Sony's LANC camera control protocol project.
Dependencies: aconno_LANC aconno_bsp aconno_SEGGER_RTT
main.cpp
- Committer:
- jurica238814
- Date:
- 2017-10-30
- Revision:
- 1:3e3dded8192f
- Parent:
- 0:d616ca59aad8
- Child:
- 2:b28027b9c099
File content as of revision 1:3e3dded8192f:
/* * Example to demonstrate usage of the nrf52's I2S interface * * Made by Jurica Resetar @ aconno * jurica_resetar@yahoo.com * More info @ aconno.de * * All rights reserved * */ #include "mbed.h" #include "acd52832_bsp.h" #define MY_BUF_SIZE 13*8*2 #define LANC_H 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF /* 13 B */ #define LANC_H_L 0xAA, 0xAA, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xAA /* 13 B */ #define LANC_L 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /* 13 B */ /* * Bitovi na I2S bus idu od MSBa do LSBa */ #define REC_CMD_1 (0xE7) // 0xE7 or 0x18 #define REC_CMD_2 (0xCC) // 0xCC or 0x33 #define LANC_COMMAND_PIN (p26) // Pin connected to Tr to pull lanc bus down/up 2/26 #define LANC_PIN (p25) // Lanc bus pin (to scan for START/STOP bits) 3/25 DigitalOut led(p22); //uint8_t my_tx_buf[MY_BUF_SIZE] = {LANC_H,LANC_L,LANC_L,LANC_H, LANC_H,LANC_L,LANC_L,LANC_L, LANC_L,LANC_L,LANC_H,LANC_H,LANC_L,LANC_L,LANC_H,LANC_L}; //uint8_t my_tx_buf[MY_BUF_SIZE] = {LANC_H_L,LANC_H_L,LANC_H,LANC_L, LANC_H,LANC_L,LANC_H,LANC_L, LANC_H,LANC_L,LANC_H,LANC_L,LANC_H,LANC_L,LANC_L,LANC_H_L}; uint8_t my_tx_buf[4] __attribute__ ((aligned (32))) = {0x01, 0x00, 0x00, 0x90}; uint32_t *adrMyTxBuf = (uint32_t*)my_tx_buf; uint8_t empty_tx_buf[MY_BUF_SIZE] = {LANC_L,LANC_L,LANC_L,LANC_L, LANC_L,LANC_L,LANC_L,LANC_L, LANC_L,LANC_L,LANC_L,LANC_L, LANC_L,LANC_L,LANC_L,LANC_L}; uint8_t my_rx_buf[10] = {}; uint8_t flag = 0; InterruptIn button(LANC_PIN); void startLanc(){ NRF_I2S->EVENTS_TXPTRUPD = 0; NRF_I2S->ENABLE = 1; //NRF_I2S->TXD.PTR = (uint32_t)my_tx_buf; NRF_I2S->CONFIG.TXEN = 1; // Enable transmission NRF_I2S->TASKS_START = 1; //NRF_I2S->TXD.PTR = (uint32_t)my_tx_buf; flag = 1; } void sendCommand(void){ //lancTicker.attach_us(startLanc, 10); //startLanc(); NRF_I2S->EVENTS_TXPTRUPD = 0; NRF_I2S->ENABLE = 1; //NRF_I2S->TXD.PTR = (uint32_t)my_tx_buf; //NRF_I2S->CONFIG.TXEN = 1; // Enable transmission NRF_I2S->TASKS_START = 1; //NRF_I2S->TXD.PTR = (uint32_t)my_tx_buf; flag = 1; } int main(void){ led = 1; NRF_I2S->CONFIG.RXEN = 0; // Disable reception NRF_I2S->CONFIG.MCKEN = 1; // Enable MCK generator //NRF_I2S->CONFIG.MCKFREQ = 0x04100000; // DIV 63 //NRF_I2S->CONFIG.RATIO = 0; // Ratio = 32x NRF_I2S->CONFIG.MCKFREQ = 0x10000000; // DIV 31 NRF_I2S->CONFIG.RATIO = 0; // Ratio = 32x NRF_I2S->CONFIG.SWIDTH = 0; // Sample width = 8 bit NRF_I2S->CONFIG.ALIGN = 0; // Alignment = Right NRF_I2S->CONFIG.FORMAT = 0; // Format = I2S NRF_I2S->CONFIG.CHANNELS = 0; // Use stereo // In debug mode NRF_I2S->PSEL.LRCK = 27; // LRCK routed to pin 26 NRF_I2S->PSEL.SDOUT = LANC_COMMAND_PIN; // SDOUT routed to pin 28 NRF_I2S->PSEL.SCK = 30; // SCK routed to pin 30 NRF_I2S->PSEL.MCK = 0x80000000; // MCK disconnected NRF_I2S->PSEL.SDIN = 0x80000000; // SDIN disconnected NRF_I2S->TXD.PTR = (uint32_t)adrMyTxBuf; //NRF_I2S->RXTXD.MAXCNT = MY_BUF_SIZE/4; // Div with 4 cuz that's number of 32 bit words //NRF_I2S->RXTXD.MAXCNT = 52; NRF_I2S->RXTXD.MAXCNT = 1; //NRF_I2S->ENABLE = 1; //NRF_I2S->TASKS_START = 1; button.fall(sendCommand); while(1){ if(flag){ //NRF_I2S->TXD.PTR = (uint32_t)(my_tx_buf); led = 0; while(!NRF_I2S->EVENTS_TXPTRUPD); // Wait for the data to be send NRF_I2S->EVENTS_TXPTRUPD = 0; while(!NRF_I2S->EVENTS_TXPTRUPD); // Wait for the data to be send NRF_I2S->EVENTS_TXPTRUPD = 0; //NRF_I2S->TXD.PTR = (uint32_t)empty_tx_buf; //wait_us(2000); //NRF_I2S->TASKS_STOP = 1; //while(!NRF_I2S->EVENTS_STOPPED); //NRF_I2S->EVENTS_STOPPED = 0; NRF_I2S->ENABLE = 0; //NRF_I2S->TXD.PTR = (uint32_t)my_tx_buf; flag = 0; led = 1; } } }