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get initial code working 

fixed some initial GPIO configuration.
fixed systick interrupt not defined as an interrupt.
fixed any interactions with backup registers causing lockups.
completed RGBLED work.
fixed button handler code.
add currently non-working lightsense code.
This commit is contained in:
true 2024-10-22 23:06:18 -07:00
parent 078f382dcc
commit 5f18010bcd
11 changed files with 417 additions and 111 deletions
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119
gat_stand_fw/gat_stand_fw.launch
View File

@ -1,61 +1,62 @@
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34
gat_stand_fw/user/main.c
View File

@ -12,6 +12,7 @@
#include <ch32v20x.h>
#include "src/adc.h"
#include "src/btn.h"
#include "src/gat_gpio.h"
#include "src/port_pwr.h"
@ -32,9 +33,9 @@ void btn_bot_push_cb(uint8_t idx)
static inline void systick_init(void)
{
SysTick->CMP = (SystemCoreClock / 256 / 8) - 1; // we want a 256Hz interrupt
SysTick->CMP = (SystemCoreClock / 256) - 1; // we want a 256Hz interrupt
SysTick->CNT = 0; // clear counter
SysTick->CTLR = 0xB; // start counter in /8 mode, enable interrupts, auto-reset counter
SysTick->CTLR = 0xF; // start counter in /1 mode, enable interrupts, auto-reset counter
SysTick->SR = 0; // clear count comparison flag
NVIC_EnableIRQ(SysTicK_IRQn); // enable interrupt
@ -65,15 +66,21 @@ static void gpio_init()
// RGBLED (PA0, PA1, PA2)
RGBLED_PORT->BSHR = RGBLED_PIN_R | RGBLED_PIN_G | RGBLED_PIN_B;
gpio.GPIO_Mode = GPIO_Mode_Out_PP;
gpio.GPIO_Mode = GPIO_Mode_AF_PP;
gpio.GPIO_Pin = RGBLED_PIN_R | RGBLED_PIN_G | RGBLED_PIN_B;
GPIO_Init(RGBLED_PORT, &gpio);
// GAT power enable (PA3)
GAT_EN_PORT->BCR = GAT_EN_PIN;
gpio.GPIO_Mode = GPIO_Mode_Out_PP;
gpio.GPIO_Pin = GAT_EN_PIN;
GPIO_Init(GAT_EN_PORT, &gpio);
// USB2 power enable (PB4)
USB2_EN_PORT->BCR = USB2_EN_PIN;
gpio.GPIO_Pin = USB2_EN_PIN;
GPIO_Init(USB2_EN_PORT, &gpio);
// GAT overcurrent detect (PA4)
gpio.GPIO_Mode = GPIO_Mode_IPU;
gpio.GPIO_Pin = GAT_OC_PIN;
@ -83,15 +90,10 @@ static void gpio_init()
gpio.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 | GPIO_Pin_14;
GPIO_Init(GPIOB, &gpio);
// GAT GPIO will be configured later
// GAT GPIO is configured in gat_gpio.c
// USB PA11, PA12 will be configured later
// USB2 power enable (PB4)
gpio.GPIO_Mode = GPIO_Mode_Out_PP;
gpio.GPIO_Pin = USB2_EN_PIN;
GPIO_Init(USB2_EN_PORT, &gpio);
// unused pins that are used for I2C passthrough
gpio.GPIO_Mode = GPIO_Mode_IN_FLOATING;
gpio.GPIO_Pin = GPIO_Pin_15;
@ -117,7 +119,7 @@ int main(void)
// enable peripheral clocks
RCC_APB1PeriphClockCmd( RCC_APB1Periph_PWR | RCC_APB1Periph_BKP |
RCC_APB1Periph_I2C1, ENABLE);
RCC_APB1Periph_I2C1 | RCC_APB1Periph_TIM2, ENABLE);
RCC_APB2PeriphClockCmd( RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOA |
RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOD |
RCC_APB2Periph_ADC1, ENABLE);
@ -145,6 +147,9 @@ int main(void)
// start up rgbled
rgbled_init();
// initialize light sense stuff
adc_init();
// finally, get the system tick interrupt going
systick_init();
@ -158,14 +163,23 @@ int main(void)
uint8_t st_tick;
volatile uint32_t uptime;
__attribute__((interrupt("WCH-Interrupt-fast")))
void SysTick_Handler(void)
{
st_tick++;
if (!st_tick) uptime++;
// update buttons
btn_poll();
if (!(st_tick & 0x3)) {
rgbled_update();
}
// clear comparison flag
SysTick->SR = 0;
if (SysTick->SR) {
while (1);
}
}

211
gat_stand_fw/user/src/adc.c Normal file
View File

@ -0,0 +1,211 @@
/*
* lightsense.c
*
* Created on: Oct 18, 2024
* Author: true
*/
#include <ch32v20x.h>
#include <stdint.h>
#include "adc.h"
static const uint8_t led_brightness_map[] = {
47, 44, 42, 41,
40, 38, 36, 34,
32, 31, 30, 29,
27, 25, 21, 19,
17, 16, 15, 15, // indoors normal brightness
14, 14, 13, 13,
12, 12, 12, 11,
11, 11, 10, 10,
10, 9, 9, 9,
8, 8, 8, 8,
7, 7, 7, 7,
7, 6, 6, 6
};
static GPIO_InitTypeDef lsens_gpio = {
.GPIO_Mode = GPIO_Mode_Out_PP,
.GPIO_Pin = LSENS_A_PIN | LSENS_K_PIN,
.GPIO_Speed = GPIO_Speed_2MHz
};
uint16_t lsens_val;
static uint8_t lsens_mode = LSENS_READING_IDLE;
uint8_t lsens_wait;
uint8_t lsens_coarse = 1;
void adc_init()
{
ADC_InitTypeDef adc = {0};
RCC_ADCCLKConfig(RCC_PCLK2_Div4);
ADC_DeInit(ADC1);
adc.ADC_Mode = ADC_Mode_Independent;
adc.ADC_ScanConvMode = DISABLE;
adc.ADC_ContinuousConvMode = DISABLE;
adc.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
adc.ADC_DataAlign = ADC_DataAlign_Right;
adc.ADC_NbrOfChannel = 1;
ADC_Init(ADC1, &adc);
ADC_RegularChannelConfig(ADC1, LSENS_ADC_CH, 1, ADC_SampleTime_239Cycles5);
ADC_Cmd(ADC1, ENABLE);
}
void adc_convert()
{
ADC_SoftwareStartConvCmd(ADC1, ENABLE);
}
void adc_read()
{
uint16_t timeout = 0xfff;
while((!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC)) && timeout) timeout--;
if (timeout) {
lsens_val = ADC_GetConversionValue(ADC1);
}
}
void adc_set_mode_lsens(uint8_t mode)
{
lsens_mode = mode;
if (mode == LSENS_OUTPUT) {
lsens_gpio.GPIO_Pin = LSENS_A_PIN | LSENS_K_PIN;
lsens_gpio.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(LSENS_PORT, &lsens_gpio);
}
}
uint8_t adc_get_mode_lsens()
{
return lsens_mode;
}
static void lsens_start()
{
// set anode and cathode low
LSENS_PORT->BCR = LSENS_A_PIN | LSENS_K_PIN;
adc_set_mode_lsens(LSENS_READING_START);
// set cathode high, let it charge
LSENS_PORT->BSHR = LSENS_K_PIN;
// set anode low
lsens_gpio.GPIO_Pin = LSENS_A_PIN;
lsens_gpio.GPIO_Mode = GPIO_Mode_IPD;
GPIO_Init(LSENS_PORT, &lsens_gpio);
// set cathode as analog input
lsens_gpio.GPIO_Pin = LSENS_K_PIN;
lsens_gpio.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(LSENS_PORT, &lsens_gpio);
}
static void lsens_stop()
{
lsens_gpio.GPIO_Pin = LSENS_A_PIN | LSENS_K_PIN;
lsens_gpio.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(LSENS_PORT, &lsens_gpio);
lsens_mode = LSENS_READING_IDLE;
}
void adc_process_lsens()
{
if (lsens_mode != LSENS_OUTPUT) {
// do what needs to be done by me to defeat the light enemys
switch (lsens_mode) {
case LSENS_READING_IDLE: {
// prepare LED, wait a little bit
lsens_start();
adc_convert();
lsens_wait = lsens_coarse;
lsens_mode = LSENS_READING_START;
break;
}
case LSENS_READING_START: {
if (!lsens_wait) {
// convert the LED
adc_convert();
lsens_mode = LSENS_READING_WAIT;
}
lsens_wait--;
break;
}
case LSENS_READING_WAIT: {
// read the light sensor value
adc_read();
lsens_stop();
// calculate adjustments
if (lsens_val > LSENS_COARSE_UP) {
lsens_coarse++;
if (lsens_coarse > 0x3f) lsens_coarse = 0x3f;
} else if (lsens_val < LSENS_COARSE_DOWN) {
if (lsens_coarse) lsens_coarse--;
}
lsens_wait = 255 - lsens_coarse;
// wait a bit before doing it again
lsens_mode = LSENS_READING_TIMEOUT;
break;
}
case LSENS_READING_TIMEOUT: {
if (!lsens_wait) {
// do it all again
lsens_mode = LSENS_READING_IDLE;
}
lsens_wait--;
}
}
}
}
uint16_t adc_get_lsens()
{
return lsens_val;
}
uint8_t adc_get_lsens_coarse()
{
return lsens_coarse;
}
uint8_t adc_get_brightness(uint8_t level)
{
if (!level) {
// are you outside? why? it's too fucking hot
// we'll shut down when in the presence of big nuclear fire
if (adc_get_lsens() < 400) {
// yup, outside or in a spotlight at 3ft away or something
return 0;
}
}
if (level >= sizeof(led_brightness_map)) {
return led_brightness_map[sizeof(led_brightness_map) - 1];
}
return led_brightness_map[level];
}

50
gat_stand_fw/user/src/adc.h Normal file
View File

@ -0,0 +1,50 @@
/*
* lightsense.h
*
* Created on: Oct 18, 2024
* Author: true
*/
#ifndef USER_SRC_ADC_H_
#define USER_SRC_ADC_H_
#define LSENS_DARK_THRESHOLD 0x7ff // baseline minimum value reading achieved in darkness
#define LSENS_PORT GPIOA
#define LSENS_A_PIN GPIO_Pin_2
#define LSENS_K_PIN GPIO_Pin_3
#define LSENS_ADC_CH ADC_Channel_3
#define LSENS_COARSE_UP 0x690 // counts higher than this increase lsens_coarse, maximum 64
#define LSENS_COARSE_DOWN 0x5a0 // counts lower than this decrease lsens_coarse, minimum 1
enum lsens_mode {
LSENS_READING_IDLE = 0,
LSENS_READING_START,
LSENS_READING_WAIT,
LSENS_READING_TIMEOUT,
LSENS_OUTPUT = 0xff
};
void adc_init();
void adc_convert();
void adc_read();
void adc_set_mode_lsens(uint8_t mode);
uint8_t adc_get_mode_lsens();
void adc_process_lsens();
uint16_t adc_get_lsens();
uint8_t adc_get_lsens_coarse();
uint8_t adc_get_brightness(uint8_t level);
#endif /* USER_SRC_ADC_H_ */

6
gat_stand_fw/user/src/btn.c
View File

@ -43,19 +43,15 @@ void btn_init()
void btn_poll()
{
uint8_t i;
uint8_t r;
uint8_t ignore;
uint8_t pushed;
for (i = 0; i < BTN_COUNT; i++) {
pushed = 0;
ignore = btn[i]._mask & BTN_IGNORE;
r = BTN_PORT->INDR & (1 << (btn[i]._pintype & BTN_PIN_MASK));
// active low type buttons
if (!r) pushed = 1;
pushed = BTN_PORT->INDR & (1 << (btn[i]._pintype & BTN_PIN_MASK)) ? 0 : 1;
if (pushed) {
// hold counter

38
gat_stand_fw/user/src/port_pwr.c
View File

@ -17,15 +17,21 @@
#define GAT_ON_FLAG (1 << 0)
#define USB2_ON_FLAG (1 << 1)
#define INIT_FLAG (0xa0 << 8)
#define INIT_FLAG (0xaf << 8)
static uint8_t port_pwr_state;
static uint16_t port_pwr_state;
static uint8_t gat_oc_state_latch = 0;
void port_pwr_commit_bkp()
{
BKP_WriteBackupRegister(PORT_PWR_STATE_DR, port_pwr_state);
RTC_WaitForLastTask();
}
void gat_on()
{
if (gat_oc_state_latch) return;
@ -33,7 +39,7 @@ void gat_on()
GAT_EN_PORT->BSHR = GAT_EN_PIN;
port_pwr_state |= GAT_ON_FLAG;
BKP_WriteBackupRegister(PORT_PWR_STATE_DR, port_pwr_state);
port_pwr_commit_bkp();
}
void gat_off()
@ -41,7 +47,7 @@ void gat_off()
GAT_EN_PORT->BCR = GAT_EN_PIN;
port_pwr_state &= ~GAT_ON_FLAG;
BKP_WriteBackupRegister(PORT_PWR_STATE_DR, port_pwr_state);
port_pwr_commit_bkp();
}
uint8_t gat_pwr_state()
@ -65,16 +71,21 @@ void gat_toggle()
else gat_on();
}
void usb2_on()
{
USB2_EN_PORT->BSHR = USB2_EN_PIN;
port_pwr_state |= USB2_ON_FLAG;
BKP_WriteBackupRegister(PORT_PWR_STATE_DR, port_pwr_state);
port_pwr_commit_bkp();
}
void usb2_off()
{
USB2_EN_PORT->BCR = USB2_EN_PIN;
port_pwr_state &= ~USB2_ON_FLAG;
BKP_WriteBackupRegister(PORT_PWR_STATE_DR, port_pwr_state);
port_pwr_commit_bkp();
}
uint8_t usb2_pwr_state()
@ -84,20 +95,25 @@ uint8_t usb2_pwr_state()
void usb2_toggle()
{
if (usb2_pwr_state()) gat_off();
else gat_on();
if (usb2_pwr_state()) usb2_off();
else usb2_on();
}
void port_pwr_init()
{
port_pwr_state = BKP_ReadBackupRegister(PORT_PWR_STATE_DR);
RTC_WaitForLastTask();
if ((port_pwr_state & INIT_FLAG) != INIT_FLAG) {
// no battery retention.
// automatically turn on all outputs
port_pwr_state |= INIT_FLAG;
gat_on();
usb2_on();
port_pwr_state = INIT_FLAG | USB2_ON_FLAG | GAT_ON_FLAG;
// and commit state flags
port_pwr_commit_bkp();
}
if (port_pwr_state & GAT_ON_FLAG) gat_on();
if (port_pwr_state & USB2_ON_FLAG) usb2_on();
}

45
gat_stand_fw/user/src/rgbled.c
View File

@ -17,9 +17,10 @@
#define GRN 1
#define BLU 2
#define BRT_RED 200
#define BRT_GRN 100
#define BRT_BLU 200
#define BRT_RED 80
#define BRT_GRN 32
#define BRT_BLU 36
#define BRT_OFF 0
#define RGBLED_TIM TIM2
@ -63,20 +64,17 @@ void rgbled_set()
}
}
RGBLED_TIM->CH1CVR = state[RED] ? BRT_RED : 0;
RGBLED_TIM->CH2CVR = state[GRN] ? BRT_GRN : 0;
RGBLED_TIM->CH3CVR = state[BLU] ? BRT_BLU : 0;
RGBLED_TIM->CH1CVR = state[BLU] ? BRT_BLU : BRT_OFF;
RGBLED_TIM->CH2CVR = state[GRN] ? BRT_GRN : BRT_OFF;
RGBLED_TIM->CH3CVR = state[RED] ? BRT_RED : BRT_OFF;
}
void rgbled_update()
{
uint16_t w;
// VCR flash if clock isn't set
w = BKP_ReadBackupRegister(RTC_STATE_DR);
switch (w) {
case RTC_STATE_UNINITIALIZED: {
flash_timeout[BLU] = 254;
switch (rtc_state) {
case RTC_STATE_CLOCK_NOT_SET: {
flash_timeout[BLU] = 48;
break;
}
default: {
@ -86,7 +84,9 @@ void rgbled_update()
}
flash_timeout[GRN] = gat_pwr_state() ? 0 : 0xff;
flash_timeout[RED] = gat_oc_state() ? 50 : 0xff;
flash_timeout[RED] = gat_oc_state() ? 16 : 0xff;
rgbled_set();
}
void rgbled_init()
@ -102,18 +102,19 @@ void rgbled_init()
pwm.TIM_OCMode = TIM_OCMode_PWM1;
pwm.TIM_OutputState = TIM_OutputState_Enable;
pwm.TIM_Pulse = 0;
pwm.TIM_OCPolarity = TIM_OCPolarity_High;
pwm.TIM_Pulse = BRT_OFF;
pwm.TIM_OCPolarity = TIM_OCPolarity_Low;
TIM_OC1PreloadConfig(RGBLED_TIM, TIM_OCPreload_Disable);
TIM_OC2PreloadConfig(RGBLED_TIM, TIM_OCPreload_Disable);
TIM_OC3PreloadConfig(RGBLED_TIM, TIM_OCPreload_Disable);
TIM_ARRPreloadConfig(RGBLED_TIM, ENABLE);
TIM_OC1Init(RGBLED_TIM, &pwm);
TIM_OC2Init(RGBLED_TIM, &pwm);
TIM_OC3Init(RGBLED_TIM, &pwm);
TIM_CtrlPWMOutputs(RGBLED_TIM, ENABLE);
TIM_OC1PreloadConfig(RGBLED_TIM, TIM_OCPreload_Disable);
TIM_ARRPreloadConfig(RGBLED_TIM, ENABLE);
TIM_Cmd(RGBLED_TIM, ENABLE);
RGBLED_TIM->CH1CVR = 0;
RGBLED_TIM->CH2CVR = 0;
RGBLED_TIM->CH3CVR = 0;
RGBLED_TIM->CNT = 0;
TIM_Cmd(RGBLED_TIM, ENABLE);
}

5
gat_stand_fw/user/src/rgbled.h
View File

@ -11,12 +11,13 @@
#define RGBLED_PORT GPIOA
#define RGBLED_PIN_R GPIO_Pin_0
#define RGBLED_PIN_B GPIO_Pin_0
#define RGBLED_PIN_G GPIO_Pin_1
#define RGBLED_PIN_B GPIO_Pin_2
#define RGBLED_PIN_R GPIO_Pin_2
void rgbled_init();
void rgbled_update();

4
gat_stand_fw/user/src/rtc.c
View File

@ -116,6 +116,7 @@ int8_t rtc_init()
// get RTC state
// if things aren't configured it'll be initialized in a moment
rtc_state = BKP_ReadBackupRegister(RTC_STATE_DR);
RTC_WaitForLastTask();
// is RTC already configured?
if (BKP_ReadBackupRegister(RTC_INIT_DR) != RTC_INIT_PATTERN) {
@ -150,11 +151,14 @@ int8_t rtc_init()
rtc_state = RTC_STATE_CLOCK_NOT_SET;
BKP_WriteBackupRegister(RTC_STATE_DR, rtc_state);
RTC_WaitForLastTask();
BKP_WriteBackupRegister(RTC_INIT_DR, RTC_INIT_PATTERN);
// RTC_NVIC_Config();
// RTC_Get();
}
RTC_WaitForLastTask();
return 0;
}

12
gat_stand_fw/user/src/rtc.h
View File

@ -13,6 +13,14 @@
/* a small note about backup registers:
*
* the datasheet clearly states there are 42 16-bit registers.
* it does not cut out any exception for CH32V203 except CH32V203RB.
* however, the reference manual states that registers 11-42 are only
* for the _D8 chips, and not the _D6 V4B chips like this one.
* thus we only have _10_ backup registers, not 42.
*/
#define RTC_INIT_DR BKP_DR1
#define RTC_STATE_DR BKP_DR2
@ -35,6 +43,10 @@ typedef struct RTClock {
extern uint8_t rtc_state;
int8_t rtc_init();
int8_t rtc_set_clock(struct RTClock *c);

4
gat_stand_fw/user/system_ch32v20x.c
View File

@ -26,9 +26,9 @@
//#define SYSCLK_FREQ_120MHz_HSE 120000000
//#define SYSCLK_FREQ_144MHz_HSE 144000000
//#define SYSCLK_FREQ_HSI HSI_VALUE
//#define SYSCLK_FREQ_48MHz_HSI 48000000
#define SYSCLK_FREQ_48MHz_HSI 48000000
//#define SYSCLK_FREQ_56MHz_HSI 56000000
#define SYSCLK_FREQ_72MHz_HSI 72000000
//#define SYSCLK_FREQ_72MHz_HSI 72000000
//#define SYSCLK_FREQ_96MHz_HSI 96000000
//#define SYSCLK_FREQ_120MHz_HSI 120000000
//#define SYSCLK_FREQ_144MHz_HSI 144000000