I am using Infineon Dave v4.2.2. to program the XMC1200 boot kit with colour LED card to read a DMX input signal using a rotary dial.
For those that don' know, Dave uses a simple UI with "apps" that will auto-generate code for you. I have successfully worked through Infineon's example for a 3-channel RGB LED with DMX control, found here:
main.c code from 3 RGB Lamps Example using PDM_DIMMED_LED_LAMP APPs
#include <DAVE.h> //Declarations from DAVE Code Generation (includes SFR declaration)
#define LINEAR_WALK_PRESCALER 0x2AC // prescaler value for walk time of 7s
#define DIM_DIV 0x64 // dimdiv value for dimming transition of 7s
#define DIM_PS 0xDB // dimclk_ps value
void OneSecTick(void);
/**
* @brief main() - Application entry point
*
* <b>Details of function</b><br>
* This routine is the application entry point. It is invoked by the device startup code. It is responsible for
* invoking the APP initialization dispatcher routine - DAVE_Init() and hosting the place-holder for user application
* code.
*/
int main(void)
{
DAVE_STATUS_t status;
uint32_t TimerId;
status = DAVE_Init(); /* Initialization of DAVE APPs */
if(status == DAVE_STATUS_FAILURE)
{
/* Placeholder for error handler code. The while loop below can be replaced with an user error handler. */
XMC_DEBUG("DAVE APPs initialization failed\n");
while(1U)
{
}
}
TimerId = SYSTIMER_CreateTimer(1000000, SYSTIMER_MODE_PERIODIC, (SYSTIMER_CALLBACK_t) OneSecTick, NULL);
SYSTIMER_StartTimer(TimerId);
/* Placeholder for user application code. The while loop below can be replaced with user application code. */
while(1U)
{
}
}
void OneSecTick(void)
{
static uint8_t step = 0;
if (++step==1) {
/* Change Slowly to Red */
RGB_LAMP_1_config.led_intensity[0] = 4095;
RGB_LAMP_1_config.led_intensity[1] = 0;
RGB_LAMP_1_config.led_intensity[2] = 0;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_1, LINEAR_WALK_PRESCALER);
/* Change Slowly to Green */
RGB_LAMP_2_config.led_intensity[0] = 0;
RGB_LAMP_2_config.led_intensity[1] = 4095;
RGB_LAMP_2_config.led_intensity[2] = 0;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_2, LINEAR_WALK_PRESCALER);
/* Change Slowly to Blue */
RGB_LAMP_3_config.led_intensity[0] = 0;
RGB_LAMP_3_config.led_intensity[1] = 0;
RGB_LAMP_3_config.led_intensity[2] = 4095;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_3, LINEAR_WALK_PRESCALER);
}
else if (step==9) {
/* Change Slowly to Green */
RGB_LAMP_1_config.led_intensity[0] = 0;
RGB_LAMP_1_config.led_intensity[1] = 4095;
RGB_LAMP_1_config.led_intensity[2] = 0;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_1, LINEAR_WALK_PRESCALER);
/* Change Slowly to Blue */
RGB_LAMP_2_config.led_intensity[0] = 0;
RGB_LAMP_2_config.led_intensity[1] = 0;
RGB_LAMP_2_config.led_intensity[2] = 4095;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_2, LINEAR_WALK_PRESCALER);
/* Change Slowly to White */
RGB_LAMP_3_config.led_intensity[0] = 1365;
RGB_LAMP_3_config.led_intensity[1] = 1365;
RGB_LAMP_3_config.led_intensity[2] = 1365;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_3, LINEAR_WALK_PRESCALER);
}
else if (step==17) {
/* Change Slowly to Blue */
RGB_LAMP_1_config.led_intensity[0] = 0;
RGB_LAMP_1_config.led_intensity[1] = 0;
RGB_LAMP_1_config.led_intensity[2] = 4095;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_1, LINEAR_WALK_PRESCALER);
/* Change Slowly to White */
RGB_LAMP_2_config.led_intensity[0] = 1365;
RGB_LAMP_2_config.led_intensity[1] = 1365;
RGB_LAMP_2_config.led_intensity[2] = 1365;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_2, LINEAR_WALK_PRESCALER);
/* Dim Down Slowly to 0% */
RGB_LAMP_3_config.dim_level = 0;
PDM_DIMMED_LED_LAMP_SetDimLevelExponentialAdv(&RGB_LAMP_3, DIM_DIV, DIM_PS);
}
else if (step==25) {
/* Change Slowly to White */
RGB_LAMP_1_config.led_intensity[0] = 1365;
RGB_LAMP_1_config.led_intensity[1] = 1365;
RGB_LAMP_1_config.led_intensity[2] = 1365;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_1, LINEAR_WALK_PRESCALER);
/* Dim Down Slowly to 0% */
RGB_LAMP_2_config.dim_level = 0;
PDM_DIMMED_LED_LAMP_SetDimLevelExponentialAdv(&RGB_LAMP_2, DIM_DIV, DIM_PS);
/* Dim Up Slowly to 25% */
RGB_LAMP_3_config.dim_level = 1024;
PDM_DIMMED_LED_LAMP_SetDimLevelExponentialAdv(&RGB_LAMP_3, DIM_DIV, DIM_PS);
}
else if (step==33) {
/* Dim Down Slowly to 0% */
RGB_LAMP_1_config.dim_level = 0;
PDM_DIMMED_LED_LAMP_SetDimLevelExponentialAdv(&RGB_LAMP_1, DIM_DIV, DIM_PS);
/* Dim Up Slowly to 25% */
RGB_LAMP_2_config.dim_level = 1024;
PDM_DIMMED_LED_LAMP_SetDimLevelExponentialAdv(&RGB_LAMP_2, DIM_DIV, DIM_PS);
/* Change Slowly to Red */
RGB_LAMP_3_config.led_intensity[0] = 4095;
RGB_LAMP_3_config.led_intensity[1] = 0;
RGB_LAMP_3_config.led_intensity[2] = 0;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_3, LINEAR_WALK_PRESCALER);
}
else if (step==40) {
/* Dim Up Slowly to 25% */
RGB_LAMP_1_config.dim_level = 1024;
PDM_DIMMED_LED_LAMP_SetDimLevelExponentialAdv(&RGB_LAMP_1, DIM_DIV, DIM_PS);
/* Change Slowly to Red */
RGB_LAMP_2_config.led_intensity[0] = 4095;
RGB_LAMP_2_config.led_intensity[1] = 0;
RGB_LAMP_2_config.led_intensity[2] = 0;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_2, LINEAR_WALK_PRESCALER);
/* Change Slowly to Green */
RGB_LAMP_3_config.led_intensity[0] = 0;
RGB_LAMP_3_config.led_intensity[1] = 4095;
RGB_LAMP_3_config.led_intensity[2] = 0;
PDM_DIMMED_LED_LAMP_SetColorAdv(&RGB_LAMP_3, LINEAR_WALK_PRESCALER);
}
else if (step==47) {
step = 0;
}
}
This works perfectly, but I am interested in implementing RGBW control, which will require a 4th channel.
Therefore, I assumed I would have to change the number of LEDs from 3 to 4 under the PDM_DIMMED_LAMP app, assign a pin to the new LED, update the number of relevant slots in the DMX512 app from 3 to 4, add a new line in the code to gather 8-bit data for the new LED (I am using the BLUE part on the 2nd RGB LED as a stand-in for white), and then run the code.
However, when I change the number of relevant slots from 3 to 4, all 4 channels light up but they stop responding to the dimmer.
Could this be a dimmer issue?
If anyone has any suggestions as to why this might be happening, it would be much appreciated.
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**
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*Neither the name of the copyright holders nor the names of its contributors **
may be used to endorse or promote products derived from this software without**
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**
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" **
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE **
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE **
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE **
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR **
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF **
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS **
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CONTRACT, STRICT LIABILITY,OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) **
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE **
POSSIBILITY OF SUCH DAMAGE. **
**
To improve the quality of the software, users are encouraged to share **
modifications, enhancements or bug fixes with Infineon Technologies AG **
dave@infineon.com). **
**
********************************************************************************
** **
** **
** PLATFORM : Infineon XMC1000 Series **
** **
** AUTHOR : Application Engineering Team **
** **
** **
** version 1 (first version) **
** version 2 (migration to DAVE v4) **
** MODIFICATION DATE : June, 17, 2016 **
** **
*******************************************************************************/
#include <DAVE.h> //Declarations from DAVE Code Generation (includes SFR declaration)
/**
* @brief main() - Application entry point
*
* <b>Details of function</b><br>
* This routine is the application entry point. It is invoked by the device startup code. It is responsible for
* invoking the APP initialization dispatcher routine - DAVE_Init() and hosting the place-holder for user application
* code.
*/
int main(void)
{
DAVE_STATUS_t status;
status = DAVE_Init(); /* Initialization of DAVE APPs */
if(status == DAVE_STATUS_FAILURE)
{
/* Placeholder for error handler code. The while loop below can be replaced with an user error handler. */
XMC_DEBUG("DAVE APPs initialization failed\n");
while(1U)
{
}
}
/* initialize global dimming level to 100% */
XMC_BCCU_SetGlobalDimmingLevel(BCCU0, 4095U);
/* Placeholder for user application code. The while loop below can be replaced with user application code. */
while(1U)
{
}
}
void DMX512_RD_UserCallBack(void)
{
RGB_LAMP.config->led_intensity[0] = DMX512_RD_0_rx_array[0] << 4U; // 8-bit information for Red color
RGB_LAMP.config->led_intensity[1] = DMX512_RD_0_rx_array[1] << 4U; // 8-bit information for Green color
RGB_LAMP.config->led_intensity[2] = DMX512_RD_0_rx_array[2] << 4U; // 8-bit information for Blue color
PDM_DIMMED_LED_LAMP_SetColor(&RGB_LAMP);
}
This is the code generated in the DMX512 infineon example, available from the website, for the 3-channel RGB LED w/DMX512 control (link no. 1 above).
This is a screenshot from the UI of the DMX512 app
Its probably worth noting I have a DMX dimmer, as well as the XMC1200 boot kit, which is essential for this project to work.
