Difference between revisions of "Nxp chip library routines"
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== Using Timers As Pulsewidth Modulators == | == Using Timers As Pulsewidth Modulators == | ||
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| + | Findings to go here later . . . | ||
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</pre> | </pre> | ||
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| + | Finding 3: | ||
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| + | <pre> | ||
| + | 1100 if(OUTPUT_IS_MILLIAMP)^M | ||
| + | 1101 {^M | ||
| + | 1102 // Here, calculate mA:^M | ||
| + | 1103 outputUnits = percentFsr * 16.0F; // 16.0 mA full scale^M | ||
| + | 1104 pwmDutyCycle = (^M | ||
| + | 1105 EEP_GetMaCalSlope() * outputUnits) + EEP_GetMaCalOffset();^M | ||
| + | 1106 Signal_APP_SetOutputCurrentDac(pwmDutyCycle);^M | ||
| + | 1107 }^M | ||
| + | 1108 else^M | ||
| + | 1109 {^M | ||
| + | 1110 // Here, calculate volt. Two ranges, 10V and 5V via DIP switch:^M | ||
| + | 1111 if(VOLT_RANGE_10V)^M | ||
| + | 1112 {^M | ||
| + | 1113 outputUnits = percentFsr * 10.0F; // 10.0 volts full scale^M | ||
| + | 1114 }^M | ||
| + | 1115 else^M | ||
| + | 1116 {^M | ||
| + | 1117 outputUnits = percentFsr * 5.0F; // 5.0 volts full scale^M | ||
| + | 1118 }^M | ||
| + | 1119 ^M | ||
| + | 1120 pwmDutyCycle = (^M | ||
| + | 1121 EEP_GetVoltCalSlope() * outputUnits) + EEP_GetVoltCalOffset();^M | ||
| + | 1122 Signal_APP_SetOutputVoltageDac(pwmDutyCycle);^M | ||
| + | 1123 }^M | ||
| + | </pre> | ||
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Revision as of 23:02, 26 October 2018
CMSIS Library Routines and Details,
LPC1xxx Board Routines
notes started 2018-10-25 THU
LPC11U14 board routines . . .
First search, looking for how NXP demo toggles a given GPIO:
user:~/Downloads/nxp/lpcopen$ grep -nr Board_LED_Toggle ./* ./nxp_lpcxpresso_11u14_board_lib/src/board.c:137:void Board_LED_Toggle(uint8_t LEDNumber) ./nxp_lpcxpresso_11u14_board_lib/inc/board_api.h:112:void Board_LED_Toggle(uint8_t LEDNumber); ./nxp_lpcxpresso_11u14_periph_clkout/example/src/clkout.c:77: Board_LED_Toggle(0); ./nxp_lpcxpresso_11u14_periph_pinint/example/src/pinint.c:187: Board_LED_Toggle(0); ./nxp_lpcxpresso_11u14_periph_uart/example/src/uart.c:135: Board_LED_Toggle(0);/* Toggle LED if the TX FIFO is full */ ./nxp_lpcxpresso_11u14_periph_watchdog/example/src/watchdog.c:65: Board_LED_Toggle(0); ./nxp_lpcxpresso_11u14_periph_watchdog/example/src/watchdog.c:72: Board_LED_Toggle(0);
The routine itself in file ~/Downloads/nxp/lpcopen/nxp_lpcxpresso_11u14_board_lib/src/board.c:
137 void Board_LED_Toggle(uint8_t LEDNumber)
138 {^M
139 if (LEDNumber == 0)^M
140 Chip_GPIO_SetPinToggle(LPC_GPIO, 0, 7);
141 }
Next search:
$ grep -nr Chip_GPIO_SetPinToggle ./* user:~/Downloads/nxp/lpcopen$ grep -nr Chip_GPIO_SetPinToggle ./* ./lpc_chip_11uxx_lib/inc/gpio_11xx_1.h:447:STATIC INLINE void Chip_GPIO_SetPinToggle(LPC_GPIO_T *pGPIO, uint8_t port, uint8_t pin) Binary file ./nxp_lpcxpresso_11u14_board_lib/src/.board.c.swp matches ./nxp_lpcxpresso_11u14_board_lib/src/board.c:140: Chip_GPIO_SetPinToggle(LPC_GPIO, 0, 7);
And the lower level routine itself in file ./lpc_chip_11uxx_lib/inc/gpio_11xx_1.h:
438 /**^M
439 * @brief Toggle an individual GPIO output pin to the opposite state^M
440 * @param pGPIO : The base of GPIO peripheral on the chip^M
441 * @param port : GPIO Port number where @a pin is located^M
442 * @param pin : pin number (0..n) to toggle^M
443 * @return None^M
444 * @note Any bit set as a '0' will not have it's state changed. This only^M
445 * applies to ports configured as an output.^M
446 */^M
447 STATIC INLINE void Chip_GPIO_SetPinToggle(LPC_GPIO_T *pGPIO, uint8_t port, uint8_t pin)^M
448 {^M
449 pGPIO->NOT[port] = (1 << pin);^M
450 }^M
So where is pGPIO defined?
^ LPC_GPIO_TYPEDEF
$ pwd .../Firmware/V1_1$ $ grep -nr LPC_GPIO_TypeDef ./* | grep LPC11 ./LPC11xx.h:295:} LPC_GPIO_TypeDef; ./LPC11xx.h:490:#define LPC_GPIO0 ((LPC_GPIO_TypeDef *) LPC_GPIO0_BASE ) ./LPC11xx.h:491:#define LPC_GPIO1 ((LPC_GPIO_TypeDef *) LPC_GPIO1_BASE ) ./LPC11xx.h:492:#define LPC_GPIO2 ((LPC_GPIO_TypeDef *) LPC_GPIO2_BASE ) ./LPC11xx.h:493:#define LPC_GPIO3 ((LPC_GPIO_TypeDef *) LPC_GPIO3_BASE ) Binary file ./Release/Obj/sysconfig_LPC11xx.pbi matches ./initial-firmware-works/Unit_Test/apptask/LPC11xx.h:192:} LPC_GPIO_TypeDef; ./initial-firmware-works/Unit_Test/apptask/LPC11xx.h:204:extern LPC_GPIO_TypeDef gpio; ./initial-firmware-works/Unit_Test/px3_system/LPC11xx.h:192:} LPC_GPIO_TypeDef; ./initial-firmware-works/Unit_Test/px3_system/LPC11xx.h:204:extern LPC_GPIO_TypeDef gpio; ./initial-firmware-works/FloatingPoint/LPC11xx.h:295:} LPC_GPIO_TypeDef; ./initial-firmware-works/FloatingPoint/LPC11xx.h:490:#define LPC_GPIO0 ((LPC_GPIO_TypeDef *) LPC_GPIO0_BASE ) ./initial-firmware-works/FloatingPoint/LPC11xx.h:491:#define LPC_GPIO1 ((LPC_GPIO_TypeDef *) LPC_GPIO1_BASE ) ./initial-firmware-works/FloatingPoint/LPC11xx.h:492:#define LPC_GPIO2 ((LPC_GPIO_TypeDef *) LPC_GPIO2_BASE ) ./initial-firmware-works/FloatingPoint/LPC11xx.h:493:#define LPC_GPIO3 ((LPC_GPIO_TypeDef *) LPC_GPIO3_BASE ) ./initial-firmware-works/Obsolete (FixedPoint)/LPC11xx.h:295:} LPC_GPIO_TypeDef; ./initial-firmware-works/Obsolete (FixedPoint)/LPC11xx.h:490:#define LPC_GPIO0 ((LPC_GPIO_TypeDef *) LPC_GPIO0_BASE ) ./initial-firmware-works/Obsolete (FixedPoint)/LPC11xx.h:491:#define LPC_GPIO1 ((LPC_GPIO_TypeDef *) LPC_GPIO1_BASE ) ./initial-firmware-works/Obsolete (FixedPoint)/LPC11xx.h:492:#define LPC_GPIO2 ((LPC_GPIO_TypeDef *) LPC_GPIO2_BASE ) ./initial-firmware-works/Obsolete (FixedPoint)/LPC11xx.h:493:#define LPC_GPIO3 ((LPC_GPIO_TypeDef *) LPC_GPIO3_BASE )
Using Timers As Pulsewidth Modulators
Findings to go here later . . .
