Diff: bms.cpp

Revision:

0:f06ed53310a3

Child:

1:4dd3e328a30b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/bms.cpp	Wed Feb 07 08:26:04 2018 +0000
@@ -0,0 +1,65 @@
+#include "mbed.h"
+#include "bms.h"
+
+SPI spi(D11, D12, D13);
+DigitalOut cs(D10);
+
+void delay_u(uint16_t micro)
+{
+    wait_us(micro);
+}
+
+void delay_m(uint16_t milli)
+{
+    wait_ms(milli);
+}
+
+void spi_enable(void) // Configures SCK frequency. Use constant defined in header file.
+{
+    cs = 1;                     //high as init for disable SPI
+    spi.format(8, 3);               //byte width, spi mode
+    spi.frequency(1000000);         //1MHz
+}
+    
+
+/*
+Writes an array of bytes out of the SPI port
+*/
+void spi_write_array(uint8_t len, // Option: Number of bytes to be written on the SPI port
+                     uint8_t data[] //Array of bytes to be written on the SPI port
+                    )
+{
+    for (uint8_t i = 0; i < len; i++) {
+        spi.write((int8_t)data[i]);
+    }
+}
+
+/*
+ Writes and read a set number of bytes using the SPI port.
+
+*/
+
+void spi_write_read(uint8_t tx_Data[],//array of data to be written on SPI port
+                    uint8_t tx_len, //length of the tx data arry
+                    uint8_t *rx_data,//Input: array that will store the data read by the SPI port
+                    uint8_t rx_len //Option: number of bytes to be read from the SPI port
+                   )
+{
+    for (uint8_t i = 0; i < tx_len; i++) {
+        spi.write(tx_Data[i]);
+    }
+
+    for (uint8_t i = 0; i < rx_len; i++) {
+
+        rx_data[i] = (uint8_t)spi.write(0xFF);
+    }
+
+}
+
+
+uint8_t spi_read_byte(uint8_t tx_dat)
+{
+    uint8_t data;
+    data = (uint8_t)spi.write(0xFF);
+    return(data);
+}