Current measurment bits transferring via SPI from FPGA to RPi extended from 12 to...

[fpga/rpi-motor-control.git] / pmsm-control / test_sw / rp_spi.c

diff --git a/pmsm-control/test_sw/rp_spi.c b/pmsm-control/test_sw/rp_spi.c
index 57a212265ec8713fe12ebecbafb3719ee98d7760..98d4eca27c3ab4fce7e1d010dbe625b712063172 100644 (file)
--- a/pmsm-control/test_sw/rp_spi.c
+++ b/pmsm-control/test_sw/rp_spi.c
@@ -97,7 +97,7 @@ struct rpi_in spi_read(uint8_t * tx)
        /*/
 
        /*prichozi data:
-        * rx[0] - bity 127 downto 120
+        * rx[0] - bity 127 downto 120 the first income bit..127
         * rx[1] - bity 119 downto 112
         * rx[2] - bity 111 downto 104
         * rx[3] - bity 103 downto 96
@@ -112,7 +112,7 @@ struct rpi_in spi_read(uint8_t * tx)
         * rx[12] - bity 31 downto 24
         * rx[13] - bity 23 downto 16
         * rx[14] - bity 15 downto 8
-        * rx[15] - bity 7 downto 0
+        * rx[15] - bity 7 downto 0     the last income bit..0
         */
 
        /*uprava endianity pozice*/
@@ -174,19 +174,38 @@ struct rpi_in spi_read(uint8_t * tx)
        in.b37=!!(0x20 & rx[7]);
        in.b36=!!(0x10 & rx[7]);
 
+       /** currents
+        * ch0 - bits 71 downto 48
+        *      71..64 in rx[7] - all byte
+        *      63..56 in rx[8] - all byte
+        *      55..48 in rx[9] - all byte
+        * ch1 - bits 47 downto 24
+        *      47..40 in rx[10] - all byte
+        *      39..32 in rx[11] - all byte
+        *      31..24 in rx[12] - all byte
+        * ch2 - bits 23 downto 0
+        *      23..16 in rx[13] - all byte
+        *      15..8 in rx[14] - all byte
+        *      7..0 in rx[15] - all byte
+        */
 
-       in.ch0=0x0F & rx[7];
+       in.ch0=rx[7];
        in.ch0<<=8;
        in.ch0|=rx[8];
+       in.ch0<<=8;
+       in.ch0|=rx[9];
 
-       in.ch1= rx[9];
+       in.ch1=rx[10];
        in.ch1<<=8;
-       in.ch1|=(rx[10] & 0xF0);
-       in.ch1>>=4;
+       in.ch1|=rx[11];
+       in.ch1<<=8;
+       in.ch1|=rx[12];
 
-       in.ch2=(0xF & rx[10]);
+       in.ch2=rx[13];
+       in.ch2<<=8;
+       in.ch2|=rx[14];
        in.ch2<<=8;
-       in.ch2|=rx[11];
+       in.ch2|=rx[15];
 
 
        return in;