working on driver for the max7219 to test the spi interface. Problem remains with the integration of the device drivers inside the cmake project

ked/csl/interfaces/spi.h

@@ -211,7 +211,7 @@ uint32_t spiReadWrite32bit(
 		spi_ch_t *spi_ch,
 		uint8_t bits);
 
-//implementation
+// implementation
 
 /**
  * @brief SPI hardware peripheral reset

ked/csl/stm32f042/Src/imp_spi.c

@@ -138,6 +138,8 @@ uint8_t spiTrx8BitPolling(spiCH_t spi_hw_ch, uint8_t tx_data)
 	// Wait for RXNE to set -> This will indicate that the Rx buffer is not empty
 	while (!(SPI_BASE->SR &SPI_SR_RXNE));  
 	
+
+	// TODO: test read!	
 	return *(uint8_t*)&(SPI_BASE->DR);
 }
 

ked/device_drivers/max7219/max7219.c

@@ -0,0 +1,22 @@
+#include "max7219.h"
+
+void max7219_init(
+		max7219_t *display,
+		spi_ch_t *spi_ch)
+{
+	display->spiCH = spi_ch;
+}
+
+void max7219_testDisplay(
+		max7219_t *display,
+		uint8_t logic)
+{
+	if(logic) {
+		spiWriteReg(display->spiCH, 0x0F, 0x01);
+	} else {
+		spiWriteReg(display->spiCH, 0x0F, 0x00);
+	}
+}
+
+
+

ked/device_drivers/max7219/max7219.h

@@ -0,0 +1,65 @@
+/**
+  **************************************************************************************************
+  * @file		max7219.h
+  * @author		Kerem Yollu & Edwin Koch
+  * @date		25.08.2022
+  * @version	1.0
+  ************************************************************************************************** 
+  * @brief	
+  *				
+  * **Detailed Description :**
+  *
+  * @todo 
+  **************************************************************************************************
+*/
+
+#ifndef _MAX7219_H_
+#define _MAX7219_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+#include "spi.h"
+
+typedef struct{
+	spi_ch_t *spiCH;
+}max7219_t;
+#if 0
+/*
+ * @brief TODO:
+ */
+void max7219_init(
+		max7219_t *display,
+		spi_ch_t *spi_ch);
+
+
+/**
+ * @brief Test Display
+ * Test  Display by setting logic > 0 and stop testing by setting logic = 0
+ * In test mode all the LEDs should light up. Stopping testmode will resume back to previous
+ * setting.
+ * @param  *display pointer to max7219 display object
+ * @param logic logic state for logic high enter value > 0 and for low enter value = 0
+ */
+void max7219_testDisplay(
+		max7219_t *display,
+		uint8_t logic);
+
+/**
+ * @brief Shutdown Display
+ * Shut down the display by setting the logic value > 0. To activate the display again set
+ * logic = 0.
+ * @param
+ */ 
+void max7219_shutdownDisplay(
+		max7219_t *display,
+		uint8_t logic);
+#endif
+
+#ifdef _cplusplus
+}
+#endif
+
+#endif // _MAX7219_H_

main.c

@@ -6,6 +6,34 @@
 #include "timer.h"
 #include "spi.h"
 
+//#include "ked/device_drivers/max7219/max7219.h "
+
+typedef struct{
+	spi_ch_t *spiCH;
+}max7219_t;
+
+void max7219_init(
+		max7219_t *display,
+		spi_ch_t *spi_ch)
+{
+	display->spiCH = spi_ch;
+}
+
+void max7219_testDisplay(
+		max7219_t *display,
+		uint8_t logic)
+{
+	spiWriteReg(display->spiCH,0x0F, (logic) ? 0x01 : 0x00);
+}
+
+
+void dispTest(max7219_t *disp)
+{
+	max7219_testDisplay(disp, 1);
+	delayMs(500);
+	max7219_testDisplay(disp, 0);
+	delayMs(500);
+}
 
 void max7219_test_display(spi_ch_t* spi_ch)
 {
@@ -19,6 +47,8 @@ void max7219_test_display(spi_ch_t* spi_ch)
 */
 	spiWriteReg(spi_ch,0x0F,0x01);
 
+	//max7219_testDisplay(spi_ch, 1);
+
 //	spiWrite16bit(spi_ch, 0x0F01);
 	//delayMs(50);
 //	spiWrite16bit(spi_ch, 0x0F01);
@@ -32,6 +62,7 @@ void max7219_test_display(spi_ch_t* spi_ch)
 	
 	// set mode to shutdown
 	spiWrite16bit(spi_ch, 0x0F00);
+	//max7219_testDisplay(spi_ch, 0);
 	delayMs(200);
 /*
 	pinWrite(spi_ch->pin, 0);
@@ -40,7 +71,7 @@ void max7219_test_display(spi_ch_t* spi_ch)
 	pinWrite(spi_ch->pin,1);
 	
 	
-	// set mode to shutdown
+// set mode to shutdown
 //	spiWrite16bit(spi_ch, 0x0C00);
 	delayMs(1000);*/
 }
@@ -56,6 +87,7 @@ int main(int argc, char *argv[])
 	uint8_t i = 0;
 	
 	spi_ch_t spi_test_channel;
+	max7219_t ledMatrix;
 
 	// making array with all available timers	
 	delayInitMs(8000000, 1000); // Clock Freq and Divider for ARM library 
@@ -113,6 +145,10 @@ int main(int argc, char *argv[])
 	
 	spiSetupCH(&spi_test_channel, SPI_CH_1, pinA3);
 
+	// LED Matrix object setup
+	//ledMatrix.spiCH = &spi_test_channel;
+	max7219_init(&ledMatrix, &spi_test_channel);
+
 	spiEnable(SPI_CH_1);
 /*
  *	MAX7219 hoockup for this example
@@ -134,7 +170,8 @@ int main(int argc, char *argv[])
 
 	while(1){
 		pinToggle(pinB3);
-		max7219_test_display(&spi_test_channel);
+		dispTest(&ledMatrix);
+		//max7219_test_display(&spi_test_channel);
 	}
 
 	for(i = 0 ; i < 100 ; i++) {