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LibrePilot/flight/Bootloaders/OpenPilot/main.c

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/**
******************************************************************************
* @addtogroup OpenPilotBL OpenPilot BootLoader
* @brief These files contain the code to the OpenPilot MB Bootloader.
*
* @{
* @file main.c
* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
* @brief This is the file with the main function of the OpenPilot BootLoader
* @see The GNU Public License (GPL) Version 3
*
*****************************************************************************/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Bootloader Includes */
#include <pios.h>
#include "pios_opahrs.h"
#include "stopwatch.h"
#include "op_dfu.h"
#include "usb_lib.h"
#include "pios_iap.h"
#include "ssp.h"
#include "fifo_buffer.h"
/* Prototype of PIOS_Board_Init() function */
extern void PIOS_Board_Init(void);
extern void FLASH_Download();
#define BSL_HOLD_STATE ((PIOS_USB_DETECT_GPIO_PORT->IDR & PIOS_USB_DETECT_GPIO_PIN) ? 0 : 1)
/* Private typedef -----------------------------------------------------------*/
typedef void (*pFunction)(void);
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
pFunction Jump_To_Application;
uint32_t JumpAddress;
/// LEDs PWM
uint32_t period1 = 50; // *100 uS -> 5 mS
uint32_t sweep_steps1 = 100; // * 5 mS -> 500 mS
uint32_t period2 = 50; // *100 uS -> 5 mS
uint32_t sweep_steps2 = 100; // * 5 mS -> 500 mS
////////////////////////////////////////
uint8_t tempcount = 0;
/// SSP SECTION
/// SSP TIME SOURCE
#define SSP_TIMER TIM7
uint32_t ssp_time = 0;
#define MAX_PACKET_DATA_LEN 255
#define MAX_PACKET_BUF_SIZE (1+1+MAX_PACKET_DATA_LEN+2)
#define UART_BUFFER_SIZE 1024
uint8_t rx_buffer[UART_BUFFER_SIZE] __attribute__ ((aligned(4)));
// align to 32-bit to try and provide speed improvement;
// master buffers...
uint8_t SSP_TxBuf[MAX_PACKET_BUF_SIZE];
uint8_t SSP_RxBuf[MAX_PACKET_BUF_SIZE];
void SSP_CallBack(uint8_t *buf, uint16_t len);
int16_t SSP_SerialRead(void);
void SSP_SerialWrite( uint8_t);
uint32_t SSP_GetTime(void);
PortConfig_t SSP_PortConfig = { .rxBuf = SSP_RxBuf,
.rxBufSize = MAX_PACKET_DATA_LEN, .txBuf = SSP_TxBuf,
.txBufSize = MAX_PACKET_DATA_LEN, .max_retry = 10, .timeoutLen = 1000,
.pfCallBack = SSP_CallBack, .pfSerialRead = SSP_SerialRead,
.pfSerialWrite = SSP_SerialWrite, .pfGetTime = SSP_GetTime, };
Port_t ssp_port;
t_fifo_buffer ssp_buffer;
/* Extern variables ----------------------------------------------------------*/
DFUStates DeviceState;
DFUPort ProgPort;
int16_t status = 0;
uint8_t JumpToApp = FALSE;
uint8_t GO_dfu = FALSE;
uint8_t USB_connected = FALSE;
uint8_t User_DFU_request = FALSE;
static uint8_t mReceive_Buffer[64];
/* Private function prototypes -----------------------------------------------*/
uint32_t LedPWM(uint32_t pwm_period, uint32_t pwm_sweep_steps, uint32_t count);
uint8_t processRX();
void jump_to_app();
uint32_t sspTimeSource();
#define BLUE LED1
#define RED LED2
#define LED_PWM_TIMER TIM6
int main() {
/* NOTE: Do NOT modify the following start-up sequence */
/* Any new initialization functions should be added in OpenPilotInit() */
/* Brings up System using CMSIS functions, enables the LEDs. */
PIOS_SYS_Init();
if (BSL_HOLD_STATE == 0)
USB_connected = TRUE;
PIOS_IAP_Init();
if (PIOS_IAP_CheckRequest() == TRUE) {
PIOS_Board_Init();
PIOS_DELAY_WaitmS(1000);
User_DFU_request = TRUE;
PIOS_IAP_ClearRequest();
}
GO_dfu = (USB_connected == TRUE) || (User_DFU_request == TRUE);
if (GO_dfu == TRUE) {
if (USB_connected)
ProgPort = Usb;
else
ProgPort = Serial;
PIOS_Board_Init();
if (User_DFU_request == TRUE)
DeviceState = DFUidle;
else
DeviceState = BLidle;
STOPWATCH_Init(100, LED_PWM_TIMER);
if (ProgPort == Serial) {
fifoBuf_init(&ssp_buffer, rx_buffer, UART_BUFFER_SIZE);
STOPWATCH_Init(100, SSP_TIMER);//nao devia ser 1000?
STOPWATCH_Reset(SSP_TIMER);
ssp_Init(&ssp_port, &SSP_PortConfig);
}
PIOS_OPAHRS_ForceSlaveSelected(true);
} else
JumpToApp = TRUE;
STOPWATCH_Reset(LED_PWM_TIMER);
while (TRUE) {
if (ProgPort == Serial) {
ssp_ReceiveProcess(&ssp_port);
status = ssp_SendProcess(&ssp_port);
while ((status != SSP_TX_IDLE) && (status != SSP_TX_ACKED)) {
ssp_ReceiveProcess(&ssp_port);
status = ssp_SendProcess(&ssp_port);
}
}
if (JumpToApp == TRUE)
jump_to_app();
//pwm_period = 50; // *100 uS -> 5 mS
//pwm_sweep_steps =100; // * 5 mS -> 500 mS
switch (DeviceState) {
case Last_operation_Success:
case uploadingStarting:
case DFUidle:
period1 = 50;
sweep_steps1 = 100;
PIOS_LED_Off(RED);
period2 = 0;
break;
case uploading:
period1 = 50;
sweep_steps1 = 100;
period2 = 25;
sweep_steps2 = 50;
break;
case downloading:
period1 = 25;
sweep_steps1 = 50;
PIOS_LED_Off(RED);
period2 = 0;
break;
case BLidle:
period1 = 0;
PIOS_LED_On(BLUE);
period2 = 0;
break;
default://error
period1 = 50;
sweep_steps1 = 100;
period2 = 50;
sweep_steps2 = 100;
}
if (period1 != 0) {
if (LedPWM(period1, sweep_steps1, STOPWATCH_ValueGet(LED_PWM_TIMER)))
PIOS_LED_On(BLUE);
else
PIOS_LED_Off(BLUE);
} else
PIOS_LED_On(BLUE);
if (period2 != 0) {
if (LedPWM(period2, sweep_steps2, STOPWATCH_ValueGet(LED_PWM_TIMER)))
PIOS_LED_On(RED);
else
PIOS_LED_Off(RED);
} else
PIOS_LED_Off(RED);
if (STOPWATCH_ValueGet(LED_PWM_TIMER) > 100 * 50 * 100)
STOPWATCH_Reset(LED_PWM_TIMER);
if ((STOPWATCH_ValueGet(LED_PWM_TIMER) > 60000) && (DeviceState
== BLidle))
JumpToApp = TRUE;
processRX();
DataDownload(start);
}
}
void jump_to_app() {
if (((*(__IO uint32_t*) START_OF_USER_CODE) & 0x2FFE0000) == 0x20000000) { /* Jump to user application */
FLASH_Lock();
RCC_APB2PeriphResetCmd(0xffffffff, ENABLE);
RCC_APB1PeriphResetCmd(0xffffffff, ENABLE);
RCC_APB2PeriphResetCmd(0xffffffff, DISABLE);
RCC_APB1PeriphResetCmd(0xffffffff, DISABLE);
_SetCNTR(0); // clear interrupt mask
_SetISTR(0); // clear all requests
JumpAddress = *(__IO uint32_t*) (START_OF_USER_CODE + 4);
Jump_To_Application = (pFunction) JumpAddress;
/* Initialize user application's Stack Pointer */
__set_MSP(*(__IO uint32_t*) START_OF_USER_CODE);
Jump_To_Application();
} else {
DeviceState = failed_jump;
return;
}
}
uint32_t LedPWM(uint32_t pwm_period, uint32_t pwm_sweep_steps, uint32_t count) {
uint32_t pwm_duty = ((count / pwm_period) % pwm_sweep_steps)
/ (pwm_sweep_steps / pwm_period);
if ((count % (2 * pwm_period * pwm_sweep_steps)) > pwm_period
* pwm_sweep_steps)
pwm_duty = pwm_period - pwm_duty; // negative direction each 50*100 ticks
return ((count % pwm_period) > pwm_duty) ? 1 : 0;
}
uint8_t processRX() {
if (ProgPort == Usb) {
while (PIOS_COM_ReceiveBufferUsed(PIOS_COM_TELEM_USB) >= 63) {
for (int32_t x = 0; x < 63; ++x) {
mReceive_Buffer[x] = PIOS_COM_ReceiveBuffer(PIOS_COM_TELEM_USB);
}
processComand(mReceive_Buffer);
}
} else if (ProgPort == Serial) {
if (fifoBuf_getUsed(&ssp_buffer) >= 63) {
for (int32_t x = 0; x < 63; ++x) {
mReceive_Buffer[x] = fifoBuf_getByte(&ssp_buffer);
}
processComand(mReceive_Buffer);
}
}
return TRUE;
}
uint32_t sspTimeSource() {
if (STOPWATCH_ValueGet(SSP_TIMER) > 5000) {
++ssp_time;
STOPWATCH_Reset(SSP_TIMER);
}
return ssp_time;
}
void SSP_CallBack(uint8_t *buf, uint16_t len) {
fifoBuf_putData(&ssp_buffer, buf, len);
}
int16_t SSP_SerialRead(void) {
if (PIOS_COM_ReceiveBufferUsed(PIOS_COM_TELEM_RF) > 0) {
return PIOS_COM_ReceiveBuffer(PIOS_COM_TELEM_RF);
} else
return -1;
}
void SSP_SerialWrite(uint8_t value) {
PIOS_COM_SendChar(PIOS_COM_TELEM_RF, value);
}
uint32_t SSP_GetTime(void) {
return sspTimeSource();
}