want to add command mode and data mode in DSPS sdk.

Question

Hi Team, 
 
 Iam using DSPS sdk: 6.150.6.77, DA14531MOD. 
 As per my requirement i have to use DSPS sdk for high data flow. 
 So, further i want to add other feature like, 
 1. when BT module not connected to host Application it should be set to command mode. 
 2. when BT module connected to host Application it should be in data mode. 
 please let me know at which piece of code App connection and disconnection flags are placed. 
 
 Regards, 
 Laxmi Narayana.

JH_Renesas · Answer

Hi Laxmi, 
 Thank you for posting your questions online. 
 This is an good idea, but It is not possible to have both codeless and sps together because the RAM resource are not enough. 
 You can choose DA1469x and DA1459x for development. 
 DA14592 - SmartBond Multi-Core Bluetooth&reg; LE 5.2 SoC with Embedded Flash | Renesas 
 DA14695 - Multi-Core Bluetooth&reg; 5.2 SoC with System Power Management Unit | Renesas 
 BR, 
 JH_Renesas

JH_Renesas · Answer

Hi Laxmi, 
 The SPS SDK structure just like SDK6 general, you can find the event call backs here: 
 
 BR, 
 JH_Renesas

JH_Renesas · Answer

Hi Laxmi， 
 OV has created one demo for responding BD address, you can take this as a reference: 
 I worked on the SPS SDK v6.150.6.77 with Security enabled. At the top of the user_sps_device_dma.c file I added the following functions: 
 
 #include "user_periph_setup.h"
#include "uart.h"
uint8_t addr2[BD_ADDR_LEN] = {0}; 
static void enable_uart1()
{
 //Configure UART pins for 2-Wire UART
 GPIO_ConfigurePin(gpio_uart1_tx.port, gpio_uart1_tx.pin, OUTPUT, PID_UART1_TX, false);
 GPIO_ConfigurePin(gpio_uart1_rx.port, gpio_uart1_rx.pin, INPUT_PULLUP, PID_UART1_RX, false);
 GPIO_ConfigurePin(gpio_uart1_rts.port, gpio_uart1_rts.pin, INPUT_PULLUP, PID_GPIO, false);
 GPIO_ConfigurePin(gpio_uart1_cts.port, gpio_uart1_cts.pin, INPUT_PULLUP, PID_GPIO, false);
 //Uart Configuration
 uart_cfg_t uart_cfg = {
 .baud_rate = UART_BAUDRATE_921600,
 .data_bits = UART_DATABITS_8,
 .parity = UART_PARITY_NONE,
 .stop_bits = UART_STOPBITS_1,
 .auto_flow_control = UART_AFCE_DIS,
 .use_fifo = UART_FIFO_EN,
 .tx_fifo_tr_lvl = UART_TX_FIFO_LEVEL_0,
 .rx_fifo_tr_lvl = UART_RX_FIFO_LEVEL_0,
 .intr_priority = 0,
 };
 //Iniitialize UART1
 uart_initialize(UART1, &uart_cfg);
 
}
static void disable_uart1()
{
 uart_disable(UART1);
 
 //Reconfigure UART pins for 4-Wire UART 
 GPIO_ConfigurePin(gpio_uart1_tx.port, gpio_uart1_tx.pin, OUTPUT, PID_UART1_TX, false);
 GPIO_ConfigurePin(gpio_uart1_rx.port, gpio_uart1_rx.pin, INPUT_PULLUP, PID_UART1_RX, false);
 GPIO_ConfigurePin(gpio_uart1_rts.port, gpio_uart1_rts.pin, OUTPUT, PID_GPIO, true);
 GPIO_ConfigurePin(gpio_uart1_cts.port, gpio_uart1_cts.pin, INPUT_PULLUP, PID_UART1_CTSN, false); 
}
static void print_me(void)
{
 arch_set_sleep_mode(ARCH_SLEEP_OFF);
 //Initialize UART1
 enable_uart1();
#if USER_CFG_ADDRESS_MODE == APP_CFG_ADDR_STATIC
 // Send the BDA
 uart_send(UART1, addr2, (sizeof(addr2)+ 2), UART_OP_BLOCKING);
#else
 uint32_t bdaddr_msb = (GetWord32(BLE_BDADDRU_REG))&0x1FFFF;
 uint32_t bdaddr_lsb = (GetWord32(BLE_BDADDRL_REG));
 uint8_t addr[6];
 memcpy(&addr2, &bdaddr_lsb, 4);
 memcpy(&addr2[4], &bdaddr_msb, 2);
 uart_send(UART1, addr2, (sizeof(addr2)+ 2), UART_OP_BLOCKING);
#endif

//Disable UART1 and reconfigure the UART pins for 4-Wire UART
 disable_uart1();
 
 arch_set_sleep_mode(app_default_sleep_mode);

} 
 
 You should also modify the default_app_generate_static_random_addr API on app_default_handlers.c file as shown below: 
 
 extern uint8_t addr2[BD_ADDR_LEN];
void default_app_generate_static_random_addr(struct bd_addr *addr)
{
 // Check if the static random address is already generated.
 // If it is already generated the two MSB are equal to '1'
 if (!(addr->addr[BD_ADDR_LEN - 1] & GAP_STATIC_ADDR))
 {
 // Generate static random address, 48-bits
 co_write32p(&addr->addr[0], co_rand_word());
 co_write16p(&addr->addr[4], co_rand_hword());
 
 // The two MSB shall be equal to '1'
 addr->addr[BD_ADDR_LEN - 1] |= GAP_STATIC_ADDR;
 }
 memcpy(&addr2, &addr->addr, BD_ADDR_LEN);
 
} 
 
 In order for the project to be able to compile, you will have to change the value of the MSG_HEAP_SZ on the da14531_config_advanced.h file: #define MSG_HEAP_SZ (4020) 
 Finally, you can call the print_me function whenever you want inside the user_sps_device_dma.c file. I called it inside the user_advertise_operation(void). Each time we start advertising, we will initialize briefly UART1 and send the BDA to the Host MCU. The Host MCU should handle the BDA and save it on his side. Please also refer on the dsps_uart1_bda.mp4 video as well. 
 
 Note: The implementation could change depending on the value of the USER_CFG_ADDRESS_MODE macro. Note2: If you want the Host MCU to be able to request the BDA from the DA14531 via a command, that would require a different implementation and it will need to reduce the Heap size more that could affect the performance of the SPS SDK.

OV_Renesas · Answer

Hi Laxmi, Thank you for the reply. Please refer here: DA14531 sending BD address after receiving certain command or custom string in serial port service - Bluetooth Low Energy - Wireless Connectivity - Renesas Engineering Community It will be hard to fully implement multiple AT commands as it is in CodeLess SDK but of course you can try it out on your side. Best Regards, OV_Renesas

OV_Renesas · Answer

Hi Laxmi, Thank you for the reply. Please keep in mind that the SPS SDK was not designed to have the UART enabled all the time. You can test this on your side. UART is initialized when we establish a connection, please refer on the user_on_connect callback function You can see that we call the dma_uart_on_connect function: 
void dma_uart_on_connect(void){
 dma_uart.tx_size = DEFAULT_TX_SIZE;
 if( app_default_sleep_mode == ARCH_SLEEP_OFF ){
 dma_uart_sps_init(cfg_uart_sps_baudrate, 3);
 dma_uart_rx_activate();
 dma_uart_assert_rts();
 } 
} You could try to remove the dma_uart_on_connect function from the user_on_connection callback and set it on app_on_init callback function. You should keep in mind that when we disconnect the UART will be disabled as well. Best Regards, OV_Renesas

OV_Renesas · Answer

Hi Laxmi, Thank you for the reply. Let me clarify: The DSPS SDK is supported with Extended Sleep enabled and 4-wire UART with Flow Control enabled when we have a BLE Connection. What you are trying to do has not been tested by us and is not supported. I would suggest you try with 4-Wire UART even when not connected. Even if you use the arch_set_sleep_mode API we constantly check the DA14531 state in user_sps_schedule_dma.c file. The Extended sleep mode will be enalbed by the user_on_ble_powered callback function as well. The RTS/CTS are also handled there that is why I suggest 4-Wire UART. I would suggest you try something similar to the following: uint8_t cmd_buffer_single_char[1]= {0};

uint8_t cmd_buffer_send_char[1]= {0};
void uart_rx_cb(uint16_t status)
{
	arch_set_sleep_mode(ARCH_SLEEP_OFF);
	
	for(int i=0; i < sizeof(cmd_buffer_single_char); i++)
	{
 uart_write_byte(UART1, cmd_buffer_single_char[i]);
	}

 uart_receive(UART1,cmd_buffer_single_char,4,UART_OP_INTR);
 
}



void enable_uart1()
{
	
 arch_set_sleep_mode(ARCH_SLEEP_OFF);
 //Configure UART pins for 2-Wire UART
 GPIO_ConfigurePin(gpio_uart1_tx.port, gpio_uart1_tx.pin, OUTPUT, PID_UART1_TX, false);
 GPIO_ConfigurePin(gpio_uart1_rx.port, gpio_uart1_rx.pin, INPUT_PULLUP, PID_UART1_RX, false);
 GPIO_ConfigurePin(gpio_uart1_rts.port, gpio_uart1_rts.pin, OUTPUT, PID_GPIO, true);
 GPIO_ConfigurePin(gpio_uart1_cts.port, gpio_uart1_cts.pin, INPUT_PULLUP, PID_UART1_CTSN, false);
	
 //Uart Configuration
 uart_cfg_t uart_cfg = {
 .uart_rx_cb = uart_rx_cb,
 .baud_rate = UART_BAUDRATE_921600,
 .data_bits = UART_DATABITS_8,
 .parity = UART_PARITY_NONE,
 .stop_bits = UART_STOPBITS_1,
 .auto_flow_control = UART_AFCE_EN,
 .use_fifo = UART_FIFO_EN,
 .tx_fifo_tr_lvl = UART_TX_FIFO_LEVEL_0,
 .rx_fifo_tr_lvl = UART_RX_FIFO_LEVEL_0,
 .intr_priority = 0,
 };

 
 uart_receive(UART1,cmd_buffer_single_char,1,UART_OP_INTR);
 uart_send(UART1, (uint8_t*) cmd_buffer_send_char, 1, UART_OP_BLOCKING);
 
 
	
}
void disable_uart1()
{
 uart_disable(UART1);
	
 //Reconfigure UART pins for 4-Wire UART 
 GPIO_ConfigurePin(gpio_uart1_tx.port, gpio_uart1_tx.pin, OUTPUT, PID_UART1_TX, false);
 GPIO_ConfigurePin(gpio_uart1_rx.port, gpio_uart1_rx.pin, INPUT_PULLUP, PID_UART1_RX, false);
 GPIO_ConfigurePin(gpio_uart1_rts.port, gpio_uart1_rts.pin, OUTPUT, PID_GPIO, true);
 GPIO_ConfigurePin(gpio_uart1_cts.port, gpio_uart1_cts.pin, INPUT_PULLUP, PID_UART1_CTSN, false);	
} Unfortunately, we cannot provide any further support as the SPS SDK is supported as given, with 4-Wire UART (when connected) and Extended Sleep mode on. Best Regards, OV_Renesas