Frequency counter library using GPS 1PPS signal and temperature controlled 50MHz Base clock. Ported from F411 Frequency Counter.
Dependents: Frequency_Cntr_1PPS_F746ZG
Fork of Frq_cuntr_full by
Please refer following.
/users/kenjiArai/notebook/frequency-counters/
frq_cuntr_full.cpp@1:102230f2879d, 2014-11-22 (annotated)
- Committer:
- kenjiArai
- Date:
- Sat Nov 22 23:02:39 2014 +0000
- Revision:
- 1:102230f2879d
- Parent:
- 0:bfdc6ed58a06
- Child:
- 2:194f82ad3041
Created library interface functions. Hardware related parts are almost done.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
kenjiArai | 0:bfdc6ed58a06 | 1 | /* |
kenjiArai | 1:102230f2879d | 2 | * mbed Library / Frequency Counter with GPS 1PPS Compensation |
kenjiArai | 0:bfdc6ed58a06 | 3 | * Frequency Counter Hardware relataed program |
kenjiArai | 1:102230f2879d | 4 | * Only for ST Nucleo F411RE |
kenjiArai | 0:bfdc6ed58a06 | 5 | * |
kenjiArai | 0:bfdc6ed58a06 | 6 | * Copyright (c) 2014 Kenji Arai / JH1PJL |
kenjiArai | 0:bfdc6ed58a06 | 7 | * http://www.page.sannet.ne.jp/kenjia/index.html |
kenjiArai | 0:bfdc6ed58a06 | 8 | * http://mbed.org/users/kenjiArai/ |
kenjiArai | 0:bfdc6ed58a06 | 9 | * Additional functions and modification |
kenjiArai | 0:bfdc6ed58a06 | 10 | * started: October 18th, 2014 |
kenjiArai | 1:102230f2879d | 11 | * Revised: Nobember 23rd, 2014 |
kenjiArai | 0:bfdc6ed58a06 | 12 | * |
kenjiArai | 0:bfdc6ed58a06 | 13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, |
kenjiArai | 0:bfdc6ed58a06 | 14 | * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE |
kenjiArai | 0:bfdc6ed58a06 | 15 | * AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
kenjiArai | 0:bfdc6ed58a06 | 16 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
kenjiArai | 0:bfdc6ed58a06 | 17 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
kenjiArai | 0:bfdc6ed58a06 | 18 | */ |
kenjiArai | 0:bfdc6ed58a06 | 19 | |
kenjiArai | 0:bfdc6ed58a06 | 20 | #include "frq_cuntr_full.h" |
kenjiArai | 0:bfdc6ed58a06 | 21 | |
kenjiArai | 0:bfdc6ed58a06 | 22 | #ifdef DEBUG |
kenjiArai | 0:bfdc6ed58a06 | 23 | Serial pcm(USBTX, USBRX); |
kenjiArai | 0:bfdc6ed58a06 | 24 | DigitalOut debug_led(LED1); |
kenjiArai | 0:bfdc6ed58a06 | 25 | #endif |
kenjiArai | 0:bfdc6ed58a06 | 26 | |
kenjiArai | 0:bfdc6ed58a06 | 27 | #ifdef DEBUG |
kenjiArai | 0:bfdc6ed58a06 | 28 | #define BAUD(x) pcm.baud(x) |
kenjiArai | 0:bfdc6ed58a06 | 29 | #define GETC(x) pcm.getc(x) |
kenjiArai | 0:bfdc6ed58a06 | 30 | #define PUTC(x) pcm.putc(x) |
kenjiArai | 0:bfdc6ed58a06 | 31 | #define PRINTF(...) pcm.printf(__VA_ARGS__) |
kenjiArai | 0:bfdc6ed58a06 | 32 | #define READABLE(x) pcm.readable(x) |
kenjiArai | 0:bfdc6ed58a06 | 33 | #else |
kenjiArai | 0:bfdc6ed58a06 | 34 | #define BAUD(x) {;} |
kenjiArai | 0:bfdc6ed58a06 | 35 | #define GETC(x) {;} |
kenjiArai | 0:bfdc6ed58a06 | 36 | #define PUTC(x) {;} |
kenjiArai | 0:bfdc6ed58a06 | 37 | #define PRINTF(...) {;} |
kenjiArai | 0:bfdc6ed58a06 | 38 | #define READABLE(x) {;} |
kenjiArai | 0:bfdc6ed58a06 | 39 | #endif |
kenjiArai | 0:bfdc6ed58a06 | 40 | |
kenjiArai | 0:bfdc6ed58a06 | 41 | namespace Frequency_counter |
kenjiArai | 0:bfdc6ed58a06 | 42 | { |
kenjiArai | 1:102230f2879d | 43 | // TIM2 OC |
kenjiArai | 1:102230f2879d | 44 | uint32_t oc_set_time0; |
kenjiArai | 1:102230f2879d | 45 | uint32_t oc_set_time1; |
kenjiArai | 1:102230f2879d | 46 | uint8_t new_gt_value; |
kenjiArai | 1:102230f2879d | 47 | uint32_t oc_hi_time; |
kenjiArai | 1:102230f2879d | 48 | uint32_t oc_lo_time; |
kenjiArai | 1:102230f2879d | 49 | // TIM2 IC |
kenjiArai | 1:102230f2879d | 50 | static uint8_t tim2_ready_flg; |
kenjiArai | 1:102230f2879d | 51 | static uint32_t tim2_cnt_data; |
kenjiArai | 1:102230f2879d | 52 | static uint32_t tim2_old_cnt_data; |
kenjiArai | 1:102230f2879d | 53 | // TIM3+4 IC |
kenjiArai | 1:102230f2879d | 54 | static uint8_t tim3p4_ready_flg; |
kenjiArai | 1:102230f2879d | 55 | static uint32_t tim3p4_cnt_data; |
kenjiArai | 1:102230f2879d | 56 | |
kenjiArai | 1:102230f2879d | 57 | //------------------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 58 | // Control Program |
kenjiArai | 1:102230f2879d | 59 | //------------------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 60 | // TIM2 IC2 Interrupt control |
kenjiArai | 1:102230f2879d | 61 | void irq_ic2_TIM2(void) |
kenjiArai | 1:102230f2879d | 62 | { |
kenjiArai | 1:102230f2879d | 63 | uint16_t reg; |
kenjiArai | 1:102230f2879d | 64 | reg = TIM2->SR; |
kenjiArai | 1:102230f2879d | 65 | if (reg & TIM_SR_CC2IF) { |
kenjiArai | 1:102230f2879d | 66 | TIM2->SR &= ~TIM_SR_CC2IF; // clear IC flag |
kenjiArai | 1:102230f2879d | 67 | tim2_old_cnt_data = tim2_cnt_data; |
kenjiArai | 1:102230f2879d | 68 | tim2_cnt_data = TIM2->CCR2; |
kenjiArai | 1:102230f2879d | 69 | tim2_ready_flg = 1; |
kenjiArai | 1:102230f2879d | 70 | } else if (reg & TIM_SR_CC3IF) { |
kenjiArai | 1:102230f2879d | 71 | TIM2->SR &= ~TIM_SR_CC3IF; // clear IC flag |
kenjiArai | 1:102230f2879d | 72 | if (GPIOB->IDR & 0x0400) { // Check PB10 status |
kenjiArai | 1:102230f2879d | 73 | TIM2->CCR3 = TIM2->CCR3 + oc_hi_time; |
kenjiArai | 1:102230f2879d | 74 | } else { |
kenjiArai | 1:102230f2879d | 75 | TIM2->CCR3 = TIM2->CCR3 + oc_lo_time; |
kenjiArai | 1:102230f2879d | 76 | if (new_gt_value) { |
kenjiArai | 1:102230f2879d | 77 | new_gt_value = 0; |
kenjiArai | 1:102230f2879d | 78 | oc_hi_time = oc_set_time0; |
kenjiArai | 1:102230f2879d | 79 | oc_lo_time = oc_set_time1; |
kenjiArai | 1:102230f2879d | 80 | } |
kenjiArai | 0:bfdc6ed58a06 | 81 | } |
kenjiArai | 0:bfdc6ed58a06 | 82 | #if defined(DEBUG) |
kenjiArai | 0:bfdc6ed58a06 | 83 | debug_led = !debug_led; |
kenjiArai | 0:bfdc6ed58a06 | 84 | #endif |
kenjiArai | 0:bfdc6ed58a06 | 85 | } |
kenjiArai | 1:102230f2879d | 86 | } |
kenjiArai | 1:102230f2879d | 87 | |
kenjiArai | 1:102230f2879d | 88 | // TIM3 IC2 Interrupt control (same signal connected to TIM4 IC1) |
kenjiArai | 1:102230f2879d | 89 | void irq_ic2_TIM3P4(void) |
kenjiArai | 1:102230f2879d | 90 | { |
kenjiArai | 1:102230f2879d | 91 | TIM3->SR &= ~TIM_SR_CC2IF; // clear IC flag |
kenjiArai | 1:102230f2879d | 92 | TIM4->SR &= ~TIM_SR_CC1IF; |
kenjiArai | 1:102230f2879d | 93 | tim3p4_cnt_data = (TIM4->CCR1 << 16) + TIM3->CCR2; |
kenjiArai | 1:102230f2879d | 94 | tim3p4_ready_flg = 1; |
kenjiArai | 0:bfdc6ed58a06 | 95 | #if defined(DEBUG) |
kenjiArai | 1:102230f2879d | 96 | debug_led = !debug_led; |
kenjiArai | 0:bfdc6ed58a06 | 97 | #endif |
kenjiArai | 1:102230f2879d | 98 | } |
kenjiArai | 1:102230f2879d | 99 | |
kenjiArai | 1:102230f2879d | 100 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 101 | // Frequency Counter |
kenjiArai | 1:102230f2879d | 102 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 103 | FRQ_CUNTR::FRQ_CUNTR(PinName f_in, double gt): _pin(f_in) |
kenjiArai | 1:102230f2879d | 104 | { |
kenjiArai | 1:102230f2879d | 105 | set_gate_time(gt); |
kenjiArai | 1:102230f2879d | 106 | initialize_Freq_counter(); |
kenjiArai | 1:102230f2879d | 107 | } |
kenjiArai | 1:102230f2879d | 108 | |
kenjiArai | 1:102230f2879d | 109 | // Set gate time |
kenjiArai | 1:102230f2879d | 110 | double FRQ_CUNTR::set_gate_time(double gt) |
kenjiArai | 1:102230f2879d | 111 | { |
kenjiArai | 1:102230f2879d | 112 | if (gt < 0.05) { |
kenjiArai | 1:102230f2879d | 113 | gate_time = 0.05; |
kenjiArai | 1:102230f2879d | 114 | } else if (gt > 60.0) { |
kenjiArai | 1:102230f2879d | 115 | gate_time = 60.0; |
kenjiArai | 1:102230f2879d | 116 | } else { |
kenjiArai | 1:102230f2879d | 117 | gate_time = gt; |
kenjiArai | 0:bfdc6ed58a06 | 118 | } |
kenjiArai | 1:102230f2879d | 119 | oc_set_time0 = CNT_FIX_BASE; |
kenjiArai | 1:102230f2879d | 120 | double gt_tmp0 = CNT_BASE * gate_time; |
kenjiArai | 1:102230f2879d | 121 | uint32_t gt_tmp1 = (uint32_t)gt_tmp0; |
kenjiArai | 1:102230f2879d | 122 | if ((gt_tmp0 - (double)gt_tmp1) >= 0.5) { |
kenjiArai | 1:102230f2879d | 123 | ++gt_tmp1; |
kenjiArai | 0:bfdc6ed58a06 | 124 | } |
kenjiArai | 1:102230f2879d | 125 | oc_set_time1 = gt_tmp1 - CNT_FIX_BASE; |
kenjiArai | 1:102230f2879d | 126 | new_gt_value = 1; |
kenjiArai | 1:102230f2879d | 127 | return gate_time; |
kenjiArai | 1:102230f2879d | 128 | } |
kenjiArai | 1:102230f2879d | 129 | |
kenjiArai | 1:102230f2879d | 130 | // Read new frequency data |
kenjiArai | 1:102230f2879d | 131 | uint32_t FRQ_CUNTR::read_freq_data(void) |
kenjiArai | 1:102230f2879d | 132 | { |
kenjiArai | 1:102230f2879d | 133 | old_cntr_tim3p4 = counter_tim3p4; |
kenjiArai | 1:102230f2879d | 134 | counter_tim3p4 = read_ic2_counter_TIM3P4(); |
kenjiArai | 1:102230f2879d | 135 | return (counter_tim3p4 - old_cntr_tim3p4); |
kenjiArai | 1:102230f2879d | 136 | } |
kenjiArai | 1:102230f2879d | 137 | |
kenjiArai | 1:102230f2879d | 138 | // Read status (new frequency data is available or not) |
kenjiArai | 1:102230f2879d | 139 | uint32_t FRQ_CUNTR::status_freq_update(void) |
kenjiArai | 1:102230f2879d | 140 | { |
kenjiArai | 1:102230f2879d | 141 | return check_ic2_status_TIM3P4(); |
kenjiArai | 1:102230f2879d | 142 | } |
kenjiArai | 1:102230f2879d | 143 | |
kenjiArai | 1:102230f2879d | 144 | // Read status (new 1PPS data is available or not) |
kenjiArai | 1:102230f2879d | 145 | uint32_t FRQ_CUNTR::status_1pps(void) |
kenjiArai | 1:102230f2879d | 146 | { |
kenjiArai | 1:102230f2879d | 147 | return check_ic2_status_TIM2(); |
kenjiArai | 1:102230f2879d | 148 | } |
kenjiArai | 1:102230f2879d | 149 | |
kenjiArai | 1:102230f2879d | 150 | // Read GPS 1PPS counter value |
kenjiArai | 1:102230f2879d | 151 | uint32_t FRQ_CUNTR::set_1PPS_data(void) |
kenjiArai | 1:102230f2879d | 152 | { |
kenjiArai | 1:102230f2879d | 153 | uint32_t diff = tim2_cnt_data - tim2_old_cnt_data; |
kenjiArai | 1:102230f2879d | 154 | if ((diff > CNT_UPPER) || (diff < CNT_LOWER)) { |
kenjiArai | 1:102230f2879d | 155 | return 0; |
kenjiArai | 1:102230f2879d | 156 | } else { |
kenjiArai | 1:102230f2879d | 157 | onepps_cnt[onepps_num] = diff; |
kenjiArai | 1:102230f2879d | 158 | if (++onepps_num >= CNT_BF_SIZE) { |
kenjiArai | 1:102230f2879d | 159 | onepps_num = 0; |
kenjiArai | 1:102230f2879d | 160 | onepps_buf_full = 1; |
kenjiArai | 0:bfdc6ed58a06 | 161 | } |
kenjiArai | 1:102230f2879d | 162 | onepps_newest = diff; |
kenjiArai | 1:102230f2879d | 163 | return diff; |
kenjiArai | 0:bfdc6ed58a06 | 164 | } |
kenjiArai | 1:102230f2879d | 165 | } |
kenjiArai | 1:102230f2879d | 166 | |
kenjiArai | 1:102230f2879d | 167 | // Avarage measued data GPS 1PPS by 50MHz Internal Clock |
kenjiArai | 1:102230f2879d | 168 | uint32_t FRQ_CUNTR::read_avarage_1pps(void) |
kenjiArai | 1:102230f2879d | 169 | { |
kenjiArai | 1:102230f2879d | 170 | uint64_t total = 0; |
kenjiArai | 1:102230f2879d | 171 | if (onepps_buf_full == 1) { |
kenjiArai | 1:102230f2879d | 172 | for (uint32_t i = 0; i < CNT_BF_SIZE; i++) { |
kenjiArai | 1:102230f2879d | 173 | total += (uint64_t)onepps_cnt[i]; |
kenjiArai | 0:bfdc6ed58a06 | 174 | } |
kenjiArai | 1:102230f2879d | 175 | onepps_cnt_avarage = total / CNT_BF_SIZE; |
kenjiArai | 1:102230f2879d | 176 | PRINTF("buf"); |
kenjiArai | 1:102230f2879d | 177 | } else { |
kenjiArai | 1:102230f2879d | 178 | for (uint32_t i = 0; i < onepps_num; i++) { |
kenjiArai | 1:102230f2879d | 179 | total += (uint64_t)onepps_cnt[i]; |
kenjiArai | 0:bfdc6ed58a06 | 180 | } |
kenjiArai | 1:102230f2879d | 181 | onepps_cnt_avarage = total / onepps_num; |
kenjiArai | 1:102230f2879d | 182 | PRINTF("not"); |
kenjiArai | 0:bfdc6ed58a06 | 183 | } |
kenjiArai | 1:102230f2879d | 184 | PRINTF(" full, num= %3d , 1PPS/new= %9d , ", onepps_num, onepps_newest); |
kenjiArai | 1:102230f2879d | 185 | return onepps_cnt_avarage; |
kenjiArai | 1:102230f2879d | 186 | } |
kenjiArai | 1:102230f2879d | 187 | |
kenjiArai | 1:102230f2879d | 188 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 189 | // TIM2 (32bit Counter + IC + OC) |
kenjiArai | 1:102230f2879d | 190 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 191 | // Read TIM2 captured counter value |
kenjiArai | 1:102230f2879d | 192 | uint32_t FRQ_CUNTR::read_ic2_counter_TIM2(void) |
kenjiArai | 1:102230f2879d | 193 | { |
kenjiArai | 1:102230f2879d | 194 | return tim2_cnt_data; // return TIM2->CCR2; |
kenjiArai | 1:102230f2879d | 195 | } |
kenjiArai | 1:102230f2879d | 196 | |
kenjiArai | 1:102230f2879d | 197 | // Check TIM2 IC2 status |
kenjiArai | 1:102230f2879d | 198 | uint32_t FRQ_CUNTR::check_ic2_status_TIM2(void) |
kenjiArai | 1:102230f2879d | 199 | { |
kenjiArai | 1:102230f2879d | 200 | if (tim2_ready_flg == 0) { |
kenjiArai | 1:102230f2879d | 201 | return 0; |
kenjiArai | 1:102230f2879d | 202 | } else { |
kenjiArai | 1:102230f2879d | 203 | tim2_ready_flg = 0; |
kenjiArai | 1:102230f2879d | 204 | set_1PPS_data(); |
kenjiArai | 1:102230f2879d | 205 | return 1; |
kenjiArai | 0:bfdc6ed58a06 | 206 | } |
kenjiArai | 1:102230f2879d | 207 | } |
kenjiArai | 1:102230f2879d | 208 | |
kenjiArai | 1:102230f2879d | 209 | // Check OC port status |
kenjiArai | 1:102230f2879d | 210 | uint8_t FRQ_CUNTR::read_oc_port_status(void) |
kenjiArai | 1:102230f2879d | 211 | { |
kenjiArai | 1:102230f2879d | 212 | uint32_t p = GPIOB->IDR; |
kenjiArai | 1:102230f2879d | 213 | if (p & 0x0400) { // Check PB10 status |
kenjiArai | 1:102230f2879d | 214 | return 1; |
kenjiArai | 1:102230f2879d | 215 | } else { |
kenjiArai | 1:102230f2879d | 216 | return 0; |
kenjiArai | 0:bfdc6ed58a06 | 217 | } |
kenjiArai | 1:102230f2879d | 218 | } |
kenjiArai | 1:102230f2879d | 219 | |
kenjiArai | 1:102230f2879d | 220 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 221 | // TIM3+TIM4 (32bit Counter + IC) |
kenjiArai | 1:102230f2879d | 222 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 223 | // Read TIM3+4(as 32bit) captured counter value |
kenjiArai | 1:102230f2879d | 224 | uint32_t FRQ_CUNTR::read_ic2_counter_TIM3P4(void) |
kenjiArai | 1:102230f2879d | 225 | { |
kenjiArai | 1:102230f2879d | 226 | return tim3p4_cnt_data; |
kenjiArai | 1:102230f2879d | 227 | } |
kenjiArai | 1:102230f2879d | 228 | |
kenjiArai | 1:102230f2879d | 229 | // Check TIM3 IC2 & TIM4 IC1 status |
kenjiArai | 1:102230f2879d | 230 | uint32_t FRQ_CUNTR::check_ic2_status_TIM3P4(void) |
kenjiArai | 1:102230f2879d | 231 | { |
kenjiArai | 1:102230f2879d | 232 | if (tim3p4_ready_flg == 0) { |
kenjiArai | 1:102230f2879d | 233 | return 0; |
kenjiArai | 1:102230f2879d | 234 | } else { |
kenjiArai | 1:102230f2879d | 235 | tim3p4_ready_flg = 0; |
kenjiArai | 1:102230f2879d | 236 | return 1; |
kenjiArai | 0:bfdc6ed58a06 | 237 | } |
kenjiArai | 1:102230f2879d | 238 | } |
kenjiArai | 1:102230f2879d | 239 | |
kenjiArai | 1:102230f2879d | 240 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 241 | // Frequency check for test purpose |
kenjiArai | 1:102230f2879d | 242 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 243 | // Read TIM2 Clock frequency |
kenjiArai | 1:102230f2879d | 244 | uint32_t FRQ_CUNTR::read_frequency_TIM2(float gate_time) |
kenjiArai | 1:102230f2879d | 245 | { |
kenjiArai | 1:102230f2879d | 246 | uint32_t freq = 0; |
kenjiArai | 1:102230f2879d | 247 | TIM2->CNT = 0; |
kenjiArai | 1:102230f2879d | 248 | wait(gate_time); // Gate time for count |
kenjiArai | 1:102230f2879d | 249 | freq = TIM2->CNT; // read counter |
kenjiArai | 1:102230f2879d | 250 | PRINTF("Clock freq.=%10d [Hz], gate= %4.2f [Sec]\r\n", freq, gate_time); |
kenjiArai | 1:102230f2879d | 251 | return freq; // return counter data |
kenjiArai | 1:102230f2879d | 252 | } |
kenjiArai | 1:102230f2879d | 253 | |
kenjiArai | 1:102230f2879d | 254 | // Read TIM3(+TIM4) Input frequency |
kenjiArai | 1:102230f2879d | 255 | uint32_t FRQ_CUNTR::read_frequency_TIM3P4(float gate_time) |
kenjiArai | 1:102230f2879d | 256 | { |
kenjiArai | 1:102230f2879d | 257 | uint32_t freq0 = 0; |
kenjiArai | 1:102230f2879d | 258 | uint32_t freq1 = 0; |
kenjiArai | 1:102230f2879d | 259 | TIM3->CNT = 0; |
kenjiArai | 1:102230f2879d | 260 | TIM4->CNT = 0; |
kenjiArai | 1:102230f2879d | 261 | TIM3->CNT = 0; |
kenjiArai | 1:102230f2879d | 262 | wait(gate_time); // Gate time for count |
kenjiArai | 1:102230f2879d | 263 | freq0 = TIM3->CNT; |
kenjiArai | 1:102230f2879d | 264 | freq1 = TIM4->CNT; |
kenjiArai | 1:102230f2879d | 265 | freq0 = (freq1 << 16) + freq0; |
kenjiArai | 1:102230f2879d | 266 | PRINTF("Input freq.=%10d [Hz], gate= %4.2f [Sec]\r\n", freq0, gate_time); |
kenjiArai | 1:102230f2879d | 267 | return freq0; // read counter |
kenjiArai | 1:102230f2879d | 268 | } |
kenjiArai | 1:102230f2879d | 269 | |
kenjiArai | 1:102230f2879d | 270 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 271 | // Clock output for test purpose |
kenjiArai | 1:102230f2879d | 272 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 273 | // Output internal clock |
kenjiArai | 1:102230f2879d | 274 | void FRQ_CUNTR::port_mco1_mco2_set(uint8_t select) |
kenjiArai | 1:102230f2879d | 275 | { |
kenjiArai | 1:102230f2879d | 276 | // PA8 -> MCO_1 |
kenjiArai | 1:102230f2879d | 277 | GPIOA->AFR[1] &= 0xfffffff0; |
kenjiArai | 1:102230f2879d | 278 | GPIOA->AFR[1] |= GPIO_AF0_MCO << 0; |
kenjiArai | 1:102230f2879d | 279 | GPIOA->MODER &= ~(GPIO_MODER_MODER8); // AF |
kenjiArai | 1:102230f2879d | 280 | GPIOA->MODER |= GPIO_MODER_MODER8_1; |
kenjiArai | 1:102230f2879d | 281 | GPIOA->OTYPER &= ~(GPIO_OTYPER_OT_8); // Output Push-Pull=0 |
kenjiArai | 1:102230f2879d | 282 | GPIOA->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR8;// Speed full=11 |
kenjiArai | 1:102230f2879d | 283 | GPIOA->PUPDR &= ~(GPIO_PUPDR_PUPDR8); // Pull-up=01 |
kenjiArai | 1:102230f2879d | 284 | GPIOA->PUPDR |= GPIO_PUPDR_PUPDR8_0; |
kenjiArai | 1:102230f2879d | 285 | // PC9 -> MCO_2 |
kenjiArai | 1:102230f2879d | 286 | GPIOC->AFR[1] &= 0xffffff0f; |
kenjiArai | 1:102230f2879d | 287 | GPIOC->AFR[1] |= GPIO_AF0_MCO << 4; |
kenjiArai | 1:102230f2879d | 288 | GPIOC->MODER &= ~(GPIO_MODER_MODER9); // AF |
kenjiArai | 1:102230f2879d | 289 | GPIOC->MODER |= GPIO_MODER_MODER9_1; |
kenjiArai | 1:102230f2879d | 290 | GPIOC->OTYPER &= ~(GPIO_OTYPER_OT_9); // Output Push-Pull=0 |
kenjiArai | 1:102230f2879d | 291 | GPIOC->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR9;// Speed full=11 |
kenjiArai | 1:102230f2879d | 292 | GPIOC->PUPDR &= ~(GPIO_PUPDR_PUPDR9); // Pull-up=01 |
kenjiArai | 1:102230f2879d | 293 | GPIOC->PUPDR |= GPIO_PUPDR_PUPDR9_0; |
kenjiArai | 1:102230f2879d | 294 | // Select output clock source |
kenjiArai | 1:102230f2879d | 295 | RCC->CFGR &= 0x009fffff; |
kenjiArai | 1:102230f2879d | 296 | if (select == 1) { |
kenjiArai | 1:102230f2879d | 297 | // MC01 output HSE 1/1, MCO2 output SYSCLK 1/1 |
kenjiArai | 1:102230f2879d | 298 | // MCO2 MCO2PRE MCO1PRE MCO1 |
kenjiArai | 1:102230f2879d | 299 | RCC->CFGR |= (0x0 << 30) + (0x0 << 27) + (0x0 << 24) + (0x2 << 21); |
kenjiArai | 1:102230f2879d | 300 | PRINTF("Set MCO1(PA8):HSE/1, MCO2(PC9):SYSCLK/1\r\n"); |
kenjiArai | 1:102230f2879d | 301 | } else if (select == 2) { |
kenjiArai | 1:102230f2879d | 302 | // MC01 output HSE 1/2, MCO2 output SYSCLK 1/2 |
kenjiArai | 1:102230f2879d | 303 | // MCO2 MCO2PRE MCO1PRE MCO1 |
kenjiArai | 1:102230f2879d | 304 | RCC->CFGR |= (0x0 << 30) + (0x4 << 27) + (0x4 << 24) + (0x2 << 21); |
kenjiArai | 1:102230f2879d | 305 | PRINTF("Set MCO1(PA8):HSE/2, MCO2(PC9):SYSCLK/2\r\n"); |
kenjiArai | 1:102230f2879d | 306 | } else { // select = 4 and other wrong order |
kenjiArai | 1:102230f2879d | 307 | // MC01 output HSE 1/4, MCO2 output SYSCLK 1/4 |
kenjiArai | 1:102230f2879d | 308 | // MCO2 MCO2PRE MCO1PRE MCO1 |
kenjiArai | 1:102230f2879d | 309 | RCC->CFGR |= (0x0 << 30) + (0x6 << 27) + (0x6 << 24) + (0x2 << 21); |
kenjiArai | 1:102230f2879d | 310 | PRINTF("Set MCO1(PA8):HSE/4, MCO2(PC9):SYSCLK/4\r\n"); |
kenjiArai | 0:bfdc6ed58a06 | 311 | } |
kenjiArai | 1:102230f2879d | 312 | } |
kenjiArai | 1:102230f2879d | 313 | |
kenjiArai | 1:102230f2879d | 314 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 315 | // Initialize TIM2 and TIM3+4 |
kenjiArai | 1:102230f2879d | 316 | //--------------------------------------------------------------------------------------- |
kenjiArai | 1:102230f2879d | 317 | void FRQ_CUNTR::initialize_Freq_counter(void) |
kenjiArai | 1:102230f2879d | 318 | { |
kenjiArai | 1:102230f2879d | 319 | initialize_TIM2(); |
kenjiArai | 1:102230f2879d | 320 | initialize_TIM3P4(); |
kenjiArai | 1:102230f2879d | 321 | } |
kenjiArai | 1:102230f2879d | 322 | |
kenjiArai | 1:102230f2879d | 323 | // Initialize TIM2 |
kenjiArai | 1:102230f2879d | 324 | // Internal clock (100MHz) or External clock(?MHz) and IC2 for GPS 1pps signal measurement |
kenjiArai | 1:102230f2879d | 325 | void FRQ_CUNTR::initialize_TIM2(void) |
kenjiArai | 1:102230f2879d | 326 | { |
kenjiArai | 1:102230f2879d | 327 | #if defined(BASE_EXTERNAL_CLOCK) |
kenjiArai | 1:102230f2879d | 328 | // PA0 -> Counter frequency input pin as Timer2 CH1/TI1 |
kenjiArai | 1:102230f2879d | 329 | RCC->AHB1ENR |= (RCC_AHB1ENR_GPIOAEN); |
kenjiArai | 1:102230f2879d | 330 | GPIOA->AFR[0] &= 0xfffffff0; |
kenjiArai | 1:102230f2879d | 331 | GPIOA->AFR[0] |= GPIO_AF1_TIM2; |
kenjiArai | 1:102230f2879d | 332 | GPIOA->MODER &= ~(GPIO_MODER_MODER0); // AF |
kenjiArai | 1:102230f2879d | 333 | GPIOA->MODER |= GPIO_MODER_MODER0_1; |
kenjiArai | 1:102230f2879d | 334 | GPIOA->PUPDR &= ~(GPIO_PUPDR_PUPDR0); // PU |
kenjiArai | 1:102230f2879d | 335 | GPIOA->PUPDR |= GPIO_PUPDR_PUPDR0_0; |
kenjiArai | 1:102230f2879d | 336 | // Initialize Timer2(32bit) for an external up counter mode |
kenjiArai | 1:102230f2879d | 337 | RCC->APB1ENR |= RCC_APB1ENR_TIM2EN; |
kenjiArai | 1:102230f2879d | 338 | TIM2->CR1 &= (uint16_t)(~(TIM_CR1_DIR | TIM_CR1_CMS | TIM_CR1_CKD));// count_up + div by 1 |
kenjiArai | 1:102230f2879d | 339 | TIM2->CR1 |= TIM_CR1_URS; |
kenjiArai | 1:102230f2879d | 340 | TIM2->ARR = 0xffffffff; |
kenjiArai | 1:102230f2879d | 341 | TIM2->PSC = 0x0000; |
kenjiArai | 1:102230f2879d | 342 | TIM2->CCER &= (uint16_t)~TIM_CCER_CC1E; // Disable the CC1 |
kenjiArai | 1:102230f2879d | 343 | TIM2->CCMR1 &= (uint16_t)~(TIM_CCMR1_IC1F | TIM_CCMR1_CC1S); // input filter + input select |
kenjiArai | 1:102230f2879d | 344 | TIM2->CCMR1 |= (uint16_t)TIM_CCMR1_CC1S_0; |
kenjiArai | 1:102230f2879d | 345 | TIM2->CCER &= (uint16_t)~(TIM_CCER_CC1P | TIM_CCER_CC1NE | TIM_CCER_CC1NP); // positive edge |
kenjiArai | 1:102230f2879d | 346 | TIM2->SMCR &= (uint16_t)~(TIM_SMCR_ECE | TIM_SMCR_TS | TIM_SMCR_SMS); // external mode 1 |
kenjiArai | 1:102230f2879d | 347 | TIM2->SMCR |= (uint16_t)( TIM_TS_TI1FP1 | TIM_SLAVEMODE_EXTERNAL1); // ECE must be ZERO!!!! |
kenjiArai | 1:102230f2879d | 348 | TIM2->CR1 |= (uint16_t)TIM_CR1_CEN; // Enable the TIM Counter |
kenjiArai | 1:102230f2879d | 349 | #else |
kenjiArai | 1:102230f2879d | 350 | // Initialize Timer2(32bit) for an external up counter mode |
kenjiArai | 1:102230f2879d | 351 | RCC->APB1ENR |= RCC_APB1ENR_TIM2EN; |
kenjiArai | 1:102230f2879d | 352 | TIM2->CR1 &= (uint16_t)(~(TIM_CR1_DIR | TIM_CR1_CMS | TIM_CR1_CKD)); // count_up + div by 1 |
kenjiArai | 1:102230f2879d | 353 | TIM2->CR1 |= TIM_CR1_URS; |
kenjiArai | 1:102230f2879d | 354 | TIM2->ARR = 0xffffffff; |
kenjiArai | 1:102230f2879d | 355 | TIM2->PSC = 0x0000; |
kenjiArai | 1:102230f2879d | 356 | TIM2->CCER &= (uint16_t)~TIM_CCER_CC1E; // Disable the CC1 |
kenjiArai | 1:102230f2879d | 357 | TIM2->SMCR &= (uint16_t)~(TIM_SMCR_ECE | TIM_SMCR_TS | TIM_SMCR_SMS); |
kenjiArai | 1:102230f2879d | 358 | TIM2->SMCR |= (uint16_t)0; // Internal clock = 100MHz |
kenjiArai | 1:102230f2879d | 359 | TIM2->CR1 |= (uint16_t)TIM_CR1_CEN; // Enable the TIM Counter |
kenjiArai | 1:102230f2879d | 360 | #endif |
kenjiArai | 1:102230f2879d | 361 | // PA1 -> Input Capture pin as Timer2 IC2 |
kenjiArai | 1:102230f2879d | 362 | GPIOA->AFR[0] &= 0xffffff0f; |
kenjiArai | 1:102230f2879d | 363 | GPIOA->AFR[0] |= GPIO_AF1_TIM2 << 4; |
kenjiArai | 1:102230f2879d | 364 | GPIOA->MODER &= ~(GPIO_MODER_MODER1); // AF |
kenjiArai | 1:102230f2879d | 365 | GPIOA->MODER |= GPIO_MODER_MODER1_1; |
kenjiArai | 1:102230f2879d | 366 | GPIOA->PUPDR &= ~(GPIO_PUPDR_PUPDR1); |
kenjiArai | 1:102230f2879d | 367 | GPIOA->PUPDR |= GPIO_PUPDR_PUPDR1_0; // PU |
kenjiArai | 1:102230f2879d | 368 | // Initialize Timer2 I.C.2 |
kenjiArai | 1:102230f2879d | 369 | TIM2->CCER &= (uint16_t)~TIM_CCER_CC2E; // Disable the CC2 |
kenjiArai | 1:102230f2879d | 370 | TIM2->CCMR1 &= (uint16_t)~(TIM_CCMR1_IC2F | TIM_CCMR1_CC2S);// input filter + input select |
kenjiArai | 1:102230f2879d | 371 | TIM2->CCMR1 |= (uint16_t)TIM_CCMR1_CC2S_0; |
kenjiArai | 1:102230f2879d | 372 | TIM2->CCER &= (uint16_t)~(TIM_CCER_CC2P | TIM_CCER_CC2NP); // positive edge |
kenjiArai | 1:102230f2879d | 373 | TIM2->CCER |= (uint16_t)TIM_CCER_CC2E; // enable capture |
kenjiArai | 1:102230f2879d | 374 | // PB10 -> Output Compare pin as Timer2 CH3/OC3 |
kenjiArai | 1:102230f2879d | 375 | GPIOB->AFR[1] &= 0xfffff0ff; |
kenjiArai | 1:102230f2879d | 376 | GPIOB->AFR[1] |= GPIO_AF1_TIM2 << 8; |
kenjiArai | 1:102230f2879d | 377 | GPIOB->MODER &= ~(GPIO_MODER_MODER10); // AF |
kenjiArai | 1:102230f2879d | 378 | GPIOB->MODER |= GPIO_MODER_MODER10_1; |
kenjiArai | 1:102230f2879d | 379 | GPIOB->OTYPER &= ~(GPIO_OTYPER_OT_10);// Output Push-Pull=0 |
kenjiArai | 1:102230f2879d | 380 | GPIOB->OSPEEDR |= GPIO_OSPEEDER_OSPEEDR10;// Speed full=11 |
kenjiArai | 1:102230f2879d | 381 | GPIOB->PUPDR &= ~(GPIO_PUPDR_PUPDR10); // Pull-up=01 |
kenjiArai | 1:102230f2879d | 382 | GPIOB->PUPDR |= GPIO_PUPDR_PUPDR10_0; |
kenjiArai | 1:102230f2879d | 383 | // Initialize Timer2 O.C.3 |
kenjiArai | 1:102230f2879d | 384 | TIM2->CCER &= (uint16_t)~TIM_CCER_CC3E; // Reset the CC3E Bit |
kenjiArai | 1:102230f2879d | 385 | TIM2->CCMR2 &= (uint16_t)~(TIM_CCMR2_OC3M | TIM_CCMR2_CC3S | |
kenjiArai | 1:102230f2879d | 386 | TIM_CCMR2_OC3PE | TIM_CCMR2_OC3CE | TIM_CCMR2_OC3FE); |
kenjiArai | 1:102230f2879d | 387 | TIM2->CCMR2 |= (TIM_CCMR2_OC3M_0 | TIM_CCMR2_OC3M_1); |
kenjiArai | 1:102230f2879d | 388 | TIM2->CCER &= (uint16_t)~TIM_CCER_CC3P;// Reset the Output Polarity level |
kenjiArai | 1:102230f2879d | 389 | TIM2->CCER |= (uint16_t)TIM_CCER_CC3E; // Set the CC3E Bit |
kenjiArai | 1:102230f2879d | 390 | new_gt_value = 0; |
kenjiArai | 1:102230f2879d | 391 | oc_hi_time = oc_set_time0; |
kenjiArai | 1:102230f2879d | 392 | oc_lo_time = oc_set_time1; |
kenjiArai | 1:102230f2879d | 393 | TIM2->CCR3 = TIM2->CNT + oc_hi_time;// Set the Capture Compare Register value |
kenjiArai | 1:102230f2879d | 394 | // Only for Debug purpose |
kenjiArai | 1:102230f2879d | 395 | BAUD(9600); |
kenjiArai | 1:102230f2879d | 396 | // PA |
kenjiArai | 1:102230f2879d | 397 | PRINTF("\r\n// Timer2(32bit) for an internal up counter mode\r\n"); |
kenjiArai | 1:102230f2879d | 398 | PRINTF("// PA1 -> Input Capture pin as Timer2 CH2/TI2\r\n"); |
kenjiArai | 1:102230f2879d | 399 | PRINTF("GPIOA->AFR[0]0x%08x:0x%08x\r\n",&GPIOA->AFR[0], GPIOA->AFR[0]); |
kenjiArai | 1:102230f2879d | 400 | PRINTF("GPIOA->AFR[1]0x%08x:0x%08x\r\n",&GPIOA->AFR[1], GPIOA->AFR[1]); |
kenjiArai | 1:102230f2879d | 401 | PRINTF("GPIOA->MODER 0x%08x:0x%08x\r\n",&GPIOA->MODER, GPIOA->MODER); |
kenjiArai | 1:102230f2879d | 402 | PRINTF("GPIOA->PUPDR 0x%08x:0x%08x\r\n",&GPIOA->PUPDR, GPIOA->PUPDR); |
kenjiArai | 1:102230f2879d | 403 | // PB |
kenjiArai | 1:102230f2879d | 404 | PRINTF("// PB10 -> Output Compare pin as Timer2 CH3/TI3\r\n"); |
kenjiArai | 1:102230f2879d | 405 | PRINTF("GPIOB->AFR[0]0x%08x:0x%08x\r\n",&GPIOB->AFR[0], GPIOB->AFR[0]); |
kenjiArai | 1:102230f2879d | 406 | PRINTF("GPIOB->AFR[1]0x%08x:0x%08x\r\n",&GPIOB->AFR[1], GPIOB->AFR[1]); |
kenjiArai | 1:102230f2879d | 407 | PRINTF("GPIOB->MODER 0x%08x:0x%08x\r\n",&GPIOB->MODER, GPIOB->MODER); |
kenjiArai | 1:102230f2879d | 408 | PRINTF("GPIOB->PUPDR 0x%08x:0x%08x\r\n",&GPIOB->PUPDR, GPIOB->PUPDR); |
kenjiArai | 1:102230f2879d | 409 | // TIM2 |
kenjiArai | 1:102230f2879d | 410 | PRINTF("// PA1 -> Timer2 IC2\r\n"); |
kenjiArai | 1:102230f2879d | 411 | PRINTF("// PB10-> Timer2 OC3\r\n"); |
kenjiArai | 1:102230f2879d | 412 | PRINTF("TIM2->CR1 0x%08x:0x%08x\r\n",&TIM2->CR1, TIM2->CR1); |
kenjiArai | 1:102230f2879d | 413 | PRINTF("TIM2->ARR 0x%08x:0x%08x\r\n",&TIM2->ARR, TIM2->ARR); |
kenjiArai | 1:102230f2879d | 414 | PRINTF("TIM2->PSC 0x%08x:0x%08x\r\n",&TIM2->PSC, TIM2->PSC); |
kenjiArai | 1:102230f2879d | 415 | PRINTF("TIM2->CCMR1 0x%08x:0x%08x\r\n",&TIM2->CCMR1, TIM2->CCMR1); |
kenjiArai | 1:102230f2879d | 416 | PRINTF("TIM2->CCMR2 0x%08x:0x%08x\r\n",&TIM2->CCMR2, TIM2->CCMR2); |
kenjiArai | 1:102230f2879d | 417 | PRINTF("TIM2->CCER 0x%08x:0x%08x\r\n",&TIM2->CCER, TIM2->CCER); |
kenjiArai | 1:102230f2879d | 418 | PRINTF("TIM2->SMCR 0x%08x:0x%08x\r\n",&TIM2->SMCR, TIM2->SMCR); |
kenjiArai | 1:102230f2879d | 419 | PRINTF("TIM2->CCR3 0x%08x:0x%08x\r\n\r\n",&TIM2->CCR3, TIM2->CCR3); |
kenjiArai | 1:102230f2879d | 420 | // Interrupt Timer2 IC2 |
kenjiArai | 1:102230f2879d | 421 | for (uint32_t i = 0; i < CNT_BF_SIZE; i++) { |
kenjiArai | 1:102230f2879d | 422 | onepps_cnt[i] = 0; |
kenjiArai | 0:bfdc6ed58a06 | 423 | } |
kenjiArai | 1:102230f2879d | 424 | onepps_num = 0; |
kenjiArai | 1:102230f2879d | 425 | onepps_ready_flg = 0; |
kenjiArai | 1:102230f2879d | 426 | onepps_buf_full = 0; |
kenjiArai | 1:102230f2879d | 427 | onepps_cnt_avarage = 0; |
kenjiArai | 1:102230f2879d | 428 | tim2_ready_flg = 0; |
kenjiArai | 1:102230f2879d | 429 | tim2_cnt_data = 0; |
kenjiArai | 1:102230f2879d | 430 | tim2_old_cnt_data = 0; |
kenjiArai | 1:102230f2879d | 431 | TIM2->SR &= ~(TIM_SR_CC2IF + TIM_SR_CC3IF); // clear IC flag |
kenjiArai | 1:102230f2879d | 432 | TIM2->DIER |= TIM_DIER_CC2IE + TIM_DIER_CC3IE; |
kenjiArai | 1:102230f2879d | 433 | NVIC_SetVector(TIM2_IRQn, (uint32_t)irq_ic2_TIM2); |
kenjiArai | 1:102230f2879d | 434 | NVIC_ClearPendingIRQ(TIM2_IRQn); |
kenjiArai | 1:102230f2879d | 435 | NVIC_EnableIRQ(TIM2_IRQn); |
kenjiArai | 1:102230f2879d | 436 | } |
kenjiArai | 1:102230f2879d | 437 | |
kenjiArai | 1:102230f2879d | 438 | // Initialize TIM3 and TIM4 as 32bit counter (TIM3(16bit) + TIM4(16bit)) |
kenjiArai | 1:102230f2879d | 439 | // TIM3 clock input is unkown freq.(measuring freq.) and TIM4 is slave counter |
kenjiArai | 1:102230f2879d | 440 | // 1sec gate signal connected both TIM3 IC2 and TIM4 IC1 |
kenjiArai | 1:102230f2879d | 441 | void FRQ_CUNTR::initialize_TIM3P4(void) |
kenjiArai | 1:102230f2879d | 442 | { |
kenjiArai | 1:102230f2879d | 443 | // PC6 -> Unkown frequency input pin as Timer3 CH1/TI1 |
kenjiArai | 1:102230f2879d | 444 | RCC->AHB1ENR |= (RCC_AHB1ENR_GPIOCEN); |
kenjiArai | 1:102230f2879d | 445 | GPIOC->AFR[0] &= 0xf0ffffff; |
kenjiArai | 1:102230f2879d | 446 | GPIOC->AFR[0] |= GPIO_AF2_TIM3 << 24; |
kenjiArai | 1:102230f2879d | 447 | GPIOC->MODER &= ~(GPIO_MODER_MODER6); // AF |
kenjiArai | 1:102230f2879d | 448 | GPIOC->MODER |= GPIO_MODER_MODER6_1; |
kenjiArai | 1:102230f2879d | 449 | GPIOC->PUPDR &= ~(GPIO_PUPDR_PUPDR6); |
kenjiArai | 1:102230f2879d | 450 | GPIOC->PUPDR |= GPIO_PUPDR_PUPDR6_0; // PU |
kenjiArai | 1:102230f2879d | 451 | // Initialize Timer3(16bit) for an external up counter mode |
kenjiArai | 1:102230f2879d | 452 | RCC->APB1ENR |= RCC_APB1ENR_TIM3EN; |
kenjiArai | 1:102230f2879d | 453 | TIM3->CR1 &= (uint16_t)(~(TIM_CR1_DIR | TIM_CR1_CMS | TIM_CR1_CKD));// count_up + div by 1 |
kenjiArai | 1:102230f2879d | 454 | TIM3->CR1 |= (uint16_t)TIM_CR1_URS; |
kenjiArai | 1:102230f2879d | 455 | TIM3->ARR = 0xffff; |
kenjiArai | 1:102230f2879d | 456 | TIM3->CCER &= (uint16_t)~TIM_CCER_CC1E; // Disable the CC1 |
kenjiArai | 1:102230f2879d | 457 | TIM3->CCMR1 &= (uint16_t)~(TIM_CCMR1_IC1F | TIM_CCMR1_CC1S); // input filter + input select |
kenjiArai | 1:102230f2879d | 458 | TIM3->CCMR1 |= (uint16_t)TIM_CCMR1_CC1S_0; |
kenjiArai | 1:102230f2879d | 459 | TIM3->CCER &= (uint16_t)~(TIM_CCER_CC1P | TIM_CCER_CC1NE | TIM_CCER_CC1NP);// positive edge |
kenjiArai | 1:102230f2879d | 460 | TIM3->SMCR &= (uint16_t)~(TIM_SMCR_ECE | TIM_SMCR_TS | TIM_SMCR_SMS);// external mode 1 |
kenjiArai | 1:102230f2879d | 461 | TIM3->SMCR |= (uint16_t)( TIM_TS_TI1FP1 | TIM_SLAVEMODE_EXTERNAL1); // ECE must be ZERO!!!! |
kenjiArai | 1:102230f2879d | 462 | TIM3->CR2 &= (uint16_t)~(TIM_CR2_TI1S | TIM_CR2_MMS); |
kenjiArai | 1:102230f2879d | 463 | TIM3->CR2 |= (uint16_t)TIM_CR2_MMS_1; // TRGO update |
kenjiArai | 1:102230f2879d | 464 | TIM3->CR1 |= (uint16_t)TIM_CR1_CEN; // Enable the TIM Counter |
kenjiArai | 1:102230f2879d | 465 | // Initialize Timer4(16bit) for an slave up counter of TIM3 |
kenjiArai | 1:102230f2879d | 466 | RCC->APB1ENR |= RCC_APB1ENR_TIM4EN; |
kenjiArai | 1:102230f2879d | 467 | TIM4->CR1 &= (uint16_t)(~(TIM_CR1_DIR | TIM_CR1_CMS | TIM_CR1_CKD));// count_up + div by 1 |
kenjiArai | 1:102230f2879d | 468 | TIM4->CR1 |= (uint16_t)TIM_CR1_URS; |
kenjiArai | 1:102230f2879d | 469 | TIM4->ARR = 0xffff; |
kenjiArai | 1:102230f2879d | 470 | TIM4->CCER &= (uint16_t)TIM_CCER_CC1E; // Capture enable |
kenjiArai | 1:102230f2879d | 471 | TIM4->SMCR &= (uint16_t)~(TIM_SMCR_ECE | TIM_SMCR_TS | TIM_SMCR_SMS);// external mode 1 |
kenjiArai | 1:102230f2879d | 472 | TIM4->SMCR |= (uint16_t)( TIM_TS_ITR2 | TIM_SLAVEMODE_EXTERNAL1);// ECE must be ZERO!!!! |
kenjiArai | 1:102230f2879d | 473 | TIM4->CR2 &= (uint16_t)~(TIM_CR2_TI1S | TIM_CR2_MMS); |
kenjiArai | 1:102230f2879d | 474 | TIM4->CR1 |= (uint16_t)TIM_CR1_CEN; // Enable the TIM Counter |
kenjiArai | 1:102230f2879d | 475 | // PC7 -> Input Capture pin as Timer3 IC2 |
kenjiArai | 1:102230f2879d | 476 | GPIOC->AFR[0] &= 0x0fffffff; |
kenjiArai | 1:102230f2879d | 477 | GPIOC->AFR[0] |= GPIO_AF2_TIM3 << 28; |
kenjiArai | 1:102230f2879d | 478 | GPIOC->MODER &= ~(GPIO_MODER_MODER7); // AF |
kenjiArai | 1:102230f2879d | 479 | GPIOC->MODER |= GPIO_MODER_MODER7_1; |
kenjiArai | 1:102230f2879d | 480 | GPIOC->PUPDR &= ~(GPIO_PUPDR_PUPDR7); |
kenjiArai | 1:102230f2879d | 481 | GPIOC->PUPDR |= GPIO_PUPDR_PUPDR7_0; // PU |
kenjiArai | 1:102230f2879d | 482 | // Initialize Timer3 IC2 |
kenjiArai | 1:102230f2879d | 483 | TIM3->CCER &= (uint16_t)~TIM_CCER_CC2E; // Disable the CC2 |
kenjiArai | 1:102230f2879d | 484 | TIM3->CCMR1 &= (uint16_t)~(TIM_CCMR1_IC2F | TIM_CCMR1_CC2S);// input filter + input select |
kenjiArai | 1:102230f2879d | 485 | TIM3->CCMR1 |= (uint16_t)TIM_CCMR1_CC2S_0; |
kenjiArai | 1:102230f2879d | 486 | TIM3->CCER &= (uint16_t)~(TIM_CCER_CC2P | TIM_CCER_CC2NP); // positive edge |
kenjiArai | 1:102230f2879d | 487 | TIM3->CCER |= (uint16_t)TIM_CCER_CC2E; // enable capture |
kenjiArai | 1:102230f2879d | 488 | // PB6 -> Input Capture pin as Timer4 IC1 |
kenjiArai | 1:102230f2879d | 489 | GPIOB->AFR[0] &= 0xf0ffffff; |
kenjiArai | 1:102230f2879d | 490 | GPIOB->AFR[0] |= GPIO_AF2_TIM4 << 24; |
kenjiArai | 1:102230f2879d | 491 | GPIOB->MODER &= ~(GPIO_MODER_MODER6); // AF |
kenjiArai | 1:102230f2879d | 492 | GPIOB->MODER |= GPIO_MODER_MODER6_1; |
kenjiArai | 1:102230f2879d | 493 | GPIOB->PUPDR &= ~(GPIO_PUPDR_PUPDR6); |
kenjiArai | 1:102230f2879d | 494 | GPIOB->PUPDR |= GPIO_PUPDR_PUPDR6_0; // Pull-up=01 |
kenjiArai | 1:102230f2879d | 495 | // Initialize Timer4 IC1 |
kenjiArai | 1:102230f2879d | 496 | TIM4->CCER &= (uint16_t)~TIM_CCER_CC1E; |
kenjiArai | 1:102230f2879d | 497 | TIM4->CCMR1 &= ((uint16_t)~TIM_CCMR1_CC1S) & ((uint16_t)~TIM_CCMR1_IC1F); |
kenjiArai | 1:102230f2879d | 498 | TIM4->CCMR1 |= (uint16_t)TIM_CCMR1_CC1S_0; |
kenjiArai | 1:102230f2879d | 499 | TIM4->CCER &= (uint16_t)~(TIM_CCER_CC1P | TIM_CCER_CC1NP); // positive edge |
kenjiArai | 1:102230f2879d | 500 | TIM4->CCER |= (uint16_t)TIM_CCER_CC1E; // enable capture |
kenjiArai | 1:102230f2879d | 501 | // Only for Debug purpose |
kenjiArai | 1:102230f2879d | 502 | // PB |
kenjiArai | 1:102230f2879d | 503 | PRINTF("// PB6 -> Input Capture pin as Timer4 CH1/TI1\r\n"); |
kenjiArai | 1:102230f2879d | 504 | PRINTF("GPIOB->AFR[0]0x%08x:0x%08x\r\n",&GPIOB->AFR[0], GPIOB->AFR[0]); |
kenjiArai | 1:102230f2879d | 505 | PRINTF("GPIOB->AFR[1]0x%08x:0x%08x\r\n",&GPIOB->AFR[1], GPIOB->AFR[1]); |
kenjiArai | 1:102230f2879d | 506 | PRINTF("GPIOB->MODER 0x%08x:0x%08x\r\n",&GPIOB->MODER, GPIOB->MODER); |
kenjiArai | 1:102230f2879d | 507 | PRINTF("GPIOB->PUPDR 0x%08x:0x%08x\r\n",&GPIOB->PUPDR, GPIOB->PUPDR); |
kenjiArai | 1:102230f2879d | 508 | PRINTF("GPIOB->OTYPER 0x%08x:0x%08x\r\n",&GPIOB->OTYPER, GPIOB->OTYPER); |
kenjiArai | 1:102230f2879d | 509 | PRINTF("GPIOB->OSPEEDR 0x%08x:0x%08x\r\n",&GPIOB->OSPEEDR, GPIOB->OSPEEDR); |
kenjiArai | 1:102230f2879d | 510 | // PC |
kenjiArai | 1:102230f2879d | 511 | PRINTF("// PC6 -> unkown frequency input pin as Timer3 CH1/TI1\r\n"); |
kenjiArai | 1:102230f2879d | 512 | PRINTF("// PC7 -> Input Capture pin as Timer3 CH2/TI2\r\n"); |
kenjiArai | 1:102230f2879d | 513 | PRINTF("GPIOC->AFR[0]0x%08x:0x%08x\r\n",&GPIOC->AFR[0], GPIOC->AFR[0]); |
kenjiArai | 1:102230f2879d | 514 | PRINTF("GPIOC->AFR[1]0x%08x:0x%08x\r\n",&GPIOC->AFR[1], GPIOC->AFR[1]); |
kenjiArai | 1:102230f2879d | 515 | PRINTF("GPIOC->MODER 0x%08x:0x%08x\r\n",&GPIOC->MODER, GPIOC->MODER); |
kenjiArai | 1:102230f2879d | 516 | PRINTF("GPIOC->PUPDR 0x%08x:0x%08x\r\n",&GPIOC->PUPDR, GPIOC->PUPDR); |
kenjiArai | 1:102230f2879d | 517 | PRINTF("GPIOC->OTYPER 0x%08x:0x%08x\r\n",&GPIOC->OTYPER, GPIOC->OTYPER); |
kenjiArai | 1:102230f2879d | 518 | PRINTF("GPIOC->OSPEEDR 0x%08x:0x%08x\r\n",&GPIOC->OSPEEDR, GPIOC->OSPEEDR); |
kenjiArai | 1:102230f2879d | 519 | // TIM3 |
kenjiArai | 1:102230f2879d | 520 | PRINTF("// PC6 -> Timer3(16bit) for an external up counter mode\r\n"); |
kenjiArai | 1:102230f2879d | 521 | PRINTF("// PC7 -> Timer3 IC2\r\n"); |
kenjiArai | 1:102230f2879d | 522 | PRINTF("TIM3->CR1 0x%08x:0x%08x\r\n",&TIM3->CR1, TIM3->CR1); |
kenjiArai | 1:102230f2879d | 523 | PRINTF("TIM3->ARR 0x%08x:0x%08x\r\n",&TIM3->ARR, TIM3->ARR); |
kenjiArai | 1:102230f2879d | 524 | PRINTF("TIM3->PSC 0x%08x:0x%08x\r\n",&TIM3->PSC, TIM3->PSC); |
kenjiArai | 1:102230f2879d | 525 | PRINTF("TIM3->CCMR1 0x%08x:0x%08x\r\n",&TIM3->CCMR1, TIM3->CCMR1); |
kenjiArai | 1:102230f2879d | 526 | PRINTF("TIM3->CCMR2 0x%08x:0x%08x\r\n",&TIM3->CCMR2, TIM3->CCMR2); |
kenjiArai | 1:102230f2879d | 527 | PRINTF("TIM3->CCER 0x%08x:0x%08x\r\n",&TIM3->CCER, TIM3->CCER); |
kenjiArai | 1:102230f2879d | 528 | PRINTF("TIM3->SMCR 0x%08x:0x%08x\r\n",&TIM3->SMCR, TIM3->SMCR); |
kenjiArai | 1:102230f2879d | 529 | // TIM4 |
kenjiArai | 1:102230f2879d | 530 | PRINTF("// none-> Timer4(16bit) for an slave counter\r\n"); |
kenjiArai | 1:102230f2879d | 531 | PRINTF("// PB6 -> Timer4 IC1\r\n"); |
kenjiArai | 1:102230f2879d | 532 | PRINTF("TIM4->CR1 0x%08x:0x%08x\r\n",&TIM4->CR1, TIM4->CR1); |
kenjiArai | 1:102230f2879d | 533 | PRINTF("TIM4->ARR 0x%08x:0x%08x\r\n",&TIM4->ARR, TIM4->ARR); |
kenjiArai | 1:102230f2879d | 534 | PRINTF("TIM4->PSC 0x%08x:0x%08x\r\n",&TIM4->PSC, TIM4->PSC); |
kenjiArai | 1:102230f2879d | 535 | PRINTF("TIM4->CCMR1 0x%08x:0x%08x\r\n",&TIM4->CCMR1, TIM4->CCMR1); |
kenjiArai | 1:102230f2879d | 536 | PRINTF("TIM4->CCMR2 0x%08x:0x%08x\r\n",&TIM4->CCMR2, TIM4->CCMR2); |
kenjiArai | 1:102230f2879d | 537 | PRINTF("TIM4->CCER 0x%08x:0x%08x\r\n",&TIM4->CCER, TIM4->CCER); |
kenjiArai | 1:102230f2879d | 538 | PRINTF("TIM4->SMCR 0x%08x:0x%08x\r\n\r\n",&TIM4->SMCR, TIM4->SMCR); |
kenjiArai | 1:102230f2879d | 539 | PRINTF("RCC->APB1ENR 0x%08x:0x%08x\r\n\r\n",&RCC->APB1ENR, RCC->APB1ENR); |
kenjiArai | 1:102230f2879d | 540 | // Interrupt Timer3 IC2 |
kenjiArai | 1:102230f2879d | 541 | tim3p4_ready_flg = 0; |
kenjiArai | 1:102230f2879d | 542 | tim3p4_cnt_data = 0; |
kenjiArai | 1:102230f2879d | 543 | TIM3->SR &= ~TIM_SR_CC2IF; // clear IC flag |
kenjiArai | 1:102230f2879d | 544 | TIM4->SR &= ~TIM_SR_CC1IF; |
kenjiArai | 1:102230f2879d | 545 | TIM3->DIER |= TIM_DIER_CC2IE; |
kenjiArai | 1:102230f2879d | 546 | NVIC_SetVector(TIM3_IRQn, (uint32_t)irq_ic2_TIM3P4); |
kenjiArai | 1:102230f2879d | 547 | NVIC_ClearPendingIRQ(TIM3_IRQn); |
kenjiArai | 1:102230f2879d | 548 | NVIC_EnableIRQ(TIM3_IRQn); |
kenjiArai | 1:102230f2879d | 549 | } |
kenjiArai | 0:bfdc6ed58a06 | 550 | |
kenjiArai | 0:bfdc6ed58a06 | 551 | } // Frequency_counter |