Other Parts Discussed in Post:CC1310, CC1350, CC2640, CC2640R2F, CC2650

作者： TI 工程師 Fan Zhang

CC1310 是經(jīng)濟(jì)高效型、超低功耗無線 MCU 中低于 1GHz 系列的器件。CC1310 器件在支持多個(gè)物理層和 RF 標(biāo)準(zhǔn)的平臺(tái)中將靈活的超低功耗 RF 收發(fā)器和強(qiáng)大的 48MHz Cortex?-M3 微控制器相結(jié)合。專用無線控制器 (Cortex?-M0) 處理 ROM 或 RAM 中存儲(chǔ)的低層 RF 協(xié)議命令，從而確保超低功耗和靈活度。

針對(duì)不同的應(yīng)用需求，CC1310提供多種不同封裝，包括：7mm × 7mm RGZ VQFN48 封裝（30 個(gè)通用輸入/輸出 (GPIO)），5mm × 5mm RHB VQFN32 封裝（15 個(gè) GPIO），4mm × 4mm RSM VQFN32 封裝（10 個(gè) GPIO）。由于CC1310 Launchpad上使用的是7mm × 7mm封裝芯片，SDK中附帶的示例工程大多是基于7mm × 7mm封裝芯片編寫的。有些使用5mm × 5mm或4mm × 4mm封裝芯片的客戶，在CC1310 Launchpad上評(píng)估調(diào)試都沒問題，但是將代碼移植到自己的使用了5mm × 5mm或4mm × 4mm封裝芯片的板子上后，就出現(xiàn)這樣那樣的問題了。比如編譯報(bào)錯(cuò)說找不到變量聲明；代碼運(yùn)行效果與之前在Launchpad上不一樣；低功耗狀態(tài)功耗偏高等。其實(shí)，這些問題都是在代碼移植過程中的板級(jí)文件配置不正確導(dǎo)致的。

本文將以SDK（simplelink_cc13x0_sdk_2_20_00_38）中的pinInterrupt例程為例，介紹如何將這個(gè)例程從7mm × 7mm封裝芯片移植到使用5mm × 5mm封裝芯片的目標(biāo)板上。同時(shí)，這種移植方法，同樣也適用于TI SimpleLink 平臺(tái)下的其它芯片，包括：

CC1310、CC1312

CC1350、CC1352

CC2640、CC2640R2F、CC2642

CC2650、CC2652

一、從SDK中導(dǎo)入pinInterrupt例程，并在CC1310 Launchpad上進(jìn)行調(diào)試。

如下圖所示，從SDK中導(dǎo)入pinInterrupt例程，無需對(duì)導(dǎo)入的工程做任何修改，直接進(jìn)行編譯，然后下載到CC1310 Launchpad上。按Launchpad上的BTN-1，紅色LED狀態(tài)會(huì)翻轉(zhuǎn)（由亮變滅，或由滅變亮）；按Launchpad上的BTN-2，綠色LED狀態(tài)會(huì)翻轉(zhuǎn)。

二、修改板級(jí)文件，測(cè)得<1uA的standby電流。

1. Board.h

Board.h文件中都是“#define”宏定義，是否修改并不影響代碼在不同封裝芯片上的運(yùn)行，可以暫時(shí)不做修改。

2. CC1310_LAUNCHXL_fxns.c

從2.20版本SDK開始，示例代碼中將片外SPI Flash操作API從CC1310_LAUNCHXL.c文件移到了CC1310_LAUNCHXL_fxns.c文件中。使用2.20之前版本SDK的用戶可以在CC1310_LAUNCHXL.c中找到這幾個(gè)API。

如果目標(biāo)板上沒有使用片外SPI Flash，可以將這個(gè)幾個(gè)API的實(shí)現(xiàn)代碼直接屏蔽。選中需要屏蔽的代碼段，按下快捷鍵“Ctrl + /”即可對(duì)代碼段整體進(jìn)行屏蔽。

/*

* ======== CC1310_LAUNCHXL_sendExtFlashByte ========

*/

voidCC1310_LAUNCHXL_sendExtFlashByte(PIN_Handle pinHandle, uint8_t byte)

{

// uint8_t i;

//

// /* SPI Flash CS */

// PIN_setOutputValue(pinHandle, IOID_20, 0);

//

// for (i = 0; i < 8; i++) {

// PIN_setOutputValue(pinHandle, IOID_10, 0); /* SPI Flash CLK */

//

// /* SPI Flash MOSI */

// PIN_setOutputValue(pinHandle, IOID_9, (byte >> (7 - i)) & 0x01);

// PIN_setOutputValue(pinHandle, IOID_10, 1); /* SPI Flash CLK */

//

// /*

// * Waste a few cycles to keep the CLK high for at

// * least 45% of the period.

// * 3 cycles per loop: 8 loops @ 48 Mhz = 0.5 us.

// */

// CPUdelay(8);

// }

//

// PIN_setOutputValue(pinHandle, IOID_10, 0); /* CLK */

// PIN_setOutputValue(pinHandle, IOID_20, 1); /* CS */

//

// /*

// * Keep CS high at least 40 us

// * 3 cycles per loop: 700 loops @ 48 Mhz ~= 44 us

// */

// CPUdelay(700);

}

/*

* ======== CC1310_LAUNCHXL_wakeUpExtFlash ========

*/

voidCC1310_LAUNCHXL_wakeUpExtFlash(void)

{

// PIN_Config extFlashPinTable[] = {

// /* SPI Flash CS */

// IOID_20 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL |

// PIN_INPUT_DIS | PIN_DRVSTR_MED,

// PIN_TERMINATE

// };

// PIN_State extFlashPinState;

// PIN_Handle extFlashPinHandle = PIN_open(&extFlashPinState, extFlashPinTable);

//

// /*

// * To wake up we need to toggle the chip select at

// * least 20 ns and ten wait at least 35 us.

// */

//

// /* Toggle chip select for ~20ns to wake ext. flash */

// PIN_setOutputValue(extFlashPinHandle, IOID_20, 0);

// /* 3 cycles per loop: 1 loop @ 48 Mhz ~= 62 ns */

// CPUdelay(1);

// PIN_setOutputValue(extFlashPinHandle, IOID_20, 1);

// /* 3 cycles per loop: 560 loops @ 48 Mhz ~= 35 us */

// CPUdelay(560);

//

// PIN_close(extFlashPinHandle);

}

/*

* ======== CC1310_LAUNCHXL_shutDownExtFlash ========

*/

voidCC1310_LAUNCHXL_shutDownExtFlash(void)

{

// /*

// * To be sure we are putting the flash into sleep and not waking it,

// * we first have to make a wake up call

// */

// CC1310_LAUNCHXL_wakeUpExtFlash();

//

// PIN_Config extFlashPinTable[] = {

// /* SPI Flash CS*/

// IOID_20 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL |

// PIN_INPUT_DIS | PIN_DRVSTR_MED,

// /* SPI Flash CLK */

// IOID_10 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL |

// PIN_INPUT_DIS | PIN_DRVSTR_MED,

// /* SPI Flash MOSI */

// IOID_9 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL |

// PIN_INPUT_DIS | PIN_DRVSTR_MED,

// /* SPI Flash MISO */

// IOID_8 | PIN_INPUT_EN | PIN_PULLDOWN,

// PIN_TERMINATE

// };

// PIN_State extFlashPinState;

// PIN_Handle extFlashPinHandle = PIN_open(&extFlashPinState, extFlashPinTable);

//

// uint8_t extFlashShutdown = 0xB9;

//

// CC1310_LAUNCHXL_sendExtFlashByte(extFlashPinHandle, extFlashShutdown);

//

// PIN_close(extFlashPinHandle);

}

3. CC1310_LAUNCHXL_TIRTOS.cmd

通常，.cmd文件不需要進(jìn)行修改。如果你使用了包含較小Flash的CC1310芯片，則需要在.cmd文件中設(shè)置正確的FLASH_SIZE。

/* The starting address of the application. Normally the interrupt vectors */

/* must be located at the beginning of the application. */

#defineFLASH_BASE 0x0

#defineFLASH_SIZE 0x20000 // 0x20000 = 128k, 0x10000 = 64k

#defineRAM_BASE 0x20000000

#defineRAM_SIZE 0x5000

4. CC1310_LAUNCHXL.c

CC1310_LAUNCHXL.c中有很多關(guān)于各個(gè)片上外設(shè)的驅(qū)動(dòng)對(duì)應(yīng)的常量，我們可以先把沒有用到的外設(shè)對(duì)應(yīng)的定義部分先屏蔽掉，只保留pinInterrupt例程需要用到的PIN和Power模塊。

另外，我們?cè)谶@一階段只測(cè)量standby狀態(tài)工作電流，不進(jìn)行按鍵和LED操作，因此將PIN_Init也屏蔽掉。

/*

* ======== CC1310_LAUNCHXL_initGeneral ========

*/

voidCC1310_LAUNCHXL_initGeneral(void)

{

Power_init();

// if (PIN_init(BoardGpioInitTable) != PIN_SUCCESS) {

// /* Error with PIN_init */

// while (1);

// }

/* Perform board-specific initialization */

Board_initHook();

}

5. CC1310_LAUNCHXL.h

CC1310_LAUNCHXL.h文件是引腳分配和片上外設(shè)相關(guān)的enum變量定義。同樣，因?yàn)閑num變量定義是否修改并不影響代碼在不同封裝芯片上的運(yùn)行，可以暫時(shí)不做修改。

在CC1310_LAUNCHXL.h文件中，將所有引腳都設(shè)置成PIN_UNASSIGNED。

/* Mapping of pins to board signals using general board aliases

*

*/

/* Analog capable DIOs */

#defineCC1310_LAUNCHXL_DIO23_ANALOG PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO24_ANALOG PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO25_ANALOG PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO26_ANALOG PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO27_ANALOG PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO28_ANALOG PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO29_ANALOG PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO30_ANALOG PIN_UNASSIGNED

/* Digital IOs */

#defineCC1310_LAUNCHXL_DIO0 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO1 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO12 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO15 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO16_TDO PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO17_TDI PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO21 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_DIO22 PIN_UNASSIGNED

/* Discrete Inputs */

#defineCC1310_LAUNCHXL_PIN_BTN1 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_PIN_BTN2 PIN_UNASSIGNED

/* GPIO */

#defineCC1310_LAUNCHXL_GPIO_LED_ON 1

#defineCC1310_LAUNCHXL_GPIO_LED_OFF 0

/* I2C */

#defineCC1310_LAUNCHXL_I2C0_SCL0 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_I2C0_SDA0 PIN_UNASSIGNED

/* LEDs */

#defineCC1310_LAUNCHXL_PIN_LED_ON 1

#defineCC1310_LAUNCHXL_PIN_LED_OFF 0

#defineCC1310_LAUNCHXL_PIN_RLED PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_PIN_GLED PIN_UNASSIGNED

/* PWM Outputs */

#defineCC1310_LAUNCHXL_PWMPIN0 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_PWMPIN1 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_PWMPIN2 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_PWMPIN3 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_PWMPIN4 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_PWMPIN5 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_PWMPIN6 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_PWMPIN7 PIN_UNASSIGNED

/* SPI */

#defineCC1310_LAUNCHXL_SPI_FLASH_CS PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_FLASH_CS_ON 0

#defineCC1310_LAUNCHXL_FLASH_CS_OFF 1

/* SPI Board */

#defineCC1310_LAUNCHXL_SPI0_MISO PIN_UNASSIGNED /* RF1.20 */

#defineCC1310_LAUNCHXL_SPI0_MOSI PIN_UNASSIGNED /* RF1.18 */

#defineCC1310_LAUNCHXL_SPI0_CLK PIN_UNASSIGNED /* RF1.16 */

#defineCC1310_LAUNCHXL_SPI0_CSN PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_SPI1_MISO PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_SPI1_MOSI PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_SPI1_CLK PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_SPI1_CSN PIN_UNASSIGNED

/* UART Board */

#defineCC1310_LAUNCHXL_UART_RX PIN_UNASSIGNED /* RXD */

#defineCC1310_LAUNCHXL_UART_TX PIN_UNASSIGNED /* TXD */

#defineCC1310_LAUNCHXL_UART_CTS PIN_UNASSIGNED /* CTS */

#defineCC1310_LAUNCHXL_UART_RTS PIN_UNASSIGNED /* RTS */

6. pinInterrupt.c

因?yàn)槲覀儼阉械囊_都設(shè)置成了PIN_UNASSIGNED，所以在pinInterrupt.c文件中對(duì)引腳的操作會(huì)報(bào)錯(cuò)，我們先暫時(shí)將這些語句屏蔽掉。

/*

* Initial LED pin configuration table

* - LEDs Board_PIN_LED0 is on.

* - LEDs Board_PIN_LED1 is off.

*/

PIN_Config ledPinTable[] = {

// Board_PIN_LED0 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL | PIN_DRVSTR_MAX,

// Board_PIN_LED1 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,

PIN_TERMINATE

};

/*

* Application button pin configuration table:

* - Buttons interrupts are configured to trigger on falling edge.

*/

PIN_Config buttonPinTable[] = {

// Board_PIN_BUTTON0 | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_NEGEDGE,

// Board_PIN_BUTTON1 | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_NEGEDGE,

PIN_TERMINATE

};

/*

* ======== buttonCallbackFxn ========

* Pin interrupt Callback function board buttons configured in the pinTable.

* If Board_PIN_LED3 and Board_PIN_LED4 are defined, then we'll add them to the PIN

* callback function.

*/

voidbuttonCallbackFxn(PIN_Handle handle, PIN_Id pinId) {

// uint32_t currVal = 0;

//

// /* Debounce logic, only toggle if the button is still pushed (low) */

// CPUdelay(8000*50);

// if (!PIN_getInputValue(pinId)) {

// /* Toggle LED based on the button pressed */

// switch (pinId) {

// case Board_PIN_BUTTON0:

// currVal = PIN_getOutputValue(Board_PIN_LED0);

// PIN_setOutputValue(ledPinHandle, Board_PIN_LED0, !currVal);

// break;

//

// case Board_PIN_BUTTON1:

// currVal = PIN_getOutputValue(Board_PIN_LED1);

// PIN_setOutputValue(ledPinHandle, Board_PIN_LED1, !currVal);

// break;

//

// default:

// /* Do nothing */

// break;

// }

// }

}

/*

* ======== mainThread ========

*/

void*mainThread(void*arg0)

{

/* Open LED pins */

// ledPinHandle = PIN_open(&ledPinState, ledPinTable);

// if(!ledPinHandle) {

// /* Error initializing board LED pins */

// while(1);

// }

//

// buttonPinHandle = PIN_open(&buttonPinState, buttonPinTable);

// if(!buttonPinHandle) {

// /* Error initializing button pins */

// while(1);

// }

//

// /* Setup callback for button pins */

// if (PIN_registerIntCb(buttonPinHandle, &buttonCallbackFxn) != 0) {

// /* Error registering button callback function */

// while(1);

// }

/* Loop forever */

while(1) {

sleep(1000);

}

}

至此，所有代碼修改已經(jīng)完成，保存所有的源文件，重新編譯，然后下載到目標(biāo)板上。

代碼編譯結(jié)束時(shí)，會(huì)提示下面警告信息，提示聲明的變量沒有使用，確實(shí)是，但不用管它。

斷開JTAG連接，將萬用表串入電源與目標(biāo)板之間，就可以觀察到<1uA的工作電流，因?yàn)楝F(xiàn)在代碼絕大部分時(shí)間都是處于standby狀態(tài)。

三、按照目標(biāo)板硬件配置引腳分配。

在我們使用的目標(biāo)板上，有一個(gè)按鍵和一個(gè)LED。按鍵作為輸入連到CC1310的DIO11，然后使用DIO9輸出電平控制LED。針對(duì)這個(gè)配置，在按照上述步驟修改過的代碼上繼續(xù)進(jìn)行如下修改。

1. CC1310_LAUNCHXL.c

取消對(duì)PIN_init的 屏蔽。CCS中對(duì)某個(gè)代碼段進(jìn)行取消屏蔽操作的快捷鍵還是“Ctrl + /”。

/*

* ======== CC1310_LAUNCHXL_initGeneral ========

*/

voidCC1310_LAUNCHXL_initGeneral(void)

{

Power_init();

if(PIN_init(BoardGpioInitTable) != PIN_SUCCESS) {

/* Error with PIN_init */

while(1);

}

/* Perform board-specific initialization */

Board_initHook();

}

2. CC1310_LAUNCHXL.h

分別設(shè)置CC1310_LAUNCHXL_PIN_BTN1和CC1310_LAUNCHXL_PIN_RLED對(duì)應(yīng)的引腳，其他仍保持PIN_UNASSIGNED設(shè)置。

/* Discrete Inputs */

#defineCC1310_LAUNCHXL_PIN_BTN1 IOID_11

#defineCC1310_LAUNCHXL_PIN_BTN2 PIN_UNASSIGNED

/* GPIO */

#defineCC1310_LAUNCHXL_GPIO_LED_ON 1

#defineCC1310_LAUNCHXL_GPIO_LED_OFF 0

/* I2C */

#defineCC1310_LAUNCHXL_I2C0_SCL0 PIN_UNASSIGNED

#defineCC1310_LAUNCHXL_I2C0_SDA0 PIN_UNASSIGNED

/* LEDs */

#defineCC1310_LAUNCHXL_PIN_LED_ON 1

#defineCC1310_LAUNCHXL_PIN_LED_OFF 0

#defineCC1310_LAUNCHXL_PIN_RLED IOID_9

#defineCC1310_LAUNCHXL_PIN_GLED PIN_UNASSIGNED

3. pinInterrupt.c

取消對(duì)Board_PIN_LED0和Board_PIN_BUTTON0的屏蔽，取消對(duì)Board_PIN_BUTTON0的中斷處理部分的屏蔽，取消ledPinHandle和buttonPinHandle的初始化和中斷處理函數(shù)注冊(cè)的屏蔽。

/*

* Initial LED pin configuration table

* - LEDs Board_PIN_LED0 is on.

* - LEDs Board_PIN_LED1 is off.

*/

PIN_Config ledPinTable[] = {

Board_PIN_LED0 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL | PIN_DRVSTR_MAX,

// Board_PIN_LED1 | PIN_GPIO_OUTPUT_EN | PIN_GPIO_LOW | PIN_PUSHPULL | PIN_DRVSTR_MAX,

PIN_TERMINATE

};

/*

* Application button pin configuration table:

* - Buttons interrupts are configured to trigger on falling edge.

*/

PIN_Config buttonPinTable[] = {

Board_PIN_BUTTON0 | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_NEGEDGE,

// Board_PIN_BUTTON1 | PIN_INPUT_EN | PIN_PULLUP | PIN_IRQ_NEGEDGE,

PIN_TERMINATE

};

/*

* ======== buttonCallbackFxn ========

* Pin interrupt Callback function board buttons configured in the pinTable.

* If Board_PIN_LED3 and Board_PIN_LED4 are defined, then we'll add them to the PIN

* callback function.

*/

voidbuttonCallbackFxn(PIN_Handle handle, PIN_Id pinId) {

uint32_t currVal = 0;

/* Debounce logic, only toggle if the button is still pushed (low) */

CPUdelay(8000*50);

if(!PIN_getInputValue(pinId)) {

/* Toggle LED based on the button pressed */

switch(pinId) {

caseBoard_PIN_BUTTON0:

currVal =PIN_getOutputValue(Board_PIN_LED0);

PIN_setOutputValue(ledPinHandle, Board_PIN_LED0, !currVal);

break;

// case Board_PIN_BUTTON1:

// currVal = PIN_getOutputValue(Board_PIN_LED1);

// PIN_setOutputValue(ledPinHandle, Board_PIN_LED1, !currVal);

// break;

default:

/* Do nothing */

break;

}

}

}

/*

* ======== mainThread ========

*/

void*mainThread(void*arg0)

{

/* Open LED pins */

ledPinHandle =PIN_open(&ledPinState, ledPinTable);

if(!ledPinHandle) {

/* Error initializing board LED pins */

while(1);

}

buttonPinHandle =PIN_open(&buttonPinState, buttonPinTable);

if(!buttonPinHandle) {

/* Error initializing button pins */

while(1);

}

/* Setup callback for button pins */

if(PIN_registerIntCb(buttonPinHandle, &buttonCallbackFxn) != 0) {

/* Error registering button callback function */

while(1);

}

/* Loop forever */

while(1) {

sleep(1000);

}

}

至此，所有代碼修改已經(jīng)完成，保存所有的源文件，重新編譯，然后下載到目標(biāo)板上。

每按一次目標(biāo)板上的按鍵，LED的狀態(tài)會(huì)翻轉(zhuǎn)一次。

這樣，我們就成功的將SDK中基于7mm × 7mm封裝的pinInterrupt例程移植到了使用5mm × 5mm封裝的目標(biāo)板上。這個(gè)例程比較簡(jiǎn)單，只使用到了PIN 模塊。如果用戶需要使用更多片上外設(shè)，比如ADC，UART等，只需在CC1310_LAUNCHXL.c文件中取消對(duì)應(yīng)模塊代碼的屏蔽，并在CC1310_LAUNCHXL.h文件中，按照目標(biāo)板上的引腳關(guān)系，將對(duì)應(yīng)的引腳配置由PIN_UNASSIGNED修改為對(duì)應(yīng)的IO即可。

審核編輯：何安