FeatherHAB/wsprhab Changeset - b113d7d76caf

Changeset - b113d7d76caf

Parent rev.

Child rev.

[Not reviewed]

default

0 3 0

Ethan Zonca - 9 years ago 2016-10-09 14:19:08
ez@ethanzonca.com

Implementation of faster baud rate and new message

3 files changed with 65 insertions and 26 deletions:

src/gps.c

src/main.c

src/uart.c

0 comments (0 inline, 0 general)

src/gps.c

➞

Show inline comments

@@ @@ -40,7 +40,6 @@ void gps_init() @@
    // done in poweron uart_init();
 	gps_poweron();
 	HAL_Delay(500);
 //	// uart1 ubx only
 //
@@ @@ -212,36 +211,61 @@ void gps_update_time(uint8_t* hour, uint @@
 void gps_check_lock(uint8_t* lock, uint8_t* sats)
+{
     // Construct the request to the GPS
     uint8_t request[8] = {0xB5, 0x62, 0x01, 0x06, 0x00, 0x00, 0x07, 0x16};
     uint8_t request[8] = {0xB5, 0x62, 0x01, 0x07, 0x00, 0x00, 0xFF, 0xFF};
     volatile uint8_t check_a = 0;
     volatile uint8_t check_b = 0;
     for(uint8_t i = 2; i<6; i++)
+    {
     	check_a += request[i];
     	check_b += check_a;
+    }
     request[6] = check_a;
     request[7] = check_b;
     uint8_t flushed = uart_gethandle()->Instance->RDR;
     HAL_UART_Transmit(uart_gethandle(), request, 8, 100);
     // Get the message back from the GPS
     uint8_t buf[60];
     for(uint8_t i=0; i<60; i++)
     uint8_t buf[100];
     for(uint8_t i=0; i<100; i++)
     	buf[i] = 0xaa;
     volatile HAL_StatusTypeDef res = HAL_UART_Receive(uart_gethandle(), buf, 60, 3000);
     // Verify the sync and header bits
 //    if( buf[0] != 0xB5 || buf[1] != 0x62 )
 //        led_set(LED_RED, 1);
 //    if( buf[2] != 0x01 || buf[3] != 0x06 )
 //        led_set(LED_RED, 1);
     volatile HAL_StatusTypeDef res = HAL_UART_Receive(uart_gethandle(), buf, 100, 3000);
     // Check 60 bytes minus SYNC and CHECKSUM (4 bytes)
-    if( !_gps_verify_checksum(&buf[2], 56) )
+    if( !_gps_verify_checksum(&buf[2], 96) )
         led_blink(2);
     // Return the value if GPSfixOK is set in 'flags'
     if( buf[17] & 0x01 )
         *lock = buf[16];
     else
         *lock = 0;
     //volatile uint32_t gpstime_ms = (buf[6+0] << 24) | (buf[6+1] << 16) | buf[6+2] << 8) | (buf[6+3]);
     volatile uint8_t month = buf[6+6];
     volatile uint8_t day = buf[6+7];
     volatile uint8_t hour = buf[6+8];
     volatile uint8_t minute = buf[6+9];
     volatile uint8_t second = buf[6+10];
     volatile uint8_t valid = buf[6+11] & 0b1111;
     volatile uint8_t fixtype = buf[6+20];
     volatile uint8_t sats_in_solution = buf[6+23];
     *sats = buf[53];
     volatile uint32_t longitude = (buf[6+24] << 24) | (buf[6+25] << 16) | (buf[6+26] << 8) | (buf[6+27]);
     volatile uint32_t latitude = (buf[6+28] << 24) | (buf[6+29] << 16) | (buf[6+30] << 8) | (buf[6+31]);
     volatile uint32_t altitude_sealevel = (buf[6+36] << 24) | (buf[6+37] << 16) | (buf[6+38] << 8) | (buf[6+39]);
     volatile uint32_t groundspeed = (buf[6+60] << 24) | (buf[6+61] << 16) | (buf[6+62] << 8) | (buf[6+63]);
     volatile uint16_t pdop = (buf[6+76] << 8) | (buf[6+77]);
 //
 //    // Return the value if GPSfixOK is set in 'flags'
 //    if( buf[17] & 0x01 )
 //        *lock = buf[16];
 //    else
 //        *lock = 0;
     *lock = fixtype;
     *sats = sats_in_solution;
+}
 /**

src/main.c

➞

Show inline comments

@@ @@ -43,6 +43,9 @@ int main(void) @@
     uint16_t blink_rate = BLINK_FAST;
     uint8_t state = SYSTEM_GPSACQ;
     uint32_t fixinfo_timer = 0;
     uint8_t fix_ok = 0;
     uint8_t numsats = 0;
     while (1)
+    {
@@ @@ -58,7 +61,7 @@ int main(void) @@
                 //enter_sleep();
                 // Somehow go to another state when we get an interrupt
                 state = SYSTEM_GPSACQ;
+//                state = SYSTEM_GPSACQ;
             } break;
@@ @@ -70,17 +73,19 @@ int main(void) @@
                 // TODO: probably don't power on all the time, just on state transition
 //                gps_poweron();
 //                HAL_Delay(100);
                 HAL_Delay(1000);
 //                gps_update_position();
                 uint8_t fix_ok = 0;
                 uint8_t numsats = 0;
                 gps_check_lock(&fix_ok, &numsats);
                 // Update fix status every 2 seconds
                 if(HAL_GetTick() - fixinfo_timer > 2000)
+                {
                 	gps_check_lock(&fix_ok, &numsats);
                 	fixinfo_timer = HAL_GetTick();
+                }
                 if(fix_ok)
+                if(fix_ok > 0)
+                {
                     // Disable GPS module
                     gps_poweroff();
+                    //gps_poweroff();
                     // TODO: Set RTC from GPS time
@@ @@ -100,6 +105,7 @@ int main(void) @@
             // Wait for wspr timeslot and start transmitting
             case SYSTEM_WSPRTX:
+            {
             	blink_rate = BLINK_SLOW;
                 // Wait for wspr countdown timer to expire and go to tx
 //                if(timeout_expired)
 //                {
@@ @@ -109,7 +115,7 @@ int main(void) @@
                 // Schedule next wakeup (maybe 2mins prior ot timeslot if no osc trim)
                 // Next wakeup should enter SYSTEM_GPSACQ state...
                 state = SYSTEM_IDLE;
+//                state = SYSTEM_IDLE;
             } break;

src/uart.c

➞

Show inline comments

@@ @@ -39,6 +39,15 @@ void uart_init(void) @@
     huart1.AdvancedInit.DMADisableonRxError = UART_ADVFEATURE_DMA_DISABLEONRXERROR;
     HAL_UART_Init(&huart1);
     HAL_Delay(100);
 	uint8_t switch_baud[] = "$PUBX,41,1,0003,0001,115200,0*1E\r\n";
 	HAL_UART_Transmit(uart_gethandle(), switch_baud, sizeof(switch_baud)/sizeof(uint8_t), 1000);
     HAL_UART_DeInit(&huart1);
     huart1.Init.BaudRate = 115200;
     HAL_UART_Init(&huart1);
 //
 //    __DMA1_CLK_ENABLE();
 //

0 comments (0 inline, 0 general)