_t _tc_get_inst_index( |
| mbed_official | 18:da299f395b9e | 62 | Tc *const hw) |
| mbed_official | 18:da299f395b9e | 63 | { |
| mbed_official | 18:da299f395b9e | 64 | /* List of available TC modules. */ |
| mbed_official | 18:da299f395b9e | 65 | Tc *const tc_modules[TC_INST_NUM] = TC_INSTS; |
| mbed_official | 18:da299f395b9e | 66 | |
| mbed_official | 18:da299f395b9e | 67 | /* Find index for TC instance. */ |
| mbed_official | 18:da299f395b9e | 68 | for (uint32_t i = 0; i < TC_INST_NUM; i++) { |
| mbed_official | 18:da299f395b9e | 69 | if (hw == tc_modules[i]) { |
| mbed_official | 18:da299f395b9e | 70 | return i; |
| mbed_official | 18:da299f395b9e | 71 | } |
| mbed_official | 18:da299f395b9e | 72 | } |
| mbed_official | 18:da299f395b9e | 73 | |
| mbed_official | 18:da299f395b9e | 74 | /* Invalid data given. */ |
| mbed_official | 18:da299f395b9e | 75 | Assert(false); |
| mbed_official | 18:da299f395b9e | 76 | return 0; |
| mbed_official | 18:da299f395b9e | 77 | } |
| mbed_official | 18:da299f395b9e | 78 | |
| mbed_official | 18:da299f395b9e | 79 | |
| mbed_official | 18:da299f395b9e | 80 | /** |
| mbed_official | 18:da299f395b9e | 81 | * \brief Initializes a hardware TC module instance. |
| mbed_official | 18:da299f395b9e | 82 | * |
| mbed_official | 18:da299f395b9e | 83 | * Enables the clock and initializes the TC module, based on the given |
| mbed_official | 18:da299f395b9e | 84 | * configuration values. |
| mbed_official | 18:da299f395b9e | 85 | * |
| mbed_official | 18:da299f395b9e | 86 | * \param[in,out] module_inst Pointer to the software module instance struct |
| mbed_official | 18:da299f395b9e | 87 | * \param[in] hw Pointer to the TC hardware module |
| mbed_official | 18:da299f395b9e | 88 | * \param[in] config Pointer to the TC configuration options struct |
| mbed_official | 18:da299f395b9e | 89 | * |
| mbed_official | 18:da299f395b9e | 90 | * \return Status of the initialization procedure. |
| mbed_official | 18:da299f395b9e | 91 | * |
| mbed_official | 18:da299f395b9e | 92 | * \retval STATUS_OK The module was initialized successfully |
| mbed_official | 18:da299f395b9e | 93 | * \retval STATUS_BUSY Hardware module was busy when the |
| mbed_official | 18:da299f395b9e | 94 | * initialization procedure was attempted |
| mbed_official | 18:da299f395b9e | 95 | * \retval STATUS_INVALID_ARG An invalid configuration option or argument |
| mbed_official | 18:da299f395b9e | 96 | * was supplied |
| mbed_official | 18:da299f395b9e | 97 | * \retval STATUS_ERR_DENIED Hardware module was already enabled, or the |
| mbed_official | 18:da299f395b9e | 98 | * hardware module is configured in 32-bit |
| mbed_official | 18:da299f395b9e | 99 | * slave mode |
| mbed_official | 18:da299f395b9e | 100 | */ |
| mbed_official | 18:da299f395b9e | 101 | enum status_code tc_init( |
| mbed_official | 18:da299f395b9e | 102 | struct tc_module *const module_inst, |
| mbed_official | 18:da299f395b9e | 103 | Tc *const hw, |
| mbed_official | 18:da299f395b9e | 104 | const struct tc_config *const config) |
| mbed_official | 18:da299f395b9e | 105 | { |
| mbed_official | 18:da299f395b9e | 106 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 107 | Assert(hw); |
| mbed_official | 18:da299f395b9e | 108 | Assert(module_inst); |
| mbed_official | 18:da299f395b9e | 109 | Assert(config); |
| mbed_official | 18:da299f395b9e | 110 | |
| mbed_official | 18:da299f395b9e | 111 | /* Temporary variable to hold all updates to the CTRLA |
| mbed_official | 18:da299f395b9e | 112 | * register before they are written to it */ |
| mbed_official | 18:da299f395b9e | 113 | uint32_t ctrla_tmp = 0; |
| mbed_official | 18:da299f395b9e | 114 | /* Temporary variable to hold all updates to the CTRLBSET |
| mbed_official | 18:da299f395b9e | 115 | * register before they are written to it */ |
| mbed_official | 18:da299f395b9e | 116 | uint8_t ctrlbset_tmp = 0; |
| mbed_official | 18:da299f395b9e | 117 | /* Temporary variable to hold TC instance number */ |
| mbed_official | 18:da299f395b9e | 118 | uint8_t instance = _tc_get_inst_index(hw); |
| mbed_official | 18:da299f395b9e | 119 | |
| mbed_official | 18:da299f395b9e | 120 | #if (SAMC20) || (SAMC21) |
| mbed_official | 18:da299f395b9e | 121 | /* Array of GLCK ID for different TC instances */ |
| mbed_official | 18:da299f395b9e | 122 | uint8_t inst_gclk_id[] = {TC0_GCLK_ID, TC1_GCLK_ID, TC2_GCLK_ID, TC3_GCLK_ID, TC4_GCLK_ID}; |
| mbed_official | 18:da299f395b9e | 123 | /* Array of MCLK APB mask bit position for different TC instances */ |
| mbed_official | 18:da299f395b9e | 124 | uint32_t inst_mclk_apbmask[] = {SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_TC0, |
| mbed_official | 18:da299f395b9e | 125 | SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_TC1, |
| mbed_official | 18:da299f395b9e | 126 | SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_TC2, |
| mbed_official | 18:da299f395b9e | 127 | SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_TC3, |
| mbed_official | 18:da299f395b9e | 128 | SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_TC4 |
| mbed_official | 18:da299f395b9e | 129 | }; |
| mbed_official | 18:da299f395b9e | 130 | #elif (SAML21J) |
| mbed_official | 18:da299f395b9e | 131 | /* Array of GLCK ID for different TC instances */ |
| mbed_official | 18:da299f395b9e | 132 | uint8_t inst_gclk_id[] = {TC0_GCLK_ID, TC1_GCLK_ID, TC2_GCLK_ID, TC3_GCLK_ID, TC4_GCLK_ID}; |
| mbed_official | 18:da299f395b9e | 133 | /* Array of MCLK APB mask bit position for different TC instances */ |
| mbed_official | 18:da299f395b9e | 134 | uint32_t inst_mclk_apbmask[] = {SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_TC0, |
| mbed_official | 18:da299f395b9e | 135 | SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_TC1, |
| mbed_official | 18:da299f395b9e | 136 | SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_TC2, |
| mbed_official | 18:da299f395b9e | 137 | SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_TC3, |
| mbed_official | 18:da299f395b9e | 138 | SYSTEM_CLOCK_APB_APBD, MCLK_APBDMASK_TC4 |
| mbed_official | 18:da299f395b9e | 139 | }; |
| mbed_official | 18:da299f395b9e | 140 | #else |
| mbed_official | 18:da299f395b9e | 141 | /* Array of GLCK ID for different TC instances */ |
| mbed_official | 18:da299f395b9e | 142 | uint8_t inst_gclk_id[] = {TC0_GCLK_ID, TC1_GCLK_ID, TC4_GCLK_ID}; |
| mbed_official | 18:da299f395b9e | 143 | /* Array of PM APB mask bit position for different TC instances */ |
| mbed_official | 18:da299f395b9e | 144 | uint32_t inst_mclk_apbmask[] = {SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_TC0, |
| mbed_official | 18:da299f395b9e | 145 | SYSTEM_CLOCK_APB_APBC, MCLK_APBCMASK_TC1, |
| mbed_official | 18:da299f395b9e | 146 | SYSTEM_CLOCK_APB_APBD, MCLK_APBDMASK_TC4 |
| mbed_official | 18:da299f395b9e | 147 | }; |
| mbed_official | 18:da299f395b9e | 148 | #endif |
| mbed_official | 18:da299f395b9e | 149 | |
| mbed_official | 18:da299f395b9e | 150 | struct system_pinmux_config pin_config; |
| mbed_official | 18:da299f395b9e | 151 | struct system_gclk_chan_config gclk_chan_config; |
| mbed_official | 18:da299f395b9e | 152 | |
| mbed_official | 18:da299f395b9e | 153 | #if TC_ASYNC == true |
| mbed_official | 18:da299f395b9e | 154 | /* Initialize parameters */ |
| mbed_official | 18:da299f395b9e | 155 | for (uint8_t i = 0; i < TC_CALLBACK_N; i++) { |
| mbed_official | 18:da299f395b9e | 156 | module_inst->callback[i] = NULL; |
| mbed_official | 18:da299f395b9e | 157 | } |
| mbed_official | 18:da299f395b9e | 158 | module_inst->register_callback_mask = 0x00; |
| mbed_official | 18:da299f395b9e | 159 | module_inst->enable_callback_mask = 0x00; |
| mbed_official | 18:da299f395b9e | 160 | |
| mbed_official | 18:da299f395b9e | 161 | /* Register this instance for callbacks*/ |
| mbed_official | 18:da299f395b9e | 162 | _tc_instances[instance] = module_inst; |
| mbed_official | 18:da299f395b9e | 163 | #endif |
| mbed_official | 18:da299f395b9e | 164 | |
| mbed_official | 18:da299f395b9e | 165 | /* Associate the given device instance with the hardware module */ |
| mbed_official | 18:da299f395b9e | 166 | module_inst->hw = hw; |
| mbed_official | 18:da299f395b9e | 167 | |
| mbed_official | 18:da299f395b9e | 168 | module_inst->double_buffering_enabled = config->double_buffering_enabled; |
| mbed_official | 18:da299f395b9e | 169 | |
| mbed_official | 18:da299f395b9e | 170 | /* Check if odd numbered TC modules are being configured in 32-bit |
| mbed_official | 18:da299f395b9e | 171 | * counter size. Only even numbered counters are allowed to be |
| mbed_official | 18:da299f395b9e | 172 | * configured in 32-bit counter size. |
| mbed_official | 18:da299f395b9e | 173 | */ |
| mbed_official | 18:da299f395b9e | 174 | if ((config->counter_size == TC_COUNTER_SIZE_32BIT) && |
| mbed_official | 18:da299f395b9e | 175 | ((instance + TC_INSTANCE_OFFSET) & 0x01)) { |
| mbed_official | 18:da299f395b9e | 176 | Assert(false); |
| mbed_official | 18:da299f395b9e | 177 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 178 | } |
| mbed_official | 18:da299f395b9e | 179 | |
| mbed_official | 18:da299f395b9e | 180 | /* Make the counter size variable in the module_inst struct reflect |
| mbed_official | 18:da299f395b9e | 181 | * the counter size in the module |
| mbed_official | 18:da299f395b9e | 182 | */ |
| mbed_official | 18:da299f395b9e | 183 | module_inst->counter_size = config->counter_size; |
| mbed_official | 18:da299f395b9e | 184 | |
| mbed_official | 18:da299f395b9e | 185 | if (hw->COUNT8.CTRLA.reg & TC_CTRLA_SWRST) { |
| mbed_official | 18:da299f395b9e | 186 | /* We are in the middle of a reset. Abort. */ |
| mbed_official | 18:da299f395b9e | 187 | return STATUS_BUSY; |
| mbed_official | 18:da299f395b9e | 188 | } |
| mbed_official | 18:da299f395b9e | 189 | |
| mbed_official | 18:da299f395b9e | 190 | if (hw->COUNT8.STATUS.reg & TC_STATUS_SLAVE) { |
| mbed_official | 18:da299f395b9e | 191 | /* Module is used as a slave */ |
| mbed_official | 18:da299f395b9e | 192 | return STATUS_ERR_DENIED; |
| mbed_official | 18:da299f395b9e | 193 | } |
| mbed_official | 18:da299f395b9e | 194 | |
| mbed_official | 18:da299f395b9e | 195 | if (hw->COUNT8.CTRLA.reg & TC_CTRLA_ENABLE) { |
| mbed_official | 18:da299f395b9e | 196 | /* Module must be disabled before initialization. Abort. */ |
| mbed_official | 18:da299f395b9e | 197 | return STATUS_ERR_DENIED; |
| mbed_official | 18:da299f395b9e | 198 | } |
| mbed_official | 18:da299f395b9e | 199 | |
| mbed_official | 18:da299f395b9e | 200 | /* Set up the TC PWM out pin for channel 0 */ |
| mbed_official | 18:da299f395b9e | 201 | if (config->pwm_channel[0].enabled) { |
| mbed_official | 18:da299f395b9e | 202 | system_pinmux_get_config_defaults(&pin_config); |
| mbed_official | 18:da299f395b9e | 203 | pin_config.mux_position = config->pwm_channel[0].pin_mux; |
| mbed_official | 18:da299f395b9e | 204 | pin_config.direction = SYSTEM_PINMUX_PIN_DIR_OUTPUT; |
| mbed_official | 18:da299f395b9e | 205 | system_pinmux_pin_set_config( |
| mbed_official | 18:da299f395b9e | 206 | config->pwm_channel[0].pin_out, &pin_config); |
| mbed_official | 18:da299f395b9e | 207 | } |
| mbed_official | 18:da299f395b9e | 208 | |
| mbed_official | 18:da299f395b9e | 209 | /* Set up the TC PWM out pin for channel 1 */ |
| mbed_official | 18:da299f395b9e | 210 | if (config->pwm_channel[1].enabled) { |
| mbed_official | 18:da299f395b9e | 211 | system_pinmux_get_config_defaults(&pin_config); |
| mbed_official | 18:da299f395b9e | 212 | pin_config.mux_position = config->pwm_channel[1].pin_mux; |
| mbed_official | 18:da299f395b9e | 213 | pin_config.direction = SYSTEM_PINMUX_PIN_DIR_OUTPUT; |
| mbed_official | 18:da299f395b9e | 214 | system_pinmux_pin_set_config( |
| mbed_official | 18:da299f395b9e | 215 | config->pwm_channel[1].pin_out, &pin_config); |
| mbed_official | 18:da299f395b9e | 216 | } |
| mbed_official | 18:da299f395b9e | 217 | |
| mbed_official | 18:da299f395b9e | 218 | /* Enable the user interface clock in the MCLK */ |
| mbed_official | 18:da299f395b9e | 219 | system_apb_clock_set_mask((enum system_clock_apb_bus)inst_mclk_apbmask[instance*2], |
| mbed_official | 18:da299f395b9e | 220 | inst_mclk_apbmask[2*instance+1]); |
| mbed_official | 18:da299f395b9e | 221 | |
| mbed_official | 18:da299f395b9e | 222 | /* Enable the slave counter if counter_size is 32-bit */ |
| mbed_official | 18:da299f395b9e | 223 | if ((config->counter_size == TC_COUNTER_SIZE_32BIT) && (instance+1 < TC_INST_NUM)) { |
| mbed_official | 18:da299f395b9e | 224 | /* Enable the user interface clock in the MCLK */ |
| mbed_official | 18:da299f395b9e | 225 | system_apb_clock_set_mask((enum system_clock_apb_bus)inst_mclk_apbmask[instance*2+1], |
| mbed_official | 18:da299f395b9e | 226 | inst_mclk_apbmask[2*instance+2]); |
| mbed_official | 18:da299f395b9e | 227 | } |
| mbed_official | 18:da299f395b9e | 228 | |
| mbed_official | 18:da299f395b9e | 229 | |
| mbed_official | 18:da299f395b9e | 230 | /* Setup clock for module */ |
| mbed_official | 18:da299f395b9e | 231 | system_gclk_chan_get_config_defaults(&gclk_chan_config); |
| mbed_official | 18:da299f395b9e | 232 | gclk_chan_config.source_generator = config->clock_source; |
| mbed_official | 18:da299f395b9e | 233 | system_gclk_chan_set_config(inst_gclk_id[instance], &gclk_chan_config); |
| mbed_official | 18:da299f395b9e | 234 | system_gclk_chan_enable(inst_gclk_id[instance]); |
| mbed_official | 18:da299f395b9e | 235 | |
| mbed_official | 18:da299f395b9e | 236 | /* Set ctrla register */ |
| mbed_official | 18:da299f395b9e | 237 | ctrla_tmp = |
| mbed_official | 18:da299f395b9e | 238 | (uint32_t)config->counter_size | |
| mbed_official | 18:da299f395b9e | 239 | (uint32_t)config->reload_action | |
| mbed_official | 18:da299f395b9e | 240 | (uint32_t)config->clock_prescaler; |
| mbed_official | 18:da299f395b9e | 241 | |
| mbed_official | 18:da299f395b9e | 242 | for (uint8_t i = 0; i < NUMBER_OF_COMPARE_CAPTURE_CHANNELS; i++) { |
| mbed_official | 18:da299f395b9e | 243 | if (config->enable_capture_on_channel[i] == true) { |
| mbed_official | 18:da299f395b9e | 244 | ctrla_tmp |= (TC_CTRLA_CAPTEN(1) << i); |
| mbed_official | 18:da299f395b9e | 245 | } |
| mbed_official | 18:da299f395b9e | 246 | } |
| mbed_official | 18:da299f395b9e | 247 | |
| mbed_official | 18:da299f395b9e | 248 | for (uint8_t i = 0; i < NUMBER_OF_COMPARE_CAPTURE_CHANNELS; i++) { |
| mbed_official | 18:da299f395b9e | 249 | if (config->enable_capture_on_IO[i] == true) { |
| mbed_official | 18:da299f395b9e | 250 | ctrla_tmp |= (TC_CTRLA_COPEN(1) << i); |
| mbed_official | 18:da299f395b9e | 251 | } |
| mbed_official | 18:da299f395b9e | 252 | } |
| mbed_official | 18:da299f395b9e | 253 | |
| mbed_official | 18:da299f395b9e | 254 | ctrla_tmp |= (config->run_in_standby << TC_CTRLA_RUNSTDBY_Pos) |
| mbed_official | 18:da299f395b9e | 255 | |(config->on_demand << TC_CTRLA_ONDEMAND_Pos); |
| mbed_official | 18:da299f395b9e | 256 | |
| mbed_official | 18:da299f395b9e | 257 | /* Write configuration to register */ |
| mbed_official | 18:da299f395b9e | 258 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 259 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 260 | } |
| mbed_official | 18:da299f395b9e | 261 | hw->COUNT8.CTRLA.reg = ctrla_tmp; |
| mbed_official | 18:da299f395b9e | 262 | |
| mbed_official | 18:da299f395b9e | 263 | /* Write configuration to register */ |
| mbed_official | 18:da299f395b9e | 264 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 265 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 266 | } |
| mbed_official | 18:da299f395b9e | 267 | hw->COUNT8.WAVE.reg = config->wave_generation; |
| mbed_official | 18:da299f395b9e | 268 | |
| mbed_official | 18:da299f395b9e | 269 | /* Set ctrlb register */ |
| mbed_official | 18:da299f395b9e | 270 | if (config->oneshot) { |
| mbed_official | 18:da299f395b9e | 271 | ctrlbset_tmp = TC_CTRLBSET_ONESHOT; |
| mbed_official | 18:da299f395b9e | 272 | } |
| mbed_official | 18:da299f395b9e | 273 | |
| mbed_official | 18:da299f395b9e | 274 | if (config->count_direction) { |
| mbed_official | 18:da299f395b9e | 275 | ctrlbset_tmp |= TC_CTRLBSET_DIR; |
| mbed_official | 18:da299f395b9e | 276 | } |
| mbed_official | 18:da299f395b9e | 277 | |
| mbed_official | 18:da299f395b9e | 278 | /* Clear old ctrlb configuration */ |
| mbed_official | 18:da299f395b9e | 279 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 280 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 281 | } |
| mbed_official | 18:da299f395b9e | 282 | hw->COUNT8.CTRLBCLR.reg = 0xFF; |
| mbed_official | 18:da299f395b9e | 283 | |
| mbed_official | 18:da299f395b9e | 284 | /* Check if we actually need to go into a wait state. */ |
| mbed_official | 18:da299f395b9e | 285 | if (ctrlbset_tmp) { |
| mbed_official | 18:da299f395b9e | 286 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 287 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 288 | } |
| mbed_official | 18:da299f395b9e | 289 | /* Write configuration to register */ |
| mbed_official | 18:da299f395b9e | 290 | hw->COUNT8.CTRLBSET.reg = ctrlbset_tmp; |
| mbed_official | 18:da299f395b9e | 291 | } |
| mbed_official | 18:da299f395b9e | 292 | |
| mbed_official | 18:da299f395b9e | 293 | /* Set drvvtrl register*/ |
| mbed_official | 18:da299f395b9e | 294 | hw->COUNT8.DRVCTRL.reg = config->waveform_invert_output; |
| mbed_official | 18:da299f395b9e | 295 | |
| mbed_official | 18:da299f395b9e | 296 | /* Write configuration to register */ |
| mbed_official | 18:da299f395b9e | 297 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 298 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 299 | } |
| mbed_official | 18:da299f395b9e | 300 | |
| mbed_official | 18:da299f395b9e | 301 | /* Switch for TC counter size */ |
| mbed_official | 18:da299f395b9e | 302 | switch (module_inst->counter_size) { |
| mbed_official | 18:da299f395b9e | 303 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 18:da299f395b9e | 304 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 305 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 306 | } |
| mbed_official | 18:da299f395b9e | 307 | |
| mbed_official | 18:da299f395b9e | 308 | hw->COUNT8.COUNT.reg = |
| mbed_official | 18:da299f395b9e | 309 | config->counter_8_bit.value; |
| mbed_official | 18:da299f395b9e | 310 | |
| mbed_official | 18:da299f395b9e | 311 | |
| mbed_official | 18:da299f395b9e | 312 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 313 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 314 | } |
| mbed_official | 18:da299f395b9e | 315 | |
| mbed_official | 18:da299f395b9e | 316 | hw->COUNT8.PER.reg = |
| mbed_official | 18:da299f395b9e | 317 | config->counter_8_bit.period; |
| mbed_official | 18:da299f395b9e | 318 | |
| mbed_official | 18:da299f395b9e | 319 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 320 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 321 | } |
| mbed_official | 18:da299f395b9e | 322 | |
| mbed_official | 18:da299f395b9e | 323 | hw->COUNT8.CC[0].reg = |
| mbed_official | 18:da299f395b9e | 324 | config->counter_8_bit.compare_capture_channel[0]; |
| mbed_official | 18:da299f395b9e | 325 | |
| mbed_official | 18:da299f395b9e | 326 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 327 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 328 | } |
| mbed_official | 18:da299f395b9e | 329 | |
| mbed_official | 18:da299f395b9e | 330 | hw->COUNT8.CC[1].reg = |
| mbed_official | 18:da299f395b9e | 331 | config->counter_8_bit.compare_capture_channel[1]; |
| mbed_official | 18:da299f395b9e | 332 | |
| mbed_official | 18:da299f395b9e | 333 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 334 | |
| mbed_official | 18:da299f395b9e | 335 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 18:da299f395b9e | 336 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 337 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 338 | } |
| mbed_official | 18:da299f395b9e | 339 | |
| mbed_official | 18:da299f395b9e | 340 | hw->COUNT16.COUNT.reg |
| mbed_official | 18:da299f395b9e | 341 | = config->counter_16_bit.value; |
| mbed_official | 18:da299f395b9e | 342 | |
| mbed_official | 18:da299f395b9e | 343 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 344 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 345 | } |
| mbed_official | 18:da299f395b9e | 346 | |
| mbed_official | 18:da299f395b9e | 347 | hw->COUNT16.CC[0].reg = |
| mbed_official | 18:da299f395b9e | 348 | config->counter_16_bit.compare_capture_channel[0]; |
| mbed_official | 18:da299f395b9e | 349 | |
| mbed_official | 18:da299f395b9e | 350 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 351 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 352 | } |
| mbed_official | 18:da299f395b9e | 353 | |
| mbed_official | 18:da299f395b9e | 354 | hw->COUNT16.CC[1].reg = |
| mbed_official | 18:da299f395b9e | 355 | config->counter_16_bit.compare_capture_channel[1]; |
| mbed_official | 18:da299f395b9e | 356 | |
| mbed_official | 18:da299f395b9e | 357 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 358 | |
| mbed_official | 18:da299f395b9e | 359 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 18:da299f395b9e | 360 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 361 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 362 | } |
| mbed_official | 18:da299f395b9e | 363 | |
| mbed_official | 18:da299f395b9e | 364 | hw->COUNT32.COUNT.reg |
| mbed_official | 18:da299f395b9e | 365 | = config->counter_32_bit.value; |
| mbed_official | 18:da299f395b9e | 366 | |
| mbed_official | 18:da299f395b9e | 367 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 368 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 369 | } |
| mbed_official | 18:da299f395b9e | 370 | |
| mbed_official | 18:da299f395b9e | 371 | hw->COUNT32.CC[0].reg = |
| mbed_official | 18:da299f395b9e | 372 | config->counter_32_bit.compare_capture_channel[0]; |
| mbed_official | 18:da299f395b9e | 373 | |
| mbed_official | 18:da299f395b9e | 374 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 375 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 376 | } |
| mbed_official | 18:da299f395b9e | 377 | |
| mbed_official | 18:da299f395b9e | 378 | hw->COUNT32.CC[1].reg = |
| mbed_official | 18:da299f395b9e | 379 | config->counter_32_bit.compare_capture_channel[1]; |
| mbed_official | 18:da299f395b9e | 380 | |
| mbed_official | 18:da299f395b9e | 381 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 382 | } |
| mbed_official | 18:da299f395b9e | 383 | |
| mbed_official | 18:da299f395b9e | 384 | Assert(false); |
| mbed_official | 18:da299f395b9e | 385 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 386 | } |
| mbed_official | 18:da299f395b9e | 387 | |
| mbed_official | 18:da299f395b9e | 388 | /** |
| mbed_official | 18:da299f395b9e | 389 | * \brief Sets TC module count value. |
| mbed_official | 18:da299f395b9e | 390 | * |
| mbed_official | 18:da299f395b9e | 391 | * Sets the current timer count value of a initialized TC module. The |
| mbed_official | 18:da299f395b9e | 392 | * specified TC module may be started or stopped. |
| mbed_official | 18:da299f395b9e | 393 | * |
| mbed_official | 18:da299f395b9e | 394 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 18:da299f395b9e | 395 | * \param[in] count New timer count value to set |
| mbed_official | 18:da299f395b9e | 396 | * |
| mbed_official | 18:da299f395b9e | 397 | * \return Status of the count update procedure. |
| mbed_official | 18:da299f395b9e | 398 | * |
| mbed_official | 18:da299f395b9e | 399 | * \retval STATUS_OK The timer count was updated successfully |
| mbed_official | 18:da299f395b9e | 400 | * \retval STATUS_ERR_INVALID_ARG An invalid timer counter size was specified |
| mbed_official | 18:da299f395b9e | 401 | */ |
| mbed_official | 18:da299f395b9e | 402 | enum status_code tc_set_count_value( |
| mbed_official | 18:da299f395b9e | 403 | const struct tc_module *const module_inst, |
| mbed_official | 18:da299f395b9e | 404 | const uint32_t count) |
| mbed_official | 18:da299f395b9e | 405 | { |
| mbed_official | 18:da299f395b9e | 406 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 407 | Assert(module_inst); |
| mbed_official | 18:da299f395b9e | 408 | Assert(module_inst->hw); |
| mbed_official | 18:da299f395b9e | 409 | |
| mbed_official | 18:da299f395b9e | 410 | /* Get a pointer to the module's hardware instance*/ |
| mbed_official | 18:da299f395b9e | 411 | Tc *const tc_module = module_inst->hw; |
| mbed_official | 18:da299f395b9e | 412 | |
| mbed_official | 18:da299f395b9e | 413 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 414 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 415 | } |
| mbed_official | 18:da299f395b9e | 416 | |
| mbed_official | 18:da299f395b9e | 417 | /* Write to based on the TC counter_size */ |
| mbed_official | 18:da299f395b9e | 418 | switch (module_inst->counter_size) { |
| mbed_official | 18:da299f395b9e | 419 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 18:da299f395b9e | 420 | tc_module->COUNT8.COUNT.reg = (uint8_t)count; |
| mbed_official | 18:da299f395b9e | 421 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 422 | |
| mbed_official | 18:da299f395b9e | 423 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 18:da299f395b9e | 424 | tc_module->COUNT16.COUNT.reg = (uint16_t)count; |
| mbed_official | 18:da299f395b9e | 425 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 426 | |
| mbed_official | 18:da299f395b9e | 427 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 18:da299f395b9e | 428 | tc_module->COUNT32.COUNT.reg = (uint32_t)count; |
| mbed_official | 18:da299f395b9e | 429 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 430 | |
| mbed_official | 18:da299f395b9e | 431 | default: |
| mbed_official | 18:da299f395b9e | 432 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 433 | } |
| mbed_official | 18:da299f395b9e | 434 | } |
| mbed_official | 18:da299f395b9e | 435 | |
| mbed_official | 18:da299f395b9e | 436 | /** |
| mbed_official | 18:da299f395b9e | 437 | * \brief Get TC module count value. |
| mbed_official | 18:da299f395b9e | 438 | * |
| mbed_official | 18:da299f395b9e | 439 | * Retrieves the current count value of a TC module. The specified TC module |
| mbed_official | 18:da299f395b9e | 440 | * may be started or stopped. |
| mbed_official | 18:da299f395b9e | 441 | * |
| mbed_official | 18:da299f395b9e | 442 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 18:da299f395b9e | 443 | * |
| mbed_official | 18:da299f395b9e | 444 | * \return Count value of the specified TC module. |
| mbed_official | 18:da299f395b9e | 445 | */ |
| mbed_official | 18:da299f395b9e | 446 | uint32_t tc_get_count_value( |
| mbed_official | 18:da299f395b9e | 447 | const struct tc_module *const module_inst) |
| mbed_official | 18:da299f395b9e | 448 | { |
| mbed_official | 18:da299f395b9e | 449 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 450 | Assert(module_inst); |
| mbed_official | 18:da299f395b9e | 451 | Assert(module_inst->hw); |
| mbed_official | 18:da299f395b9e | 452 | |
| mbed_official | 18:da299f395b9e | 453 | /* Read synchronization */ |
| mbed_official | 18:da299f395b9e | 454 | tc_sync_read_count(module_inst); |
| mbed_official | 18:da299f395b9e | 455 | |
| mbed_official | 18:da299f395b9e | 456 | /* Get a pointer to the module's hardware instance */ |
| mbed_official | 18:da299f395b9e | 457 | Tc *const tc_module = module_inst->hw; |
| mbed_official | 18:da299f395b9e | 458 | |
| mbed_official | 18:da299f395b9e | 459 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 460 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 461 | } |
| mbed_official | 18:da299f395b9e | 462 | |
| mbed_official | 18:da299f395b9e | 463 | /* Read from based on the TC counter size */ |
| mbed_official | 18:da299f395b9e | 464 | switch (module_inst->counter_size) { |
| mbed_official | 18:da299f395b9e | 465 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 18:da299f395b9e | 466 | return (uint32_t)tc_module->COUNT8.COUNT.reg; |
| mbed_official | 18:da299f395b9e | 467 | |
| mbed_official | 18:da299f395b9e | 468 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 18:da299f395b9e | 469 | return (uint32_t)tc_module->COUNT16.COUNT.reg; |
| mbed_official | 18:da299f395b9e | 470 | |
| mbed_official | 18:da299f395b9e | 471 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 18:da299f395b9e | 472 | return tc_module->COUNT32.COUNT.reg; |
| mbed_official | 18:da299f395b9e | 473 | } |
| mbed_official | 18:da299f395b9e | 474 | |
| mbed_official | 18:da299f395b9e | 475 | Assert(false); |
| mbed_official | 18:da299f395b9e | 476 | return 0; |
| mbed_official | 18:da299f395b9e | 477 | } |
| mbed_official | 18:da299f395b9e | 478 | |
| mbed_official | 18:da299f395b9e | 479 | /** |
| mbed_official | 18:da299f395b9e | 480 | * \brief Gets the TC module capture value. |
| mbed_official | 18:da299f395b9e | 481 | * |
| mbed_official | 18:da299f395b9e | 482 | * Retrieves the capture value in the indicated TC module capture channel. |
| mbed_official | 18:da299f395b9e | 483 | * |
| mbed_official | 18:da299f395b9e | 484 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 18:da299f395b9e | 485 | * \param[in] channel_index Index of the Compare Capture channel to read |
| mbed_official | 18:da299f395b9e | 486 | * |
| mbed_official | 18:da299f395b9e | 487 | * \return Capture value stored in the specified timer channel. |
| mbed_official | 18:da299f395b9e | 488 | */ |
| mbed_official | 18:da299f395b9e | 489 | uint32_t tc_get_capture_value( |
| mbed_official | 18:da299f395b9e | 490 | const struct tc_module *const module_inst, |
| mbed_official | 18:da299f395b9e | 491 | const enum tc_compare_capture_channel channel_index) |
| mbed_official | 18:da299f395b9e | 492 | { |
| mbed_official | 18:da299f395b9e | 493 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 494 | Assert(module_inst); |
| mbed_official | 18:da299f395b9e | 495 | Assert(module_inst->hw); |
| mbed_official | 18:da299f395b9e | 496 | |
| mbed_official | 18:da299f395b9e | 497 | /* Get a pointer to the module's hardware instance */ |
| mbed_official | 18:da299f395b9e | 498 | Tc *const tc_module = module_inst->hw; |
| mbed_official | 18:da299f395b9e | 499 | |
| mbed_official | 18:da299f395b9e | 500 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 501 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 502 | } |
| mbed_official | 18:da299f395b9e | 503 | |
| mbed_official | 18:da299f395b9e | 504 | /* Read out based on the TC counter size */ |
| mbed_official | 18:da299f395b9e | 505 | switch (module_inst->counter_size) { |
| mbed_official | 18:da299f395b9e | 506 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 18:da299f395b9e | 507 | if (channel_index < |
| mbed_official | 18:da299f395b9e | 508 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 18:da299f395b9e | 509 | return tc_module->COUNT8.CC[channel_index].reg; |
| mbed_official | 18:da299f395b9e | 510 | } |
| mbed_official | 18:da299f395b9e | 511 | |
| mbed_official | 18:da299f395b9e | 512 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 18:da299f395b9e | 513 | if (channel_index < |
| mbed_official | 18:da299f395b9e | 514 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 18:da299f395b9e | 515 | return tc_module->COUNT16.CC[channel_index].reg; |
| mbed_official | 18:da299f395b9e | 516 | } |
| mbed_official | 18:da299f395b9e | 517 | |
| mbed_official | 18:da299f395b9e | 518 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 18:da299f395b9e | 519 | if (channel_index < |
| mbed_official | 18:da299f395b9e | 520 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 18:da299f395b9e | 521 | return tc_module->COUNT32.CC[channel_index].reg; |
| mbed_official | 18:da299f395b9e | 522 | } |
| mbed_official | 18:da299f395b9e | 523 | } |
| mbed_official | 18:da299f395b9e | 524 | |
| mbed_official | 18:da299f395b9e | 525 | Assert(false); |
| mbed_official | 18:da299f395b9e | 526 | return 0; |
| mbed_official | 18:da299f395b9e | 527 | } |
| mbed_official | 18:da299f395b9e | 528 | |
| mbed_official | 18:da299f395b9e | 529 | /** |
| mbed_official | 18:da299f395b9e | 530 | * \brief Sets a TC module compare value. |
| mbed_official | 18:da299f395b9e | 531 | * |
| mbed_official | 18:da299f395b9e | 532 | * Writes a compare value to the given TC module compare/capture channel. |
| mbed_official | 18:da299f395b9e | 533 | * |
| mbed_official | 18:da299f395b9e | 534 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 18:da299f395b9e | 535 | * \param[in] channel_index Index of the compare channel to write to |
| mbed_official | 18:da299f395b9e | 536 | * \param[in] compare New compare value to set |
| mbed_official | 18:da299f395b9e | 537 | * |
| mbed_official | 18:da299f395b9e | 538 | * \return Status of the compare update procedure. |
| mbed_official | 18:da299f395b9e | 539 | * |
| mbed_official | 18:da299f395b9e | 540 | * \retval STATUS_OK The compare value was updated successfully |
| mbed_official | 18:da299f395b9e | 541 | * \retval STATUS_ERR_INVALID_ARG An invalid channel index was supplied |
| mbed_official | 18:da299f395b9e | 542 | */ |
| mbed_official | 18:da299f395b9e | 543 | enum status_code tc_set_compare_value( |
| mbed_official | 18:da299f395b9e | 544 | const struct tc_module *const module_inst, |
| mbed_official | 18:da299f395b9e | 545 | const enum tc_compare_capture_channel channel_index, |
| mbed_official | 18:da299f395b9e | 546 | const uint32_t compare) |
| mbed_official | 18:da299f395b9e | 547 | { |
| mbed_official | 18:da299f395b9e | 548 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 549 | Assert(module_inst); |
| mbed_official | 18:da299f395b9e | 550 | Assert(module_inst->hw); |
| mbed_official | 18:da299f395b9e | 551 | Assert(compare); |
| mbed_official | 18:da299f395b9e | 552 | |
| mbed_official | 18:da299f395b9e | 553 | /* Get a pointer to the module's hardware instance */ |
| mbed_official | 18:da299f395b9e | 554 | Tc *const tc_module = module_inst->hw; |
| mbed_official | 18:da299f395b9e | 555 | |
| mbed_official | 18:da299f395b9e | 556 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 557 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 558 | } |
| mbed_official | 18:da299f395b9e | 559 | |
| mbed_official | 18:da299f395b9e | 560 | /* Read out based on the TC counter size */ |
| mbed_official | 18:da299f395b9e | 561 | switch (module_inst->counter_size) { |
| mbed_official | 18:da299f395b9e | 562 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 18:da299f395b9e | 563 | if (channel_index < |
| mbed_official | 18:da299f395b9e | 564 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 18:da299f395b9e | 565 | if (module_inst->double_buffering_enabled) { |
| mbed_official | 18:da299f395b9e | 566 | tc_module->COUNT8.CCBUF[channel_index].reg = |
| mbed_official | 18:da299f395b9e | 567 | (uint8_t)compare; |
| mbed_official | 18:da299f395b9e | 568 | } else { |
| mbed_official | 18:da299f395b9e | 569 | tc_module->COUNT8.CC[channel_index].reg = |
| mbed_official | 18:da299f395b9e | 570 | (uint8_t)compare; |
| mbed_official | 18:da299f395b9e | 571 | } |
| mbed_official | 18:da299f395b9e | 572 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 573 | } |
| mbed_official | 18:da299f395b9e | 574 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 18:da299f395b9e | 575 | if (channel_index < |
| mbed_official | 18:da299f395b9e | 576 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 18:da299f395b9e | 577 | if (module_inst->double_buffering_enabled) { |
| mbed_official | 18:da299f395b9e | 578 | tc_module->COUNT16.CCBUF[channel_index].reg = |
| mbed_official | 18:da299f395b9e | 579 | (uint16_t)compare; |
| mbed_official | 18:da299f395b9e | 580 | } else { |
| mbed_official | 18:da299f395b9e | 581 | tc_module->COUNT16.CC[channel_index].reg = |
| mbed_official | 18:da299f395b9e | 582 | (uint16_t)compare; |
| mbed_official | 18:da299f395b9e | 583 | } |
| mbed_official | 18:da299f395b9e | 584 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 585 | } |
| mbed_official | 18:da299f395b9e | 586 | |
| mbed_official | 18:da299f395b9e | 587 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 18:da299f395b9e | 588 | if (channel_index < |
| mbed_official | 18:da299f395b9e | 589 | NUMBER_OF_COMPARE_CAPTURE_CHANNELS) { |
| mbed_official | 18:da299f395b9e | 590 | if (module_inst->double_buffering_enabled) { |
| mbed_official | 18:da299f395b9e | 591 | tc_module->COUNT32.CCBUF[channel_index].reg = |
| mbed_official | 18:da299f395b9e | 592 | (uint32_t)compare; |
| mbed_official | 18:da299f395b9e | 593 | } else { |
| mbed_official | 18:da299f395b9e | 594 | tc_module->COUNT32.CC[channel_index].reg = |
| mbed_official | 18:da299f395b9e | 595 | (uint32_t)compare; |
| mbed_official | 18:da299f395b9e | 596 | } |
| mbed_official | 18:da299f395b9e | 597 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 598 | } |
| mbed_official | 18:da299f395b9e | 599 | } |
| mbed_official | 18:da299f395b9e | 600 | |
| mbed_official | 18:da299f395b9e | 601 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 602 | } |
| mbed_official | 18:da299f395b9e | 603 | |
| mbed_official | 18:da299f395b9e | 604 | /** |
| mbed_official | 18:da299f395b9e | 605 | * \brief Resets the TC module. |
| mbed_official | 18:da299f395b9e | 606 | * |
| mbed_official | 18:da299f395b9e | 607 | * Resets the TC module, restoring all hardware module registers to their |
| mbed_official | 18:da299f395b9e | 608 | * default values and disabling the module. The TC module will not be |
| mbed_official | 18:da299f395b9e | 609 | * accessible while the reset is being performed. |
| mbed_official | 18:da299f395b9e | 610 | * |
| mbed_official | 18:da299f395b9e | 611 | * \note When resetting a 32-bit counter only the master TC module's instance |
| mbed_official | 18:da299f395b9e | 612 | * structure should be passed to the function. |
| mbed_official | 18:da299f395b9e | 613 | * |
| mbed_official | 18:da299f395b9e | 614 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 18:da299f395b9e | 615 | * |
| mbed_official | 18:da299f395b9e | 616 | * \return Status of the procedure. |
| mbed_official | 18:da299f395b9e | 617 | * \retval STATUS_OK The module was reset successfully |
| mbed_official | 18:da299f395b9e | 618 | * \retval STATUS_ERR_UNSUPPORTED_DEV A 32-bit slave TC module was passed to |
| mbed_official | 18:da299f395b9e | 619 | * the function. Only use reset on master |
| mbed_official | 18:da299f395b9e | 620 | * TC |
| mbed_official | 18:da299f395b9e | 621 | */ |
| mbed_official | 18:da299f395b9e | 622 | enum status_code tc_reset( |
| mbed_official | 18:da299f395b9e | 623 | const struct tc_module *const module_inst) |
| mbed_official | 18:da299f395b9e | 624 | { |
| mbed_official | 18:da299f395b9e | 625 | /* Sanity check arguments */ |
| mbed_official | 18:da299f395b9e | 626 | Assert(module_inst); |
| mbed_official | 18:da299f395b9e | 627 | Assert(module_inst->hw); |
| mbed_official | 18:da299f395b9e | 628 | |
| mbed_official | 18:da299f395b9e | 629 | /* Get a pointer to the module hardware instance */ |
| mbed_official | 18:da299f395b9e | 630 | TcCount8 *const tc_module = &(module_inst->hw->COUNT8); |
| mbed_official | 18:da299f395b9e | 631 | |
| mbed_official | 18:da299f395b9e | 632 | if (tc_module->STATUS.reg & TC_STATUS_SLAVE) { |
| mbed_official | 18:da299f395b9e | 633 | return STATUS_ERR_UNSUPPORTED_DEV; |
| mbed_official | 18:da299f395b9e | 634 | } |
| mbed_official | 18:da299f395b9e | 635 | |
| mbed_official | 18:da299f395b9e | 636 | /* Disable this module if it is running */ |
| mbed_official | 18:da299f395b9e | 637 | if (tc_module->CTRLA.reg & TC_CTRLA_ENABLE) { |
| mbed_official | 18:da299f395b9e | 638 | tc_disable(module_inst); |
| mbed_official | 18:da299f395b9e | 639 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 640 | /* wait while module is disabling */ |
| mbed_official | 18:da299f395b9e | 641 | } |
| mbed_official | 18:da299f395b9e | 642 | } |
| mbed_official | 18:da299f395b9e | 643 | |
| mbed_official | 18:da299f395b9e | 644 | /* Reset this TC module */ |
| mbed_official | 18:da299f395b9e | 645 | tc_module->CTRLA.reg |= TC_CTRLA_SWRST; |
| mbed_official | 18:da299f395b9e | 646 | |
| mbed_official | 18:da299f395b9e | 647 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 648 | } |
| mbed_official | 18:da299f395b9e | 649 | |
| mbed_official | 18:da299f395b9e | 650 | /** |
| mbed_official | 18:da299f395b9e | 651 | * \brief Set the timer TOP/period value. |
| mbed_official | 18:da299f395b9e | 652 | * |
| mbed_official | 18:da299f395b9e | 653 | * For 8-bit counter size this function writes the top value to the period |
| mbed_official | 18:da299f395b9e | 654 | * register. |
| mbed_official | 18:da299f395b9e | 655 | * |
| mbed_official | 18:da299f395b9e | 656 | * For 16- and 32-bit counter size this function writes the top value to |
| mbed_official | 18:da299f395b9e | 657 | * Capture Compare register 0. The value in this register can not be used for |
| mbed_official | 18:da299f395b9e | 658 | * any other purpose. |
| mbed_official | 18:da299f395b9e | 659 | * |
| mbed_official | 18:da299f395b9e | 660 | * \note This function is designed to be used in PWM or frequency |
| mbed_official | 18:da299f395b9e | 661 | * match modes only. When the counter is set to 16- or 32-bit counter |
| mbed_official | 18:da299f395b9e | 662 | * size. In 8-bit counter size it will always be possible to change the |
| mbed_official | 18:da299f395b9e | 663 | * top value even in normal mode. |
| mbed_official | 18:da299f395b9e | 664 | * |
| mbed_official | 18:da299f395b9e | 665 | * \param[in] module_inst Pointer to the software module instance struct |
| mbed_official | 18:da299f395b9e | 666 | * \param[in] top_value New timer TOP value to set |
| mbed_official | 18:da299f395b9e | 667 | * |
| mbed_official | 18:da299f395b9e | 668 | * \return Status of the TOP set procedure. |
| mbed_official | 18:da299f395b9e | 669 | * |
| mbed_official | 18:da299f395b9e | 670 | * \retval STATUS_OK The timer TOP value was updated successfully |
| mbed_official | 18:da299f395b9e | 671 | * \retval STATUS_ERR_INVALID_ARG The configured TC module counter size in the |
| mbed_official | 18:da299f395b9e | 672 | * module instance is invalid |
| mbed_official | 18:da299f395b9e | 673 | */ |
| mbed_official | 18:da299f395b9e | 674 | enum status_code tc_set_top_value ( |
| mbed_official | 18:da299f395b9e | 675 | const struct tc_module *const module_inst, |
| mbed_official | 18:da299f395b9e | 676 | const uint32_t top_value) |
| mbed_official | 18:da299f395b9e | 677 | { |
| mbed_official | 18:da299f395b9e | 678 | Assert(module_inst); |
| mbed_official | 18:da299f395b9e | 679 | Assert(module_inst->hw); |
| mbed_official | 18:da299f395b9e | 680 | Assert(top_value); |
| mbed_official | 18:da299f395b9e | 681 | |
| mbed_official | 18:da299f395b9e | 682 | Tc *const tc_module = module_inst->hw; |
| mbed_official | 18:da299f395b9e | 683 | |
| mbed_official | 18:da299f395b9e | 684 | while (tc_is_syncing(module_inst)) { |
| mbed_official | 18:da299f395b9e | 685 | /* Wait for sync */ |
| mbed_official | 18:da299f395b9e | 686 | } |
| mbed_official | 18:da299f395b9e | 687 | |
| mbed_official | 18:da299f395b9e | 688 | switch (module_inst->counter_size) { |
| mbed_official | 18:da299f395b9e | 689 | case TC_COUNTER_SIZE_8BIT: |
| mbed_official | 18:da299f395b9e | 690 | if (module_inst->double_buffering_enabled) { |
| mbed_official | 18:da299f395b9e | 691 | tc_module->COUNT8.PERBUF.reg = (uint8_t)top_value; |
| mbed_official | 18:da299f395b9e | 692 | } else { |
| mbed_official | 18:da299f395b9e | 693 | tc_module->COUNT8.PER.reg = (uint8_t)top_value; |
| mbed_official | 18:da299f395b9e | 694 | } |
| mbed_official | 18:da299f395b9e | 695 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 696 | |
| mbed_official | 18:da299f395b9e | 697 | case TC_COUNTER_SIZE_16BIT: |
| mbed_official | 18:da299f395b9e | 698 | if (module_inst->double_buffering_enabled) { |
| mbed_official | 18:da299f395b9e | 699 | tc_module->COUNT16.CCBUF[0].reg = (uint16_t)top_value; |
| mbed_official | 18:da299f395b9e | 700 | } else { |
| mbed_official | 18:da299f395b9e | 701 | tc_module->COUNT16.CC[0].reg = (uint16_t)top_value; |
| mbed_official | 18:da299f395b9e | 702 | } |
| mbed_official | 18:da299f395b9e | 703 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 704 | |
| mbed_official | 18:da299f395b9e | 705 | case TC_COUNTER_SIZE_32BIT: |
| mbed_official | 18:da299f395b9e | 706 | if (module_inst->double_buffering_enabled) { |
| mbed_official | 18:da299f395b9e | 707 | tc_module->COUNT32.CCBUF[0].reg = (uint32_t)top_value; |
| mbed_official | 18:da299f395b9e | 708 | } else { |
| mbed_official | 18:da299f395b9e | 709 | tc_module->COUNT32.CC[0].reg = (uint32_t)top_value; |
| mbed_official | 18:da299f395b9e | 710 | } |
| mbed_official | 18:da299f395b9e | 711 | return STATUS_OK; |
| mbed_official | 18:da299f395b9e | 712 | |
| mbed_official | 18:da299f395b9e | 713 | default: |
| mbed_official | 18:da299f395b9e | 714 | Assert(false); |
| mbed_official | 18:da299f395b9e | 715 | return STATUS_ERR_INVALID_ARG; |
| mbed_official | 18:da299f395b9e | 716 | } |
| mbed_official | 18:da299f395b9e | 717 | } |