contrib/firmware: add 'send not acknowledged' function to the i2c bit-banging impleme...

Change-Id: I60597ebc126da4acb00654513b96f52261253e12
Signed-off-by: Ahmed BOUDJELIDA <aboudjelida@nanoxplore.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/7811
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>

diff --git a/contrib/firmware/angie/c/include/i2c.h b/contrib/firmware/angie/c/include/i2c.h
index 06185efb4dd3fe1afcbe21007f52fb1243f7d291..d0404923b33bd8c26a439994ac601e4692b74690 100644 (file)
--- a/contrib/firmware/angie/c/include/i2c.h
+++ b/contrib/firmware/angie/c/include/i2c.h
@@ -19,6 +19,7 @@ void repeated_start(void);
 void stop_cd(void);
 void clock_cd(void);
 void send_ack(void);
+void send_nack(void);
 bool get_ack(void);
 
 uint8_t get_address(uint8_t adr, uint8_t rdwr);

diff --git a/contrib/firmware/angie/c/src/i2c.c b/contrib/firmware/angie/c/src/i2c.c
index a7004bfac90a5ba980f7f634b4de69d3fdfb8b71..53840100b93a50cca1443258932efcc4b390809a 100644 (file)
--- a/contrib/firmware/angie/c/src/i2c.c
+++ b/contrib/firmware/angie/c/src/i2c.c
@@ -60,6 +60,16 @@ void send_ack(void)
        delay_us(1);
 }
 
+void send_nack(void)
+{
+       PIN_SDA = 1;
+       delay_us(1);
+       PIN_SCL = 1;
+       delay_us(1);
+       PIN_SCL = 0;
+       delay_us(1);
+}
+
 bool get_ack(void)
 {
        PIN_SDA_DIR = 1;

diff --git a/contrib/firmware/angie/c/src/usb.c b/contrib/firmware/angie/c/src/usb.c
index 0a43ff9f656286d3d03f9537d4822e6d8cfe35c3..1b7aa476583a53f8f966f5564bd00649190b1185 100644 (file)
--- a/contrib/firmware/angie/c/src/usb.c
+++ b/contrib/firmware/angie/c/src/usb.c
@@ -798,6 +798,9 @@ void i2c_recieve(void)
 
                EP8FIFOBUF[count - 1] = receive_byte();
 
+               /*  send Nack:  */
+               send_nack();
+
                /*   stop   */
                stop_cd();