/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "stm32f1xx_hal.h"
-#include "usb.h"
/* USER CODE BEGIN Includes */
+#include "util.h"
+#include "usb.h"
+#include "app.h"
+
+#include <string.h>
/* USER CODE END Includes */
static void MX_I2C1_Init(void);
static void MX_I2C2_Init(void);
static void MX_USB_PCD_Init(void);
+static void MX_TIM4_Init(void);
/* USER CODE BEGIN PFP */
/* Private function prototypes -----------------------------------------------*/
/* USER CODE BEGIN 0 */
-#include <stdarg.h>
-#include <stdint.h>
-#include <string.h>
-
-void semi_put_char(char c)
-{
- // This is tricky, we need to work around GCC bugs
- volatile char cc = c;
- asm volatile (
- "mov r0, #0x03\n" /* SYS_WRITEC */
- "mov r1, %[msg]\n"
- "bkpt #0xAB\n"
- :
- : [msg] "r" (&cc)
- : "r0", "r1"
- );
-}
-
-void semi_write_string(char *c)
-{
- asm volatile (
- "mov r0, #0x04\n" /* SYS_WRITE0 */
- "mov r1, %[msg]\n"
- "bkpt #0xAB\n"
- :
- : [msg] "r" (c)
- : "r0", "r1"
- );
-}
-
-void debug_putc(int c)
-{
- static char debug_buf[16];
- static int debug_i;
- debug_buf[debug_i++] = c;
- if (c == '\n' || debug_i >= sizeof(debug_buf) - 1)
- {
- debug_buf[debug_i] = 0;
- semi_write_string(debug_buf);
- debug_i = 0;
- }
-}
-
-void debug_puts(const char *s)
-{
- while (*s)
- debug_putc(*s++);
-}
-
-enum printf_flags {
- PF_ZERO_PAD = 1,
- PF_SIGNED = 2,
- PF_NEGATIVE = 4,
- PF_UPPERCASE = 8,
- PF_LEFT = 16,
-};
-
-static void printf_string(const char *s, uint width, uint flags)
-{
- uint len = strlen(s);
- uint pad = (len < width) ? width - len : 0;
- char pad_char = (flags & PF_ZERO_PAD) ? '0' : ' ';
-
- if (flags & PF_LEFT)
- debug_puts(s);
- while (pad--)
- debug_putc(pad_char);
- if (!(flags & PF_LEFT))
- debug_puts(s);
-}
-
-static void printf_number(uint i, uint width, uint flags, uint base)
-{
- char buf[16];
- char *w = buf + sizeof(buf);
-
- if (flags & PF_SIGNED)
- {
- if ((int) i < 0)
- {
- i = - (int) i;
- flags |= PF_NEGATIVE;
- }
- }
-
- *--w = 0;
- do
- {
- uint digit = i % base;
- if (digit < 10)
- *--w = '0' + digit;
- else
- *--w = ((flags & PF_UPPERCASE) ? 'A' : 'a') + digit - 10;
- i /= base;
- }
- while (i);
-
- if (flags & PF_NEGATIVE)
- *--w = '-';
-
- printf_string(w, width, flags);
-}
-
-void debug_printf(const char *fmt, ...)
-{
- va_list args;
- va_start(args, fmt);
-
- while (*fmt)
- {
- int c = *fmt++;
- if (c != '%')
- {
- debug_putc(c);
- continue;
- }
-
- uint width = 0;
- uint flags = 0;
-
- if (*fmt == '-')
- {
- fmt++;
- flags |= PF_LEFT;
- }
-
- if (*fmt == '0')
- {
- fmt++;
- flags |= PF_ZERO_PAD;
- }
-
- while (*fmt >= '0' && *fmt <= '9')
- width = 10*width + *fmt++ - '0';
-
- c = *fmt++;
- switch (c)
- {
- case 'd':
- printf_number(va_arg(args, int), width, flags | PF_SIGNED, 10);
- break;
- case 'u':
- printf_number(va_arg(args, int), width, flags, 10);
- break;
- case 'X':
- flags |= PF_UPPERCASE;
- // fall-thru
- case 'x':
- printf_number(va_arg(args, int), width, flags, 16);
- break;
- case 's':
- printf_string(va_arg(args, char *), width, flags);
- break;
- default:
- debug_putc(c);
- continue;
- }
- }
-
- va_end(args);
-}
-
/* USER CODE END 0 */
/**
SystemClock_Config();
/* USER CODE BEGIN SysInit */
+ usb_init(&usb, &hpcd_USB_FS);
/* USER CODE END SysInit */
/* Initialize all configured peripherals */
MX_GPIO_Init();
+
+ // A hack to let USB host reset us
+ LL_GPIO_InitTypeDef gpio;
+ gpio.Pin = LL_GPIO_PIN_12 | LL_GPIO_PIN_13;
+ gpio.Mode = LL_GPIO_MODE_OUTPUT;
+ gpio.Speed = LL_GPIO_SPEED_FREQ_HIGH;
+ gpio.OutputType = LL_GPIO_OUTPUT_OPENDRAIN;
+ LL_GPIO_Init(GPIOA, &gpio);
+ LL_GPIO_ResetOutputPin(GPIOA, LL_GPIO_PIN_12);
+ LL_GPIO_ResetOutputPin(GPIOA, LL_GPIO_PIN_13);
+ LL_mDelay(1000);
+
MX_I2C1_Init();
MX_I2C2_Init();
MX_USB_PCD_Init();
+ MX_TIM4_Init();
/* USER CODE BEGIN 2 */
- usb_init(&usb, &hpcd_USB_FS);
+ display_init();
+ usb_start(&usb);
+
+ LL_TIM_EnableCounter(TIM4);
+ LL_TIM_EnableIT_UPDATE(TIM4);
+ LL_TIM_GenerateEvent_UPDATE(TIM4);
+
+ {
+ byte buf[5] = { 0xff, 0xff, 10, 0xff, 0xff };
+ display_buffer(buf);
+ }
/* USER CODE END 2 */
/* Infinite loop */
/* USER CODE BEGIN WHILE */
- int cnt = 0;
while (1)
{
- LL_GPIO_SetOutputPin(LED_GPIO_Port, LED_Pin);
- LL_mDelay(500);
- LL_GPIO_ResetOutputPin(LED_GPIO_Port, LED_Pin);
- LL_mDelay(500);
- debug_printf("Counter = %d\n", cnt++);
+ if (rx_packet_state == 1 && !tx_packet_state)
+ {
+ display_buffer(rx_packet);
+ tx_packet_state = 1;
+ usb_ep_send(&usb, 0x82, tx_packet, 8);
+ rx_packet_state = 0;
+ usb_ep_receive(&usb, 0x01, rx_packet, 64);
+ }
+
+ // debug_printf("Counter = %d\n", cnt);
+ // display_counter(cnt);
+
+ static byte led_state;
+ if (led_state)
+ LL_GPIO_SetOutputPin(LED_GPIO_Port, LED_Pin);
+ else
+ LL_GPIO_ResetOutputPin(LED_GPIO_Port, LED_Pin);
+ led_state ^= 1;
+
+ __WFI();
/* USER CODE END WHILE */
}
+/* TIM4 init function */
+static void MX_TIM4_Init(void)
+{
+
+ LL_TIM_InitTypeDef TIM_InitStruct;
+ LL_TIM_OC_InitTypeDef TIM_OC_InitStruct;
+
+ /* Peripheral clock enable */
+ LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_TIM4);
+
+ /* TIM4 interrupt Init */
+ NVIC_SetPriority(TIM4_IRQn, NVIC_EncodePriority(NVIC_GetPriorityGrouping(),0, 0));
+ NVIC_EnableIRQ(TIM4_IRQn);
+
+ TIM_InitStruct.Prescaler = 7200;
+ TIM_InitStruct.CounterMode = LL_TIM_COUNTERMODE_UP;
+ TIM_InitStruct.Autoreload = 1000;
+ TIM_InitStruct.ClockDivision = LL_TIM_CLOCKDIVISION_DIV1;
+ LL_TIM_Init(TIM4, &TIM_InitStruct);
+
+ LL_TIM_DisableARRPreload(TIM4);
+
+ LL_TIM_SetClockSource(TIM4, LL_TIM_CLOCKSOURCE_INTERNAL);
+
+ TIM_OC_InitStruct.OCMode = LL_TIM_OCMODE_FROZEN;
+ TIM_OC_InitStruct.OCState = LL_TIM_OCSTATE_DISABLE;
+ TIM_OC_InitStruct.OCNState = LL_TIM_OCSTATE_DISABLE;
+ TIM_OC_InitStruct.CompareValue = 0;
+ TIM_OC_InitStruct.OCPolarity = LL_TIM_OCPOLARITY_HIGH;
+ LL_TIM_OC_Init(TIM4, LL_TIM_CHANNEL_CH1, &TIM_OC_InitStruct);
+
+ LL_TIM_OC_DisableFast(TIM4, LL_TIM_CHANNEL_CH1);
+
+ LL_TIM_SetTriggerOutput(TIM4, LL_TIM_TRGO_RESET);
+
+ LL_TIM_DisableMasterSlaveMode(TIM4);
+
+}
+
/* USB init function */
static void MX_USB_PCD_Init(void)
{
+
hpcd_USB_FS.Instance = USB;
hpcd_USB_FS.Init.dev_endpoints = 8;
hpcd_USB_FS.Init.speed = PCD_SPEED_FULL;
{
_Error_Handler(__FILE__, __LINE__);
}
+
}
/** Configure pins as
projects / home-hw.git / blobdiff