David Anasco
forked for MAX6951. The 3V-variant of MAX7219
Diff: max7219.cpp
- Revision:
- 5:e1415fc2841c
- Parent:
- 2:9150a0dc77a3
--- a/max7219.cpp Thu May 12 20:06:28 2016 +0000
+++ b/max7219.cpp Mon Jul 26 09:48:25 2021 +0000
@@ -39,7 +39,7 @@
Max7219::Max7219(SPI *spi_bus, PinName cs): _p_spi(spi_bus)
{
_num_devices = 1;
-
+
_p_cs = new DigitalOut(cs, 1);
_spi_owner = false;
}
@@ -49,10 +49,10 @@
Max7219::Max7219(PinName mosi, PinName miso, PinName sclk, PinName cs)
{
_num_devices = 1;
-
+
_p_spi = new SPI(mosi, miso, sclk);
_p_cs = new DigitalOut(cs, 1);
-
+
_spi_owner = true;
}
@@ -61,8 +61,8 @@
Max7219::~Max7219()
{
delete _p_cs;
-
- if(_spi_owner)
+
+ if(_spi_owner)
{
delete _p_spi;
}
@@ -73,13 +73,13 @@
int32_t Max7219::set_num_devices(uint8_t num_devices)
{
int32_t rtn_val = -1;
-
+
if(num_devices > 0)
{
_num_devices = num_devices;
rtn_val = _num_devices;
}
-
+
return(rtn_val);
}
@@ -88,14 +88,14 @@
void Max7219::set_display_test(void)
{
uint8_t idx = 0;
-
- _p_cs->write(0);
+
+ _p_cs->write(0);
for(idx = 0; idx < _num_devices; idx++)
{
_p_spi->write(MAX7219_DISPLAY_TEST);
_p_spi->write(1);
}
- _p_cs->write(1);
+ _p_cs->write(1);
}
@@ -103,14 +103,14 @@
void Max7219::clear_display_test(void)
{
uint8_t idx = 0;
-
- _p_cs->write(0);
+
+ _p_cs->write(0);
for(idx = 0; idx < _num_devices; idx++)
{
_p_spi->write(MAX7219_DISPLAY_TEST);
_p_spi->write(0);
}
- _p_cs->write(1);
+ _p_cs->write(1);
}
@@ -119,7 +119,7 @@
{
int32_t rtn_val = -1;
uint8_t idx = 0;
-
+
if(config.device_number > _num_devices)
{
rtn_val = -1;
@@ -132,7 +132,7 @@
else
{
//write DECODE_MODE register of device
- _p_cs->write(0);
+ _p_cs->write(0);
for(idx = _num_devices; idx > 0; idx--)
{
if(config.device_number == idx)
@@ -146,12 +146,12 @@
_p_spi->write(0);
}
}
- _p_cs->write(1);
-
+ _p_cs->write(1);
+
wait_us(1);
-
+
//write INTENSITY register of device
- _p_cs->write(0);
+ _p_cs->write(0);
for(idx = _num_devices; idx > 0; idx--)
{
if(config.device_number == idx)
@@ -165,12 +165,12 @@
_p_spi->write(0);
}
}
- _p_cs->write(1);
-
+ _p_cs->write(1);
+
wait_us(1);
-
+
//write SCAN_LIMT register of device
- _p_cs->write(0);
+ _p_cs->write(0);
for(idx = _num_devices; idx > 0; idx--)
{
if(config.device_number == idx)
@@ -184,13 +184,13 @@
_p_spi->write(0);
}
}
- _p_cs->write(1);
-
+ _p_cs->write(1);
+
wait_us(1);
-
+
rtn_val = 0;
}
-
+
return(rtn_val);
}
@@ -199,38 +199,38 @@
void Max7219::init_display(max7219_configuration_t config)
{
uint8_t idx = 0;
-
+
//write DECODE_MODE register of all devices
- _p_cs->write(0);
+ _p_cs->write(0);
for(idx = 0; idx < _num_devices; idx++)
{
_p_spi->write(MAX7219_DECODE_MODE);
_p_spi->write(config.decode_mode);
}
- _p_cs->write(1);
-
+ _p_cs->write(1);
+
wait_us(1);
-
+
//write INTENSITY register of all devices
- _p_cs->write(0);
+ _p_cs->write(0);
for(idx = 0; idx < _num_devices; idx++)
{
_p_spi->write(MAX7219_INTENSITY);
_p_spi->write(config.intensity);
}
- _p_cs->write(1);
-
+ _p_cs->write(1);
+
wait_us(1);
-
+
//write SCAN_LIMT register of all devices
- _p_cs->write(0);
+ _p_cs->write(0);
for(idx = 0; idx < _num_devices; idx++)
{
_p_spi->write(MAX7219_SCAN_LIMIT);
_p_spi->write(config.scan_limit);
}
- _p_cs->write(1);
-
+ _p_cs->write(1);
+
wait_us(1);
}
@@ -240,7 +240,7 @@
{
int32_t rtn_val = -1;
uint8_t idx = 0;
-
+
if(device_number > _num_devices)
{
rtn_val = -1;
@@ -252,12 +252,12 @@
}
else
{
- _p_cs->write(0);
+ _p_cs->write(0);
for(idx = _num_devices; idx > 0; idx--)
{
if(device_number == idx)
{
- _p_spi->write(MAX7219_SHUTDOWN);
+ _p_spi->write(MAX7219_CONFIGURATION);
_p_spi->write(1);
}
else
@@ -266,11 +266,11 @@
_p_spi->write(0);
}
}
- _p_cs->write(1);
-
+ _p_cs->write(1);
+
rtn_val = 0;
}
-
+
return(rtn_val);
}
@@ -279,23 +279,23 @@
void Max7219::enable_display(void)
{
uint8_t idx = 0;
-
- _p_cs->write(0);
+
+ _p_cs->write(0);
for(idx = 0; idx < _num_devices; idx++)
{
- _p_spi->write(MAX7219_SHUTDOWN);
+ _p_spi->write(MAX7219_CONFIGURATION);
_p_spi->write(1);
}
- _p_cs->write(1);
+ _p_cs->write(1);
}
-
+
-//*********************************************************************
+//*********************************************************************
int32_t Max7219::disable_device(uint8_t device_number)
{
int32_t rtn_val = -1;
uint8_t idx = 0;
-
+
if(device_number > _num_devices)
{
rtn_val = -1;
@@ -307,12 +307,12 @@
}
else
{
- _p_cs->write(0);
+ _p_cs->write(0);
for(idx = _num_devices; idx > 0; idx--)
{
if(device_number == idx)
{
- _p_spi->write(MAX7219_SHUTDOWN);
+ _p_spi->write(MAX7219_CONFIGURATION);
_p_spi->write(0);
}
else
@@ -321,42 +321,42 @@
_p_spi->write(0);
}
}
- _p_cs->write(1);
-
+ _p_cs->write(1);
+
rtn_val = 0;
}
-
+
return(rtn_val);
}
-//*********************************************************************
+//*********************************************************************
void Max7219::disable_display(void)
{
uint8_t idx = 0;
-
- _p_cs->write(0);
+
+ _p_cs->write(0);
for(idx = 0; idx < _num_devices; idx++)
{
- _p_spi->write(MAX7219_SHUTDOWN);
+ _p_spi->write(MAX7219_CONFIGURATION);
_p_spi->write(0);
}
- _p_cs->write(1);
+ _p_cs->write(1);
}
-//*********************************************************************
+//*********************************************************************
int32_t Max7219::write_digit(uint8_t device_number, uint8_t digit, uint8_t data)
{
int32_t rtn_val = -1;
uint8_t idx = 0;
-
- if(digit > MAX7219_DIGIT_7)
+
+ if(digit > MAX7219_D7_P0)
{
rtn_val = -3;
}
- else if(digit < MAX7219_DIGIT_0)
+ else if(digit < MAX7219_D0_P0)
{
rtn_val = -4;
}
@@ -372,7 +372,7 @@
}
else
{
- _p_cs->write(0);
+ _p_cs->write(0);
for(idx = _num_devices; idx > 0; idx--)
{
if(idx == device_number)
@@ -386,27 +386,27 @@
_p_spi->write(0);
}
}
- _p_cs->write(1);
-
+ _p_cs->write(1);
+
rtn_val = 0;
}
}
-
+
return(rtn_val);
}
-
+
-//*********************************************************************
+//*********************************************************************
int32_t Max7219::clear_digit(uint8_t device_number, uint8_t digit)
{
int32_t rtn_val = -1;
uint8_t idx = 0;
-
- if(digit > MAX7219_DIGIT_7)
+
+ if(digit > MAX7219_D7_P0)
{
rtn_val = -3;
}
- else if(digit < MAX7219_DIGIT_0)
+ else if(digit < MAX7219_D0_P0)
{
rtn_val = -4;
}
@@ -422,7 +422,7 @@
}
else
{
- _p_cs->write(0);
+ _p_cs->write(0);
for(idx = _num_devices; idx > 0; idx--)
{
if(idx == device_number)
@@ -436,22 +436,22 @@
_p_spi->write(0);
}
}
- _p_cs->write(1);
-
+ _p_cs->write(1);
+
rtn_val = 0;
}
}
-
+
return(rtn_val);
}
-//*********************************************************************
+//*********************************************************************
int32_t Max7219::device_all_on(uint8_t device_number)
{
int32_t rtn_val = -1;
uint8_t idx = 0;
-
+
if(device_number > _num_devices)
{
rtn_val = -1;
@@ -463,7 +463,7 @@
else
{
rtn_val = 0;
-
+
//writes every digit of given device to 0xFF
for(idx = 0; idx < 8; idx++)
{
@@ -473,17 +473,17 @@
}
}
}
-
+
return(rtn_val);
}
-//*********************************************************************
+//*********************************************************************
int32_t Max7219::device_all_off(uint8_t device_number)
{
int32_t rtn_val = -1;
uint8_t idx = 0;
-
+
if(device_number > _num_devices)
{
rtn_val = -1;
@@ -495,7 +495,7 @@
else
{
rtn_val = 0;
-
+
//writes every digit of given device to 0
for(idx = 0; idx < 8; idx++)
{
@@ -505,7 +505,7 @@
}
}
}
-
+
return(rtn_val);
}
@@ -513,29 +513,28 @@
void Max7219::display_all_on(void)
{
uint8_t idx, idy;
-
+
//writes every digit of every device to 0xFF
for(idx = 0; idx < _num_devices; idx++)
{
- for(idy = 0; idy < MAX7219_DIGIT_7; idy++)
+ for(idy = 0; idy < MAX7219_D7_P0; idy++)
{
write_digit((idx + 1), (idy + 1), 0xFF);
}
}
}
-
-
+
+
void Max7219::display_all_off(void)
{
uint8_t idx, idy;
-
+
//writes every digit of every device to 0
for(idx = 0; idx < _num_devices; idx++)
{
- for(idy = 0; idy < MAX7219_DIGIT_7; idy++)
+ for(idy = 0; idy < MAX7219_D7_P0; idy++)
{
write_digit((idx + 1), (idy + 1), 0);
}
}
}
-