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351 lines
9.5 KiB
C++
351 lines
9.5 KiB
C++
// BSP mapping functions
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#include "BSP.h"
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#include "I2C_Wrapper.hpp"
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#include "IRQ.h"
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#include "Pins.h"
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#include "Setup.h"
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#include "TipThermoModel.h"
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#include "USBPD.h"
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#include "configuration.h"
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#include "crc32.h"
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#include "history.hpp"
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#include "main.hpp"
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// These control the period's of time used for the PWM
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const uint16_t powerPWM = 255;
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const uint8_t holdoffTicks = 25; // This is the tick delay
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const uint8_t tempMeasureTicks = 25;
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uint16_t totalPWM = 255; // Total length of the cycle's ticks
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void resetWatchdog() {
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//#TODO
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}
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#ifdef TEMP_NTC
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// Lookup table for the NTC
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// Stored as ADCReading,Temp in degC
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static const int32_t NTCHandleLookup[] = {
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// ADC Reading , Temp in C x10
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// 64179, -400, //
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// 64001, -390, //
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// 63813, -380, //
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// 63618, -370, //
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// 63415, -360, //
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// 63204, -350, //
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// 62983, -340, //
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// 62757, -330, //
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// 62518, -320, //
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// 62271, -310, //
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// 62012, -300, //
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// 61748, -290, //
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// 61473, -280, //
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// 61186, -270, //
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// 60891, -260, //
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// 60585, -250, //
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// 60268, -240, //
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// 59941, -230, //
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// 59604, -220, //
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// 59255, -210, //
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58896, -200, //
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58526, -190, //
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58145, -180, //
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57752, -170, //
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57349, -160, //
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56934, -150, //
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56510, -140, //
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56073, -130, //
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55626, -120, //
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55167, -110, //
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54699, -100, //
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54220, -90, //
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53729, -80, //
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53229, -70, //
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52717, -60, //
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52200, -50, //
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51667, -40, //
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51128, -30, //
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50582, -20, //
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50025, -10, //
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49455, 0, //
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48883, 10, //
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48302, 20, //
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47712, 30, //
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47116, 40, //
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46510, 50, //
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45902, 60, //
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45286, 70, //
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44666, 80, //
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44044, 90, //
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43412, 100, //
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42783, 110, //
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42148, 120, //
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41500, 130, //
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40860, 140, //
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40222, 150, //
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39576, 160, //
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38935, 170, //
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38289, 180, //
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37640, 190, //
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36989, 200, //
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36353, 210, //
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35705, 220, //
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35060, 230, //
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34422, 240, //
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33792, 250, //
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33160, 260, //
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32534, 270, //
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31910, 280, //
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31291, 290, //
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30677, 300, //
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30069, 310, //
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29466, 320, //
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28867, 330, //
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28277, 340, //
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27693, 350, //
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27115, 360, //
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26544, 370, //
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25981, 380, //
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25426, 390, //
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24880, 400, //
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24339, 410, //
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23806, 420, //
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23281, 430, //
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22767, 440, //
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22259, 450, //
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// 21761, 460, //
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// 21268, 470, //
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// 20787, 480, //
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// 20313, 490, //
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// 19848, 500, //
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// 19392, 510, //
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// 18945, 520, //
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// 18507, 530, //
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// 18076, 540, //
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// 17655, 550, //
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// 17242, 560, //
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// 16838, 570, //
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// 16442, 580, //
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// 16052, 590, //
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// 15672, 600, //
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};
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#endif
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uint16_t getHandleTemperature(uint8_t sample) {
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int32_t result = getADCHandleTemp(sample);
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// Tip is wired up with an NTC thermistor
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// 10K NTC balanced with a 10K pulldown
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// NTCG163JF103FTDS
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#ifdef TEMP_NTC
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// vout =
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// For now not doing interpolation
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for (uint32_t i = 0; i < (sizeof(NTCHandleLookup) / (2 * sizeof(uint16_t))); i++) {
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if (result > NTCHandleLookup[(i * 2) + 0]) {
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return NTCHandleLookup[(i * 2) + 1];
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}
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}
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return 45 * 10;
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#endif
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#ifdef TEMP_TMP36
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#warn This is not shipped in production
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result -= 10240; // remove 0.5V offset
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// 10mV per C
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// 204.7 counts per Deg C above 0C
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result *= 10;
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result /= 205;
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if (result < 0) {
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result = 0;
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}
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return result;
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#endif
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}
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uint16_t getInputVoltageX10(uint16_t divisor, uint8_t sample) {
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uint32_t res = getADCVin(sample);
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res *= 4;
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res /= divisor;
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return res;
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}
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void unstick_I2C() {
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/* configure SDA/SCL for GPIO */
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// GPIO_BC(GPIOB) |= SDA_Pin | SCL_Pin;
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// gpio_init(SDA_GPIO_Port, GPIO_MODE_OUT_OD, GPIO_OSPEED_50MHZ, SDA_Pin | SCL_Pin);
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// for (int i = 0; i < 8; i++) {
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// asm("nop");
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// asm("nop");
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// asm("nop");
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// asm("nop");
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// asm("nop");
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// GPIO_BOP(GPIOB) |= SCL_Pin;
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// asm("nop");
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// asm("nop");
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// asm("nop");
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// asm("nop");
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// asm("nop");
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// GPIO_BOP(GPIOB) &= SCL_Pin;
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// }
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// /* connect PB6 to I2C0_SCL */
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// /* connect PB7 to I2C0_SDA */
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// gpio_init(SDA_GPIO_Port, GPIO_MODE_AF_OD, GPIO_OSPEED_50MHZ, SDA_Pin | SCL_Pin);
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}
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uint8_t getButtonA() {
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uint8_t val = gpio_read(KEY_A_Pin);
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return val;
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}
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uint8_t getButtonB() {
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uint8_t val = gpio_read(KEY_B_Pin);
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return val;
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}
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void reboot() {
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// Spin for watchdog
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for (;;) {}
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}
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void delay_ms(uint16_t count) {
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// delay_1ms(count);
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BL702_Delay_MS(count);
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}
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uint32_t __get_IPSR(void) {
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return 0; // To shut-up CMSIS
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}
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bool isTipDisconnected() {
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uint16_t tipDisconnectedThres = TipThermoModel::getTipMaxInC() - 5;
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uint32_t tipTemp = TipThermoModel::getTipInC();
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return tipTemp > tipDisconnectedThres;
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}
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void setStatusLED(const enum StatusLED state) {
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// Dont have one
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}
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uint8_t lastTipResistance = 85; // default safe
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uint32_t lastTipReadinguV = 0;
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uint8_t getTipResitanceX10() {
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// Return tip resistance in x10 ohms
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// We can measure this using the op-amp
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return lastTipResistance;
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}
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void startMeasureTipResistance() {
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// We want to calculate lastTipResistance
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// If tip is connected, and the tip is cold and the tip is not being heated
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// We can use the GPIO to inject a small current into the tip and measure this
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// The gpio is 5.1k -> diode -> tip -> gnd
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// Source is 3.3V-0.5V
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// Which is around 0.54mA this will induce:
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// 6 ohm tip -> 3.24mV (Real world ~= 3320)
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// 8 ohm tip -> 4.32mV (Real world ~= 4500)
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// Which is definitely measureable
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// Taking shortcuts here as we know we only really have to pick apart 6 and 8 ohm tips
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// These are reported as 60 and 75 respectively
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lastTipReadinguV = TipThermoModel::convertTipRawADCTouV(getTipRawTemp(0));
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gpio_write(TIP_RESISTANCE_SENSE, 1);
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}
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void FinishMeasureTipResistance() {
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gpio_write(TIP_RESISTANCE_SENSE, 0);
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// read the tip uV with the current source on
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uint32_t newReading = (TipThermoModel::convertTipRawADCTouV(getTipRawTemp(0)));
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if (newReading < lastTipReadinguV) {
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return;
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}
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// newReading -= lastTipReadinguV;
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// MSG("Tip Delta %lu, %lu %lu \r\n", newReading - lastTipReadinguV, newReading, lastTipReadinguV);
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newReading -= lastTipReadinguV;
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// As we are only detecting two resistances; we can split the difference for now
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uint8_t newRes = 0;
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if (newReading > 5000) {
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return; // Change nothing as probably disconnected tip
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} else if (newReading < 4000) {
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newRes = 60;
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} else {
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newRes = 80;
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}
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lastTipResistance = newRes;
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}
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volatile bool tipMeasurementOccuring = false;
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volatile uint8_t tipSenseResistancex10Ohms = 0;
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void performTipMeasurementStep(bool start) {
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static TickType_t lastMeas = 0;
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// Inter state that performs the steps to measure the resistor on the tip
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// Return 1 if a measurement is ongoing
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// We want to perform our startup measurements of the tip resistance until we detect one fitted
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// Step 1; if not setup, we turn on pullup and then wait
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if (tipMeasurementOccuring == false && (start || tipSenseResistancex10Ohms == 0 || lastMeas == 0)) {
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// Block starting if tip removed
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if (isTipDisconnected()) {
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return;
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}
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tipMeasurementOccuring = true;
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tipSenseResistancex10Ohms = 0;
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lastMeas = xTaskGetTickCount();
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startMeasureTipResistance();
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return;
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}
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// Wait 100ms for settle time
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if ((xTaskGetTickCount() - lastMeas) < (TICKS_100MS)) {
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return;
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}
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lastMeas = xTaskGetTickCount();
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// We are sensing the resistance
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FinishMeasureTipResistance();
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tipMeasurementOccuring = false;
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}
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uint8_t preStartChecks() {
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performTipMeasurementStep(false);
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return tipMeasurementOccuring ? 1 : 0;
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}
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// Return hardware unique ID if possible
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uint64_t getDeviceID() {
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// uint32_t tmp = 0;
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// uint32_t tmp2 = 0;
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// EF_Ctrl_Read_Sw_Usage(0, &tmp);
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// EF_Ctrl_Read_Sw_Usage(1, &tmp2);
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// return tmp | (((uint64_t)tmp2) << 32);
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uint64_t tmp = 0;
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EF_Ctrl_Read_Chip_ID((uint8_t *)&tmp);
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return __builtin_bswap64(tmp);
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}
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auto crc32Table = CRC32Table<>();
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uint32_t gethash() {
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static uint32_t computedHash = 0;
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if (computedHash != 0) {
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return computedHash;
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}
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uint32_t deviceKey = EF_Ctrl_Get_Key_Slot_w0();
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const uint32_t crcInitialVector = 0xCAFEF00D;
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uint8_t crcPayload[] = {(uint8_t)(deviceKey), (uint8_t)(deviceKey >> 8), (uint8_t)(deviceKey >> 16), (uint8_t)(deviceKey >> 24), 0, 0, 0, 0, 0, 0, 0, 0};
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EF_Ctrl_Read_Chip_ID(crcPayload + sizeof(deviceKey)); // Load device key into second half
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computedHash = crc32Table.computeCRC32(crcInitialVector, crcPayload, sizeof(crcPayload));
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return computedHash;
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}
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uint32_t getDeviceValidation() {
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// 4 byte user data burned in at factory
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return EF_Ctrl_Get_Key_Slot_w1();
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}
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uint8_t getDeviceValidationStatus() {
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uint32_t programmedHash = EF_Ctrl_Get_Key_Slot_w1();
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uint32_t computedHash = gethash();
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return programmedHash == computedHash ? 0 : 1;
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} |