some timing test for idm communication (not working yet - hardware probs?)

git-svn-id: https://svn.spreadspace.org/mur.sat@501 7de4ea59-55d0-425e-a1af-a3118ea81d4c

1 files changed, 6 insertions, 2 deletions

diff --git a/software/idm-test/idm-test.c b/software/idm-test/idm-test.c
index 0de977f..c72ab91 100644
--- a/software/idm-test/idm-test.c
+++ b/software/idm-test/idm-test.c
@@ -43,7 +43,7 @@
 

     /* Global I/O Buffers: */

 static RingBuffer_t SPItoUSB_Buffer;

-static uint8_t      SPItoUSB_Buffer_Data[128];

+static uint8_t      SPItoUSB_Buffer_Data[8];

 

 /** LUFA CDC Class driver interface configuration and state information. This structure is

  *  passed to all CDC Class driver functions, so that multiple instances of the same class

@@ -104,7 +104,7 @@ void SetupHardware(void)
 

   TCCR0B = (1 << CS02);

 

-  SPI_Init(SPI_SPEED_FCPU_DIV_4  | SPI_MODE_MASTER | SPI_ORDER_MSB_FIRST | 

+  SPI_Init(SPI_SPEED_FCPU_DIV_16  | SPI_MODE_MASTER | SPI_ORDER_MSB_FIRST | 

            SPI_SCK_LEAD_RISING | SPI_SAMPLE_LEADING);

   SPI_CS_DDR |= (1<<CS);

   SPI_CS_PORT |= (1<<CS);

@@ -129,17 +129,21 @@ void IDM_ReadData(void)
 {

   led_on();

   SPI_CS_PORT &= ~(1<<CS);

+  _delay_us(100);

 

   SPI_SendByte('r');

+  _delay_us(50);

   uint8_t int_state = (INT_PIN & (1<<INT));

   while(!int_state) {

     uint8_t ReceivedByte = SPI_ReceiveByte();

     RingBuffer_Insert(&SPItoUSB_Buffer, ReceivedByte);

     if(RingBuffer_IsFull(&SPItoUSB_Buffer))

       break;

+    _delay_us(30);

     int_state = (INT_PIN & (1<<INT));

   }

 

+  _delay_us(100);

   SPI_CS_PORT |= (1<<CS);

   led_off();

 }