Diff: 7segLed_HC595.h

Revision:

0:3373357a49f4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/7segLed_HC595.h	Mon Jan 22 10:23:24 2018 +0000
@@ -0,0 +1,127 @@
+/*
+ * Mbed Library / Akizuki 7-segment LED driver [OSL10564-74HC595-x]
+ *  http://akizukidenshi.com/catalog/g/gM-12643/
+ *
+ * Copyright (c) 2018 Kenji Arai / JH1PJL
+ *  http://www.page.sannet.ne.jp/kenjia/index.html
+ *  http://mbed.org/users/kenjiArai/
+ *      Created:    January    7th, 2018
+ *      Revised:    January   22nd, 2018
+ */
+
+#ifndef SEVENSEG_LED_DRVR_H
+#define SEVENSEG_LED_DRVR_H
+
+#include "mbed.h"
+
+#define BUFFER_SIZE     32
+
+//extern Serial pc;     // only for dubug
+
+/**
+ * @code
+ * #include "mbed.h"
+ * #include "7segLed_HC595.h"
+ *
+ * // case for Nucleo-F446RE, F411RE, F401RE
+ * //              SPI MOSI, SCLK,port/out,PWM, num of digits
+ * SevenSegLed led_7segs(D4, D3,  D5,      D2,  6);
+ *
+ *  int main() {
+ *      int32_t count = 123456U;
+ *      while(true) {
+ *          led_7segs = count++;
+ *          wait(0.1f);
+ *      }
+ *  }
+ * @endcode
+ */
+
+class SevenSegLed
+{
+public:
+    /** 7segments LED driver with 74HC595 (SER, SRCLK, RCLK, /OE)
+     *  @param sdo (->SER), sclk (->SRCLK), latch (->RCLK), bright (->/OE)
+     *  @param sdo must be SPI MOSI and sclk must be same SPI SCLK
+     *  @param latch is any output port
+     *  @param bright must be PwmOut port
+     *  @param num_of_digit -> # of 7seg LED's
+     */
+    SevenSegLed(PinName sdo, PinName sclk, PinName latch, PinName bright,
+                uint8_t num_of_digit);
+
+    /** Set data into 7seg LED's
+     *  @param  unsigned data (overflow may occur depend on number of LEDs)
+     *  @return none
+     */
+    void put_num(int32_t dt);
+
+    SevenSegLed& operator= (int value) {
+        put_num(value);
+        return *this;
+    }
+
+    /** Set ascii number into 7seg LED's
+     *  @param  ASCII data
+     *  @return none
+     */
+    void put_ascii(const char *data);
+
+    /** Set ascii character strings into 7seg LED's
+     *  @param  all ASCII character
+     *  @return none
+     */
+    void put_strings(const char *data);
+
+    /** Set raw data into 7seg LED's
+     *  @param  Raw data (Segment element)
+     *  @return none
+     */
+    void put_raw(uint8_t *data);
+
+    /** Set dot into 7seg LED's
+     *  @param  position (1= LSB, 2=2nd, 4=3rd, 8=4th, 16, 32, 64 ----)
+     *  @return none
+     */
+    void put_dot(uint16_t position);
+    void clear_all_dot(void);
+
+    /** Set Brightness
+     *  @param  britness max(1.0f) and min = all LED off(0.0f)
+     *  @return none
+     */
+    void brightness(float bright);
+
+    /** Set Zero Suppress (defalt OFF)
+     *  @param  mode=true -> zero suppress ON, mode = false -> OFF
+     *  @return none
+     */
+    void zero_suppress(bool mode);
+
+    /** Set clock frequency
+     *  @param  clock frequency (default 1000000Hz(1MHz))
+     *  @return none
+     */
+    void frequency(int32_t freq);
+
+protected:
+    SPI         spi_;
+    DigitalOut  latch_;
+    PwmOut      pwm_;
+
+    uint8_t     buf[BUFFER_SIZE];
+    uint8_t     seg[BUFFER_SIZE];
+    uint8_t     num;
+    uint16_t    dot_inf;
+    uint32_t    wrk;
+    bool        zerosuppress;
+    bool        num_mode;
+    float       bright_data;
+
+    void seven_seg_n_digt(void);
+    void set_dot(void);
+    void spi_out(void);
+
+};
+
+#endif // SEVENSEG_LED_DRVR_H