From 9d87c925a9eaa4fc256be3173c14a20d1469472d Mon Sep 17 00:00:00 2001 From: fishsoupisgood Date: Wed, 9 Sep 2020 11:53:37 +0100 Subject: everything, mostly, working --- radiator-plc/stm32/app/pins.h | 53 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 radiator-plc/stm32/app/pins.h (limited to 'radiator-plc/stm32/app/pins.h') diff --git a/radiator-plc/stm32/app/pins.h b/radiator-plc/stm32/app/pins.h new file mode 100644 index 0000000..657cbf9 --- /dev/null +++ b/radiator-plc/stm32/app/pins.h @@ -0,0 +1,53 @@ +#ifndef _PINS_H_ +#define _PINS_H_ + +/* st seem to change these with every chip revision */ + +#define MAP_AF(a) do { \ + gpio_set_mode( a ## _PORT, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, a ); \ + } while (0) + +/* STM32F1 doesn't have AF pull up, but also doesn't disconnect af inputs so just use regular pull up */ +#define MAP_AF_PU(a) do { \ + gpio_set_mode( a ## _PORT, GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, a); \ + gpio_set( a ## _PORT, a); \ + } while (0) + +#define MAP_AF_OD(a) do { \ + gpio_set_mode( a ## _PORT, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_ALTFN_OPENDRAIN, a ); \ + } while (0) + + +#define MAP_OUTPUT_PP(a) do { \ + gpio_set_mode( a ## _PORT, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_PUSHPULL, a ); \ + } while (0) + + +#define MAP_OUTPUT_OD(a) do { \ + gpio_set_mode( a ## _PORT, GPIO_MODE_OUTPUT_50_MHZ, GPIO_CNF_OUTPUT_OPENDRAIN, a ); \ + } while (0) + +#define MAP_OUTPUT_OD_SLOW(a) do { \ + gpio_set_mode( a ## _PORT, GPIO_MODE_OUTPUT_2_MHZ, GPIO_CNF_OUTPUT_OPENDRAIN, a ); \ + } while (0) + + +/* STM32F1 madly uses the output register to drive the other end of the resistor, so pull up */ +/* requires us to write a 1 there */ + +#define MAP_INPUT_PU(a) do { \ + gpio_set_mode( a ## _PORT, GPIO_MODE_INPUT, GPIO_CNF_INPUT_PULL_UPDOWN, a); \ + gpio_set( a ## _PORT, a); \ + } while (0) + + +#define MAP_INPUT(a) do { \ + gpio_set_mode( a ## _PORT, GPIO_MODE_INPUT, GPIO_CNF_INPUT_FLOAT, a); \ + } while (0) + + +#define CLEAR(a) gpio_clear( a ## _PORT, a) +#define SET(a) gpio_set( a ## _PORT, a) +#define GET(a) gpio_get( a ## _PORT, a) + +#endif -- cgit v1.2.3