From 0dbe2001333b8f6a01e3082ce16e7326db801991 Mon Sep 17 00:00:00 2001
From: Daniel Friesel <daniel.friesel@uos.de>
Date: Fri, 21 Jun 2019 11:09:42 +0200
Subject: add basic nRF24 driver

---
 include/driver/nrf24l01.h | 69 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 include/driver/nrf24l01.h

(limited to 'include/driver/nrf24l01.h')

diff --git a/include/driver/nrf24l01.h b/include/driver/nrf24l01.h
new file mode 100644
index 0000000..911ef58
--- /dev/null
+++ b/include/driver/nrf24l01.h
@@ -0,0 +1,69 @@
+#ifndef NRF24L01_H
+#define NRF24L01_H
+
+#include <stdint.h>
+#include "driver/gpio.h"
+#include "arch.h"
+
+class Nrf24l01 {
+	private:
+		Nrf24l01(const Nrf24l01 &copy);
+		unsigned char txbuf[2];
+		unsigned char rxbuf[2];
+
+		uint8_t writeRegister(uint8_t reg, uint8_t value);
+		uint8_t readRegister(uint8_t reg);
+
+		inline void csnHigh() {
+			gpio.write(NRF24L01_CS_PIN, 1);
+			arch.delay_us(5);
+		}
+		inline void csnLow() {
+			gpio.write(NRF24L01_CS_PIN, 0);
+			arch.delay_us(5);
+		}
+		inline void beginTransaction() {
+			csnLow();
+		}
+		inline void endTransaction() {
+			csnHigh();
+		}
+
+	public:
+		Nrf24l01() {}
+
+		/**
+		 * Power Amplifier level.
+		 *
+		 * For use with setPALevel()
+		 */
+		enum rf24_pa_dbm_e { RF24_PA_MIN = 0,RF24_PA_LOW, RF24_PA_HIGH, RF24_PA_MAX, RF24_PA_ERROR };
+
+		/**
+		 * Data rate.  How fast data moves through the air.
+		 *
+		 * For use with setDataRate()
+		 */
+		enum rf24_datarate_e { RF24_1MBPS = 0, RF24_2MBPS, RF24_250KBPS };
+
+		/**
+		 * CRC Length.  How big (if any) of a CRC is included.
+		 *
+		 * For use with setCRCLength()
+		 */
+		enum rf24_crclength_e { RF24_CRC_DISABLED = 0, RF24_CRC_8, RF24_CRC_16 };
+
+
+		void setup();
+		void powerOn();
+		void powerOff();
+
+		void setRetries(uint8_t delay, uint8_t count);
+		void setPALevel ( uint8_t level ); // 0 (-18B), 1 (-12dB), 2 (-6dB), 3 (0dB)
+
+		uint8_t getStatus();
+};
+
+extern Nrf24l01 nrf24l01;
+
+#endif
-- 
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